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| author | dwinter |
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| date | Tue, 04 Jan 2011 10:02:07 +0100 |
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<HTML> <BODY BGCOLOR="white"> <PRE> <FONT color="green">001</FONT> /*<a name="line.1"></a> <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a> <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> <FONT color="green">008</FONT> *<a name="line.8"></a> <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> <FONT color="green">010</FONT> *<a name="line.10"></a> <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> <FONT color="green">014</FONT> * See the License for the specific language governing permissions and<a name="line.14"></a> <FONT color="green">015</FONT> * limitations under the License.<a name="line.15"></a> <FONT color="green">016</FONT> */<a name="line.16"></a> <FONT color="green">017</FONT> package org.apache.commons.math.linear;<a name="line.17"></a> <FONT color="green">018</FONT> <a name="line.18"></a> <FONT color="green">019</FONT> import java.io.Serializable;<a name="line.19"></a> <FONT color="green">020</FONT> import java.util.Arrays;<a name="line.20"></a> <FONT color="green">021</FONT> import java.util.Iterator;<a name="line.21"></a> <FONT color="green">022</FONT> <a name="line.22"></a> <FONT color="green">023</FONT> import org.apache.commons.math.MathRuntimeException;<a name="line.23"></a> <FONT color="green">024</FONT> import org.apache.commons.math.util.MathUtils;<a name="line.24"></a> <FONT color="green">025</FONT> <a name="line.25"></a> <FONT color="green">026</FONT> /**<a name="line.26"></a> <FONT color="green">027</FONT> * This class implements the {@link RealVector} interface with a double array.<a name="line.27"></a> <FONT color="green">028</FONT> * @version $Revision: 902203 $ $Date: 2010-01-22 13:27:41 -0500 (Fri, 22 Jan 2010) $<a name="line.28"></a> <FONT color="green">029</FONT> * @since 2.0<a name="line.29"></a> <FONT color="green">030</FONT> */<a name="line.30"></a> <FONT color="green">031</FONT> public class ArrayRealVector extends AbstractRealVector implements Serializable {<a name="line.31"></a> <FONT color="green">032</FONT> <a name="line.32"></a> <FONT color="green">033</FONT> /** Message for non fitting position and size. */<a name="line.33"></a> <FONT color="green">034</FONT> private static final String NON_FITTING_POSITION_AND_SIZE_MESSAGE =<a name="line.34"></a> <FONT color="green">035</FONT> "position {0} and size {1} don't fit to the size of the input array {2}";<a name="line.35"></a> <FONT color="green">036</FONT> <a name="line.36"></a> <FONT color="green">037</FONT> /** Serializable version identifier. */<a name="line.37"></a> <FONT color="green">038</FONT> private static final long serialVersionUID = -1097961340710804027L;<a name="line.38"></a> <FONT color="green">039</FONT> <a name="line.39"></a> <FONT color="green">040</FONT> /** Default format. */<a name="line.40"></a> <FONT color="green">041</FONT> private static final RealVectorFormat DEFAULT_FORMAT =<a name="line.41"></a> <FONT color="green">042</FONT> RealVectorFormat.getInstance();<a name="line.42"></a> <FONT color="green">043</FONT> <a name="line.43"></a> <FONT color="green">044</FONT> /** Entries of the vector. */<a name="line.44"></a> <FONT color="green">045</FONT> protected double data[];<a name="line.45"></a> <FONT color="green">046</FONT> <a name="line.46"></a> <FONT color="green">047</FONT> /**<a name="line.47"></a> <FONT color="green">048</FONT> * Build a 0-length vector.<a name="line.48"></a> <FONT color="green">049</FONT> * <p>Zero-length vectors may be used to initialized construction of vectors<a name="line.49"></a> <FONT color="green">050</FONT> * by data gathering. We start with zero-length and use either the {@link<a name="line.50"></a> <FONT color="green">051</FONT> * #ArrayRealVector(ArrayRealVector, ArrayRealVector)} constructor<a name="line.51"></a> <FONT color="green">052</FONT> * or one of the <code>append</code> method ({@link #append(double)}, {@link<a name="line.52"></a> <FONT color="green">053</FONT> * #append(double[])}, {@link #append(ArrayRealVector)}) to gather data<a name="line.53"></a> <FONT color="green">054</FONT> * into this vector.</p><a name="line.54"></a> <FONT color="green">055</FONT> */<a name="line.55"></a> <FONT color="green">056</FONT> public ArrayRealVector() {<a name="line.56"></a> <FONT color="green">057</FONT> data = new double[0];<a name="line.57"></a> <FONT color="green">058</FONT> }<a name="line.58"></a> <FONT color="green">059</FONT> <a name="line.59"></a> <FONT color="green">060</FONT> /**<a name="line.60"></a> <FONT color="green">061</FONT> * Construct a (size)-length vector of zeros.<a name="line.61"></a> <FONT color="green">062</FONT> * @param size size of the vector<a name="line.62"></a> <FONT color="green">063</FONT> */<a name="line.63"></a> <FONT color="green">064</FONT> public ArrayRealVector(int size) {<a name="line.64"></a> <FONT color="green">065</FONT> data = new double[size];<a name="line.65"></a> <FONT color="green">066</FONT> }<a name="line.66"></a> <FONT color="green">067</FONT> <a name="line.67"></a> <FONT color="green">068</FONT> /**<a name="line.68"></a> <FONT color="green">069</FONT> * Construct an (size)-length vector with preset values.<a name="line.69"></a> <FONT color="green">070</FONT> * @param size size of the vector<a name="line.70"></a> <FONT color="green">071</FONT> * @param preset fill the vector with this scalar value<a name="line.71"></a> <FONT color="green">072</FONT> */<a name="line.72"></a> <FONT color="green">073</FONT> public ArrayRealVector(int size, double preset) {<a name="line.73"></a> <FONT color="green">074</FONT> data = new double[size];<a name="line.74"></a> <FONT color="green">075</FONT> Arrays.fill(data, preset);<a name="line.75"></a> <FONT color="green">076</FONT> }<a name="line.76"></a> <FONT color="green">077</FONT> <a name="line.77"></a> <FONT color="green">078</FONT> /**<a name="line.78"></a> <FONT color="green">079</FONT> * Construct a vector from an array, copying the input array.<a name="line.79"></a> <FONT color="green">080</FONT> * @param d array of doubles.<a name="line.80"></a> <FONT color="green">081</FONT> */<a name="line.81"></a> <FONT color="green">082</FONT> public ArrayRealVector(double[] d) {<a name="line.82"></a> <FONT color="green">083</FONT> data = d.clone();<a name="line.83"></a> <FONT color="green">084</FONT> }<a name="line.84"></a> <FONT color="green">085</FONT> <a name="line.85"></a> <FONT color="green">086</FONT> /**<a name="line.86"></a> <FONT color="green">087</FONT> * Create a new ArrayRealVector using the input array as the underlying<a name="line.87"></a> <FONT color="green">088</FONT> * data array.<a name="line.88"></a> <FONT color="green">089</FONT> * <p>If an array is built specially in order to be embedded in a<a name="line.89"></a> <FONT color="green">090</FONT> * ArrayRealVector and not used directly, the <code>copyArray</code> may be<a name="line.90"></a> <FONT color="green">091</FONT> * set to <code>false</code. This will prevent the copying and improve<a name="line.91"></a> <FONT color="green">092</FONT> * performance as no new array will be built and no data will be copied.</p><a name="line.92"></a> <FONT color="green">093</FONT> * @param d data for new vector<a name="line.93"></a> <FONT color="green">094</FONT> * @param copyArray if true, the input array will be copied, otherwise<a name="line.94"></a> <FONT color="green">095</FONT> * it will be referenced<a name="line.95"></a> <FONT color="green">096</FONT> * @throws IllegalArgumentException if <code>d</code> is empty<a name="line.96"></a> <FONT color="green">097</FONT> * @throws NullPointerException if <code>d</code> is null<a name="line.97"></a> <FONT color="green">098</FONT> * @see #ArrayRealVector(double[])<a name="line.98"></a> <FONT color="green">099</FONT> */<a name="line.99"></a> <FONT color="green">100</FONT> public ArrayRealVector(double[] d, boolean copyArray)<a name="line.100"></a> <FONT color="green">101</FONT> throws NullPointerException, IllegalArgumentException {<a name="line.101"></a> <FONT color="green">102</FONT> if (d == null) {<a name="line.102"></a> <FONT color="green">103</FONT> throw new NullPointerException();<a name="line.103"></a> <FONT color="green">104</FONT> }<a name="line.104"></a> <FONT color="green">105</FONT> if (d.length == 0) {<a name="line.105"></a> <FONT color="green">106</FONT> throw MathRuntimeException.createIllegalArgumentException("vector must have at least one element");<a name="line.106"></a> <FONT color="green">107</FONT> }<a name="line.107"></a> <FONT color="green">108</FONT> data = copyArray ? d.clone() : d;<a name="line.108"></a> <FONT color="green">109</FONT> }<a name="line.109"></a> <FONT color="green">110</FONT> <a name="line.110"></a> <FONT color="green">111</FONT> /**<a name="line.111"></a> <FONT color="green">112</FONT> * Construct a vector from part of a array.<a name="line.112"></a> <FONT color="green">113</FONT> * @param d array of doubles.<a name="line.113"></a> <FONT color="green">114</FONT> * @param pos position of first entry<a name="line.114"></a> <FONT color="green">115</FONT> * @param size number of entries to copy<a name="line.115"></a> <FONT color="green">116</FONT> */<a name="line.116"></a> <FONT color="green">117</FONT> public ArrayRealVector(double[] d, int pos, int size) {<a name="line.117"></a> <FONT color="green">118</FONT> if (d.length < pos + size) {<a name="line.118"></a> <FONT color="green">119</FONT> throw MathRuntimeException.createIllegalArgumentException(<a name="line.119"></a> <FONT color="green">120</FONT> NON_FITTING_POSITION_AND_SIZE_MESSAGE, pos, size, d.length);<a name="line.120"></a> <FONT color="green">121</FONT> }<a name="line.121"></a> <FONT color="green">122</FONT> data = new double[size];<a name="line.122"></a> <FONT color="green">123</FONT> System.arraycopy(d, pos, data, 0, size);<a name="line.123"></a> <FONT color="green">124</FONT> }<a name="line.124"></a> <FONT color="green">125</FONT> <a name="line.125"></a> <FONT color="green">126</FONT> /**<a name="line.126"></a> <FONT color="green">127</FONT> * Construct a vector from an array.<a name="line.127"></a> <FONT color="green">128</FONT> * @param d array of Doubles.<a name="line.128"></a> <FONT color="green">129</FONT> */<a name="line.129"></a> <FONT color="green">130</FONT> public ArrayRealVector(Double[] d) {<a name="line.130"></a> <FONT color="green">131</FONT> data = new double[d.length];<a name="line.131"></a> <FONT color="green">132</FONT> for (int i = 0; i < d.length; i++) {<a name="line.132"></a> <FONT color="green">133</FONT> data[i] = d[i].doubleValue();<a name="line.133"></a> <FONT color="green">134</FONT> }<a name="line.134"></a> <FONT color="green">135</FONT> }<a name="line.135"></a> <FONT color="green">136</FONT> <a name="line.136"></a> <FONT color="green">137</FONT> /**<a name="line.137"></a> <FONT color="green">138</FONT> * Construct a vector from part of a Double array<a name="line.138"></a> <FONT color="green">139</FONT> * @param d array of Doubles.<a name="line.139"></a> <FONT color="green">140</FONT> * @param pos position of first entry<a name="line.140"></a> <FONT color="green">141</FONT> * @param size number of entries to copy<a name="line.141"></a> <FONT color="green">142</FONT> */<a name="line.142"></a> <FONT color="green">143</FONT> public ArrayRealVector(Double[] d, int pos, int size) {<a name="line.143"></a> <FONT color="green">144</FONT> if (d.length < pos + size) {<a name="line.144"></a> <FONT color="green">145</FONT> throw MathRuntimeException.createIllegalArgumentException(<a name="line.145"></a> <FONT color="green">146</FONT> NON_FITTING_POSITION_AND_SIZE_MESSAGE, pos, size, d.length);<a name="line.146"></a> <FONT color="green">147</FONT> }<a name="line.147"></a> <FONT color="green">148</FONT> data = new double[size];<a name="line.148"></a> <FONT color="green">149</FONT> for (int i = pos; i < pos + size; i++) {<a name="line.149"></a> <FONT color="green">150</FONT> data[i-pos] = d[i].doubleValue();<a name="line.150"></a> <FONT color="green">151</FONT> }<a name="line.151"></a> <FONT color="green">152</FONT> }<a name="line.152"></a> <FONT color="green">153</FONT> <a name="line.153"></a> <FONT color="green">154</FONT> /**<a name="line.154"></a> <FONT color="green">155</FONT> * Construct a vector from another vector, using a deep copy.<a name="line.155"></a> <FONT color="green">156</FONT> * @param v vector to copy<a name="line.156"></a> <FONT color="green">157</FONT> */<a name="line.157"></a> <FONT color="green">158</FONT> public ArrayRealVector(RealVector v) {<a name="line.158"></a> <FONT color="green">159</FONT> data = new double[v.getDimension()];<a name="line.159"></a> <FONT color="green">160</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.160"></a> <FONT color="green">161</FONT> data[i] = v.getEntry(i);<a name="line.161"></a> <FONT color="green">162</FONT> }<a name="line.162"></a> <FONT color="green">163</FONT> }<a name="line.163"></a> <FONT color="green">164</FONT> <a name="line.164"></a> <FONT color="green">165</FONT> /**<a name="line.165"></a> <FONT color="green">166</FONT> * Construct a vector from another vector, using a deep copy.<a name="line.166"></a> <FONT color="green">167</FONT> * @param v vector to copy<a name="line.167"></a> <FONT color="green">168</FONT> */<a name="line.168"></a> <FONT color="green">169</FONT> public ArrayRealVector(ArrayRealVector v) {<a name="line.169"></a> <FONT color="green">170</FONT> this(v, true);<a name="line.170"></a> <FONT color="green">171</FONT> }<a name="line.171"></a> <FONT color="green">172</FONT> <a name="line.172"></a> <FONT color="green">173</FONT> /**<a name="line.173"></a> <FONT color="green">174</FONT> * Construct a vector from another vector.<a name="line.174"></a> <FONT color="green">175</FONT> * @param v vector to copy<a name="line.175"></a> <FONT color="green">176</FONT> * @param deep if true perform a deep copy otherwise perform a shallow copy<a name="line.176"></a> <FONT color="green">177</FONT> */<a name="line.177"></a> <FONT color="green">178</FONT> public ArrayRealVector(ArrayRealVector v, boolean deep) {<a name="line.178"></a> <FONT color="green">179</FONT> data = deep ? v.data.clone() : v.data;<a name="line.179"></a> <FONT color="green">180</FONT> }<a name="line.180"></a> <FONT color="green">181</FONT> <a name="line.181"></a> <FONT color="green">182</FONT> /**<a name="line.182"></a> <FONT color="green">183</FONT> * Construct a vector by appending one vector to another vector.<a name="line.183"></a> <FONT color="green">184</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.184"></a> <FONT color="green">185</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.185"></a> <FONT color="green">186</FONT> */<a name="line.186"></a> <FONT color="green">187</FONT> public ArrayRealVector(ArrayRealVector v1, ArrayRealVector v2) {<a name="line.187"></a> <FONT color="green">188</FONT> data = new double[v1.data.length + v2.data.length];<a name="line.188"></a> <FONT color="green">189</FONT> System.arraycopy(v1.data, 0, data, 0, v1.data.length);<a name="line.189"></a> <FONT color="green">190</FONT> System.arraycopy(v2.data, 0, data, v1.data.length, v2.data.length);<a name="line.190"></a> <FONT color="green">191</FONT> }<a name="line.191"></a> <FONT color="green">192</FONT> <a name="line.192"></a> <FONT color="green">193</FONT> /**<a name="line.193"></a> <FONT color="green">194</FONT> * Construct a vector by appending one vector to another vector.<a name="line.194"></a> <FONT color="green">195</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.195"></a> <FONT color="green">196</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.196"></a> <FONT color="green">197</FONT> */<a name="line.197"></a> <FONT color="green">198</FONT> public ArrayRealVector(ArrayRealVector v1, RealVector v2) {<a name="line.198"></a> <FONT color="green">199</FONT> final int l1 = v1.data.length;<a name="line.199"></a> <FONT color="green">200</FONT> final int l2 = v2.getDimension();<a name="line.200"></a> <FONT color="green">201</FONT> data = new double[l1 + l2];<a name="line.201"></a> <FONT color="green">202</FONT> System.arraycopy(v1.data, 0, data, 0, l1);<a name="line.202"></a> <FONT color="green">203</FONT> for (int i = 0; i < l2; ++i) {<a name="line.203"></a> <FONT color="green">204</FONT> data[l1 + i] = v2.getEntry(i);<a name="line.204"></a> <FONT color="green">205</FONT> }<a name="line.205"></a> <FONT color="green">206</FONT> }<a name="line.206"></a> <FONT color="green">207</FONT> <a name="line.207"></a> <FONT color="green">208</FONT> /**<a name="line.208"></a> <FONT color="green">209</FONT> * Construct a vector by appending one vector to another vector.<a name="line.209"></a> <FONT color="green">210</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.210"></a> <FONT color="green">211</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.211"></a> <FONT color="green">212</FONT> */<a name="line.212"></a> <FONT color="green">213</FONT> public ArrayRealVector(RealVector v1, ArrayRealVector v2) {<a name="line.213"></a> <FONT color="green">214</FONT> final int l1 = v1.getDimension();<a name="line.214"></a> <FONT color="green">215</FONT> final int l2 = v2.data.length;<a name="line.215"></a> <FONT color="green">216</FONT> data = new double[l1 + l2];<a name="line.216"></a> <FONT color="green">217</FONT> for (int i = 0; i < l1; ++i) {<a name="line.217"></a> <FONT color="green">218</FONT> data[i] = v1.getEntry(i);<a name="line.218"></a> <FONT color="green">219</FONT> }<a name="line.219"></a> <FONT color="green">220</FONT> System.arraycopy(v2.data, 0, data, l1, l2);<a name="line.220"></a> <FONT color="green">221</FONT> }<a name="line.221"></a> <FONT color="green">222</FONT> <a name="line.222"></a> <FONT color="green">223</FONT> /**<a name="line.223"></a> <FONT color="green">224</FONT> * Construct a vector by appending one vector to another vector.<a name="line.224"></a> <FONT color="green">225</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.225"></a> <FONT color="green">226</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.226"></a> <FONT color="green">227</FONT> */<a name="line.227"></a> <FONT color="green">228</FONT> public ArrayRealVector(ArrayRealVector v1, double[] v2) {<a name="line.228"></a> <FONT color="green">229</FONT> final int l1 = v1.getDimension();<a name="line.229"></a> <FONT color="green">230</FONT> final int l2 = v2.length;<a name="line.230"></a> <FONT color="green">231</FONT> data = new double[l1 + l2];<a name="line.231"></a> <FONT color="green">232</FONT> System.arraycopy(v1.data, 0, data, 0, l1);<a name="line.232"></a> <FONT color="green">233</FONT> System.arraycopy(v2, 0, data, l1, l2);<a name="line.233"></a> <FONT color="green">234</FONT> }<a name="line.234"></a> <FONT color="green">235</FONT> <a name="line.235"></a> <FONT color="green">236</FONT> /**<a name="line.236"></a> <FONT color="green">237</FONT> * Construct a vector by appending one vector to another vector.<a name="line.237"></a> <FONT color="green">238</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.238"></a> <FONT color="green">239</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.239"></a> <FONT color="green">240</FONT> */<a name="line.240"></a> <FONT color="green">241</FONT> public ArrayRealVector(double[] v1, ArrayRealVector v2) {<a name="line.241"></a> <FONT color="green">242</FONT> final int l1 = v1.length;<a name="line.242"></a> <FONT color="green">243</FONT> final int l2 = v2.getDimension();<a name="line.243"></a> <FONT color="green">244</FONT> data = new double[l1 + l2];<a name="line.244"></a> <FONT color="green">245</FONT> System.arraycopy(v1, 0, data, 0, l1);<a name="line.245"></a> <FONT color="green">246</FONT> System.arraycopy(v2.data, 0, data, l1, l2);<a name="line.246"></a> <FONT color="green">247</FONT> }<a name="line.247"></a> <FONT color="green">248</FONT> <a name="line.248"></a> <FONT color="green">249</FONT> /**<a name="line.249"></a> <FONT color="green">250</FONT> * Construct a vector by appending one vector to another vector.<a name="line.250"></a> <FONT color="green">251</FONT> * @param v1 first vector (will be put in front of the new vector)<a name="line.251"></a> <FONT color="green">252</FONT> * @param v2 second vector (will be put at back of the new vector)<a name="line.252"></a> <FONT color="green">253</FONT> */<a name="line.253"></a> <FONT color="green">254</FONT> public ArrayRealVector(double[] v1, double[] v2) {<a name="line.254"></a> <FONT color="green">255</FONT> final int l1 = v1.length;<a name="line.255"></a> <FONT color="green">256</FONT> final int l2 = v2.length;<a name="line.256"></a> <FONT color="green">257</FONT> data = new double[l1 + l2];<a name="line.257"></a> <FONT color="green">258</FONT> System.arraycopy(v1, 0, data, 0, l1);<a name="line.258"></a> <FONT color="green">259</FONT> System.arraycopy(v2, 0, data, l1, l2);<a name="line.259"></a> <FONT color="green">260</FONT> }<a name="line.260"></a> <FONT color="green">261</FONT> <a name="line.261"></a> <FONT color="green">262</FONT> /** {@inheritDoc} */<a name="line.262"></a> <FONT color="green">263</FONT> @Override<a name="line.263"></a> <FONT color="green">264</FONT> public AbstractRealVector copy() {<a name="line.264"></a> <FONT color="green">265</FONT> return new ArrayRealVector(this, true);<a name="line.265"></a> <FONT color="green">266</FONT> }<a name="line.266"></a> <FONT color="green">267</FONT> <a name="line.267"></a> <FONT color="green">268</FONT> /** {@inheritDoc} */<a name="line.268"></a> <FONT color="green">269</FONT> @Override<a name="line.269"></a> <FONT color="green">270</FONT> public RealVector add(RealVector v)<a name="line.270"></a> <FONT color="green">271</FONT> throws IllegalArgumentException {<a name="line.271"></a> <FONT color="green">272</FONT> if (v instanceof ArrayRealVector) {<a name="line.272"></a> <FONT color="green">273</FONT> return add((ArrayRealVector) v);<a name="line.273"></a> <FONT color="green">274</FONT> } else {<a name="line.274"></a> <FONT color="green">275</FONT> checkVectorDimensions(v);<a name="line.275"></a> <FONT color="green">276</FONT> double[] out = data.clone();<a name="line.276"></a> <FONT color="green">277</FONT> Iterator<Entry> it = v.sparseIterator();<a name="line.277"></a> <FONT color="green">278</FONT> Entry e;<a name="line.278"></a> <FONT color="green">279</FONT> while (it.hasNext() && (e = it.next()) != null) {<a name="line.279"></a> <FONT color="green">280</FONT> out[e.getIndex()] += e.getValue();<a name="line.280"></a> <FONT color="green">281</FONT> }<a name="line.281"></a> <FONT color="green">282</FONT> return new ArrayRealVector(out, false);<a name="line.282"></a> <FONT color="green">283</FONT> }<a name="line.283"></a> <FONT color="green">284</FONT> }<a name="line.284"></a> <FONT color="green">285</FONT> <a name="line.285"></a> <FONT color="green">286</FONT> /** {@inheritDoc} */<a name="line.286"></a> <FONT color="green">287</FONT> @Override<a name="line.287"></a> <FONT color="green">288</FONT> public RealVector add(double[] v)<a name="line.288"></a> <FONT color="green">289</FONT> throws IllegalArgumentException {<a name="line.289"></a> <FONT color="green">290</FONT> checkVectorDimensions(v.length);<a name="line.290"></a> <FONT color="green">291</FONT> double[] out = data.clone();<a name="line.291"></a> <FONT color="green">292</FONT> for (int i = 0; i < data.length; i++) {<a name="line.292"></a> <FONT color="green">293</FONT> out[i] += v[i];<a name="line.293"></a> <FONT color="green">294</FONT> }<a name="line.294"></a> <FONT color="green">295</FONT> return new ArrayRealVector(out, false);<a name="line.295"></a> <FONT color="green">296</FONT> }<a name="line.296"></a> <FONT color="green">297</FONT> <a name="line.297"></a> <FONT color="green">298</FONT> /**<a name="line.298"></a> <FONT color="green">299</FONT> * Compute the sum of this and v.<a name="line.299"></a> <FONT color="green">300</FONT> * @param v vector to be added<a name="line.300"></a> <FONT color="green">301</FONT> * @return this + v<a name="line.301"></a> <FONT color="green">302</FONT> * @throws IllegalArgumentException if v is not the same size as this<a name="line.302"></a> <FONT color="green">303</FONT> */<a name="line.303"></a> <FONT color="green">304</FONT> public ArrayRealVector add(ArrayRealVector v)<a name="line.304"></a> <FONT color="green">305</FONT> throws IllegalArgumentException {<a name="line.305"></a> <FONT color="green">306</FONT> return (ArrayRealVector) add(v.data);<a name="line.306"></a> <FONT color="green">307</FONT> }<a name="line.307"></a> <FONT color="green">308</FONT> <a name="line.308"></a> <FONT color="green">309</FONT> /** {@inheritDoc} */<a name="line.309"></a> <FONT color="green">310</FONT> @Override<a name="line.310"></a> <FONT color="green">311</FONT> public RealVector subtract(RealVector v)<a name="line.311"></a> <FONT color="green">312</FONT> throws IllegalArgumentException {<a name="line.312"></a> <FONT color="green">313</FONT> if (v instanceof ArrayRealVector) {<a name="line.313"></a> <FONT color="green">314</FONT> return subtract((ArrayRealVector) v);<a name="line.314"></a> <FONT color="green">315</FONT> } else {<a name="line.315"></a> <FONT color="green">316</FONT> checkVectorDimensions(v);<a name="line.316"></a> <FONT color="green">317</FONT> double[] out = data.clone();<a name="line.317"></a> <FONT color="green">318</FONT> Iterator<Entry> it = v.sparseIterator();<a name="line.318"></a> <FONT color="green">319</FONT> Entry e;<a name="line.319"></a> <FONT color="green">320</FONT> while(it.hasNext() && (e = it.next()) != null) {<a name="line.320"></a> <FONT color="green">321</FONT> out[e.getIndex()] -= e.getValue();<a name="line.321"></a> <FONT color="green">322</FONT> }<a name="line.322"></a> <FONT color="green">323</FONT> return new ArrayRealVector(out, false);<a name="line.323"></a> <FONT color="green">324</FONT> }<a name="line.324"></a> <FONT color="green">325</FONT> }<a name="line.325"></a> <FONT color="green">326</FONT> <a name="line.326"></a> <FONT color="green">327</FONT> /** {@inheritDoc} */<a name="line.327"></a> <FONT color="green">328</FONT> @Override<a name="line.328"></a> <FONT color="green">329</FONT> public RealVector subtract(double[] v)<a name="line.329"></a> <FONT color="green">330</FONT> throws IllegalArgumentException {<a name="line.330"></a> <FONT color="green">331</FONT> checkVectorDimensions(v.length);<a name="line.331"></a> <FONT color="green">332</FONT> double[] out = data.clone();<a name="line.332"></a> <FONT color="green">333</FONT> for (int i = 0; i < data.length; i++) {<a name="line.333"></a> <FONT color="green">334</FONT> out[i] -= v[i];<a name="line.334"></a> <FONT color="green">335</FONT> }<a name="line.335"></a> <FONT color="green">336</FONT> return new ArrayRealVector(out, false);<a name="line.336"></a> <FONT color="green">337</FONT> }<a name="line.337"></a> <FONT color="green">338</FONT> <a name="line.338"></a> <FONT color="green">339</FONT> /**<a name="line.339"></a> <FONT color="green">340</FONT> * Compute this minus v.<a name="line.340"></a> <FONT color="green">341</FONT> * @param v vector to be subtracted<a name="line.341"></a> <FONT color="green">342</FONT> * @return this + v<a name="line.342"></a> <FONT color="green">343</FONT> * @throws IllegalArgumentException if v is not the same size as this<a name="line.343"></a> <FONT color="green">344</FONT> */<a name="line.344"></a> <FONT color="green">345</FONT> public ArrayRealVector subtract(ArrayRealVector v)<a name="line.345"></a> <FONT color="green">346</FONT> throws IllegalArgumentException {<a name="line.346"></a> <FONT color="green">347</FONT> return (ArrayRealVector) subtract(v.data);<a name="line.347"></a> <FONT color="green">348</FONT> }<a name="line.348"></a> <FONT color="green">349</FONT> <a name="line.349"></a> <FONT color="green">350</FONT> /** {@inheritDoc} */<a name="line.350"></a> <FONT color="green">351</FONT> @Override<a name="line.351"></a> <FONT color="green">352</FONT> public RealVector mapAddToSelf(double d) {<a name="line.352"></a> <FONT color="green">353</FONT> for (int i = 0; i < data.length; i++) {<a name="line.353"></a> <FONT color="green">354</FONT> data[i] = data[i] + d;<a name="line.354"></a> <FONT color="green">355</FONT> }<a name="line.355"></a> <FONT color="green">356</FONT> return this;<a name="line.356"></a> <FONT color="green">357</FONT> }<a name="line.357"></a> <FONT color="green">358</FONT> <a name="line.358"></a> <FONT color="green">359</FONT> /** {@inheritDoc} */<a name="line.359"></a> <FONT color="green">360</FONT> @Override<a name="line.360"></a> <FONT color="green">361</FONT> public RealVector mapSubtractToSelf(double d) {<a name="line.361"></a> <FONT color="green">362</FONT> for (int i = 0; i < data.length; i++) {<a name="line.362"></a> <FONT color="green">363</FONT> data[i] = data[i] - d;<a name="line.363"></a> <FONT color="green">364</FONT> }<a name="line.364"></a> <FONT color="green">365</FONT> return this;<a name="line.365"></a> <FONT color="green">366</FONT> }<a name="line.366"></a> <FONT color="green">367</FONT> <a name="line.367"></a> <FONT color="green">368</FONT> /** {@inheritDoc} */<a name="line.368"></a> <FONT color="green">369</FONT> @Override<a name="line.369"></a> <FONT color="green">370</FONT> public RealVector mapMultiplyToSelf(double d) {<a name="line.370"></a> <FONT color="green">371</FONT> for (int i = 0; i < data.length; i++) {<a name="line.371"></a> <FONT color="green">372</FONT> data[i] = data[i] * d;<a name="line.372"></a> <FONT color="green">373</FONT> }<a name="line.373"></a> <FONT color="green">374</FONT> return this;<a name="line.374"></a> <FONT color="green">375</FONT> }<a name="line.375"></a> <FONT color="green">376</FONT> <a name="line.376"></a> <FONT color="green">377</FONT> /** {@inheritDoc} */<a name="line.377"></a> <FONT color="green">378</FONT> @Override<a name="line.378"></a> <FONT color="green">379</FONT> public RealVector mapDivideToSelf(double d) {<a name="line.379"></a> <FONT color="green">380</FONT> for (int i = 0; i < data.length; i++) {<a name="line.380"></a> <FONT color="green">381</FONT> data[i] = data[i] / d;<a name="line.381"></a> <FONT color="green">382</FONT> }<a name="line.382"></a> <FONT color="green">383</FONT> return this;<a name="line.383"></a> <FONT color="green">384</FONT> }<a name="line.384"></a> <FONT color="green">385</FONT> <a name="line.385"></a> <FONT color="green">386</FONT> /** {@inheritDoc} */<a name="line.386"></a> <FONT color="green">387</FONT> @Override<a name="line.387"></a> <FONT color="green">388</FONT> public RealVector mapPowToSelf(double d) {<a name="line.388"></a> <FONT color="green">389</FONT> for (int i = 0; i < data.length; i++) {<a name="line.389"></a> <FONT color="green">390</FONT> data[i] = Math.pow(data[i], d);<a name="line.390"></a> <FONT color="green">391</FONT> }<a name="line.391"></a> <FONT color="green">392</FONT> return this;<a name="line.392"></a> <FONT color="green">393</FONT> }<a name="line.393"></a> <FONT color="green">394</FONT> <a name="line.394"></a> <FONT color="green">395</FONT> /** {@inheritDoc} */<a name="line.395"></a> <FONT color="green">396</FONT> @Override<a name="line.396"></a> <FONT color="green">397</FONT> public RealVector mapExpToSelf() {<a name="line.397"></a> <FONT color="green">398</FONT> for (int i = 0; i < data.length; i++) {<a name="line.398"></a> <FONT color="green">399</FONT> data[i] = Math.exp(data[i]);<a name="line.399"></a> <FONT color="green">400</FONT> }<a name="line.400"></a> <FONT color="green">401</FONT> return this;<a name="line.401"></a> <FONT color="green">402</FONT> }<a name="line.402"></a> <FONT color="green">403</FONT> <a name="line.403"></a> <FONT color="green">404</FONT> /** {@inheritDoc} */<a name="line.404"></a> <FONT color="green">405</FONT> @Override<a name="line.405"></a> <FONT color="green">406</FONT> public RealVector mapExpm1ToSelf() {<a name="line.406"></a> <FONT color="green">407</FONT> for (int i = 0; i < data.length; i++) {<a name="line.407"></a> <FONT color="green">408</FONT> data[i] = Math.expm1(data[i]);<a name="line.408"></a> <FONT color="green">409</FONT> }<a name="line.409"></a> <FONT color="green">410</FONT> return this;<a name="line.410"></a> <FONT color="green">411</FONT> }<a name="line.411"></a> <FONT color="green">412</FONT> <a name="line.412"></a> <FONT color="green">413</FONT> /** {@inheritDoc} */<a name="line.413"></a> <FONT color="green">414</FONT> @Override<a name="line.414"></a> <FONT color="green">415</FONT> public RealVector mapLogToSelf() {<a name="line.415"></a> <FONT color="green">416</FONT> for (int i = 0; i < data.length; i++) {<a name="line.416"></a> <FONT color="green">417</FONT> data[i] = Math.log(data[i]);<a name="line.417"></a> <FONT color="green">418</FONT> }<a name="line.418"></a> <FONT color="green">419</FONT> return this;<a name="line.419"></a> <FONT color="green">420</FONT> }<a name="line.420"></a> <FONT color="green">421</FONT> <a name="line.421"></a> <FONT color="green">422</FONT> /** {@inheritDoc} */<a name="line.422"></a> <FONT color="green">423</FONT> @Override<a name="line.423"></a> <FONT color="green">424</FONT> public RealVector mapLog10ToSelf() {<a name="line.424"></a> <FONT color="green">425</FONT> for (int i = 0; i < data.length; i++) {<a name="line.425"></a> <FONT color="green">426</FONT> data[i] = Math.log10(data[i]);<a name="line.426"></a> <FONT color="green">427</FONT> }<a name="line.427"></a> <FONT color="green">428</FONT> return this;<a name="line.428"></a> <FONT color="green">429</FONT> }<a name="line.429"></a> <FONT color="green">430</FONT> <a name="line.430"></a> <FONT color="green">431</FONT> /** {@inheritDoc} */<a name="line.431"></a> <FONT color="green">432</FONT> @Override<a name="line.432"></a> <FONT color="green">433</FONT> public RealVector mapLog1pToSelf() {<a name="line.433"></a> <FONT color="green">434</FONT> for (int i = 0; i < data.length; i++) {<a name="line.434"></a> <FONT color="green">435</FONT> data[i] = Math.log1p(data[i]);<a name="line.435"></a> <FONT color="green">436</FONT> }<a name="line.436"></a> <FONT color="green">437</FONT> return this;<a name="line.437"></a> <FONT color="green">438</FONT> }<a name="line.438"></a> <FONT color="green">439</FONT> <a name="line.439"></a> <FONT color="green">440</FONT> /** {@inheritDoc} */<a name="line.440"></a> <FONT color="green">441</FONT> @Override<a name="line.441"></a> <FONT color="green">442</FONT> public RealVector mapCoshToSelf() {<a name="line.442"></a> <FONT color="green">443</FONT> for (int i = 0; i < data.length; i++) {<a name="line.443"></a> <FONT color="green">444</FONT> data[i] = Math.cosh(data[i]);<a name="line.444"></a> <FONT color="green">445</FONT> }<a name="line.445"></a> <FONT color="green">446</FONT> return this;<a name="line.446"></a> <FONT color="green">447</FONT> }<a name="line.447"></a> <FONT color="green">448</FONT> <a name="line.448"></a> <FONT color="green">449</FONT> /** {@inheritDoc} */<a name="line.449"></a> <FONT color="green">450</FONT> @Override<a name="line.450"></a> <FONT color="green">451</FONT> public RealVector mapSinhToSelf() {<a name="line.451"></a> <FONT color="green">452</FONT> for (int i = 0; i < data.length; i++) {<a name="line.452"></a> <FONT color="green">453</FONT> data[i] = Math.sinh(data[i]);<a name="line.453"></a> <FONT color="green">454</FONT> }<a name="line.454"></a> <FONT color="green">455</FONT> return this;<a name="line.455"></a> <FONT color="green">456</FONT> }<a name="line.456"></a> <FONT color="green">457</FONT> <a name="line.457"></a> <FONT color="green">458</FONT> /** {@inheritDoc} */<a name="line.458"></a> <FONT color="green">459</FONT> @Override<a name="line.459"></a> <FONT color="green">460</FONT> public RealVector mapTanhToSelf() {<a name="line.460"></a> <FONT color="green">461</FONT> for (int i = 0; i < data.length; i++) {<a name="line.461"></a> <FONT color="green">462</FONT> data[i] = Math.tanh(data[i]);<a name="line.462"></a> <FONT color="green">463</FONT> }<a name="line.463"></a> <FONT color="green">464</FONT> return this;<a name="line.464"></a> <FONT color="green">465</FONT> }<a name="line.465"></a> <FONT color="green">466</FONT> <a name="line.466"></a> <FONT color="green">467</FONT> /** {@inheritDoc} */<a name="line.467"></a> <FONT color="green">468</FONT> @Override<a name="line.468"></a> <FONT color="green">469</FONT> public RealVector mapCosToSelf() {<a name="line.469"></a> <FONT color="green">470</FONT> for (int i = 0; i < data.length; i++) {<a name="line.470"></a> <FONT color="green">471</FONT> data[i] = Math.cos(data[i]);<a name="line.471"></a> <FONT color="green">472</FONT> }<a name="line.472"></a> <FONT color="green">473</FONT> return this;<a name="line.473"></a> <FONT color="green">474</FONT> }<a name="line.474"></a> <FONT color="green">475</FONT> <a name="line.475"></a> <FONT color="green">476</FONT> /** {@inheritDoc} */<a name="line.476"></a> <FONT color="green">477</FONT> @Override<a name="line.477"></a> <FONT color="green">478</FONT> public RealVector mapSinToSelf() {<a name="line.478"></a> <FONT color="green">479</FONT> for (int i = 0; i < data.length; i++) {<a name="line.479"></a> <FONT color="green">480</FONT> data[i] = Math.sin(data[i]);<a name="line.480"></a> <FONT color="green">481</FONT> }<a name="line.481"></a> <FONT color="green">482</FONT> return this;<a name="line.482"></a> <FONT color="green">483</FONT> }<a name="line.483"></a> <FONT color="green">484</FONT> <a name="line.484"></a> <FONT color="green">485</FONT> /** {@inheritDoc} */<a name="line.485"></a> <FONT color="green">486</FONT> @Override<a name="line.486"></a> <FONT color="green">487</FONT> public RealVector mapTanToSelf() {<a name="line.487"></a> <FONT color="green">488</FONT> for (int i = 0; i < data.length; i++) {<a name="line.488"></a> <FONT color="green">489</FONT> data[i] = Math.tan(data[i]);<a name="line.489"></a> <FONT color="green">490</FONT> }<a name="line.490"></a> <FONT color="green">491</FONT> return this;<a name="line.491"></a> <FONT color="green">492</FONT> }<a name="line.492"></a> <FONT color="green">493</FONT> <a name="line.493"></a> <FONT color="green">494</FONT> /** {@inheritDoc} */<a name="line.494"></a> <FONT color="green">495</FONT> @Override<a name="line.495"></a> <FONT color="green">496</FONT> public RealVector mapAcosToSelf() {<a name="line.496"></a> <FONT color="green">497</FONT> for (int i = 0; i < data.length; i++) {<a name="line.497"></a> <FONT color="green">498</FONT> data[i] = Math.acos(data[i]);<a name="line.498"></a> <FONT color="green">499</FONT> }<a name="line.499"></a> <FONT color="green">500</FONT> return this;<a name="line.500"></a> <FONT color="green">501</FONT> }<a name="line.501"></a> <FONT color="green">502</FONT> <a name="line.502"></a> <FONT color="green">503</FONT> /** {@inheritDoc} */<a name="line.503"></a> <FONT color="green">504</FONT> @Override<a name="line.504"></a> <FONT color="green">505</FONT> public RealVector mapAsinToSelf() {<a name="line.505"></a> <FONT color="green">506</FONT> for (int i = 0; i < data.length; i++) {<a name="line.506"></a> <FONT color="green">507</FONT> data[i] = Math.asin(data[i]);<a name="line.507"></a> <FONT color="green">508</FONT> }<a name="line.508"></a> <FONT color="green">509</FONT> return this;<a name="line.509"></a> <FONT color="green">510</FONT> }<a name="line.510"></a> <FONT color="green">511</FONT> <a name="line.511"></a> <FONT color="green">512</FONT> /** {@inheritDoc} */<a name="line.512"></a> <FONT color="green">513</FONT> @Override<a name="line.513"></a> <FONT color="green">514</FONT> public RealVector mapAtanToSelf() {<a name="line.514"></a> <FONT color="green">515</FONT> for (int i = 0; i < data.length; i++) {<a name="line.515"></a> <FONT color="green">516</FONT> data[i] = Math.atan(data[i]);<a name="line.516"></a> <FONT color="green">517</FONT> }<a name="line.517"></a> <FONT color="green">518</FONT> return this;<a name="line.518"></a> <FONT color="green">519</FONT> }<a name="line.519"></a> <FONT color="green">520</FONT> <a name="line.520"></a> <FONT color="green">521</FONT> /** {@inheritDoc} */<a name="line.521"></a> <FONT color="green">522</FONT> @Override<a name="line.522"></a> <FONT color="green">523</FONT> public RealVector mapInvToSelf() {<a name="line.523"></a> <FONT color="green">524</FONT> for (int i = 0; i < data.length; i++) {<a name="line.524"></a> <FONT color="green">525</FONT> data[i] = 1.0 / data[i];<a name="line.525"></a> <FONT color="green">526</FONT> }<a name="line.526"></a> <FONT color="green">527</FONT> return this;<a name="line.527"></a> <FONT color="green">528</FONT> }<a name="line.528"></a> <FONT color="green">529</FONT> <a name="line.529"></a> <FONT color="green">530</FONT> /** {@inheritDoc} */<a name="line.530"></a> <FONT color="green">531</FONT> @Override<a name="line.531"></a> <FONT color="green">532</FONT> public RealVector mapAbsToSelf() {<a name="line.532"></a> <FONT color="green">533</FONT> for (int i = 0; i < data.length; i++) {<a name="line.533"></a> <FONT color="green">534</FONT> data[i] = Math.abs(data[i]);<a name="line.534"></a> <FONT color="green">535</FONT> }<a name="line.535"></a> <FONT color="green">536</FONT> return this;<a name="line.536"></a> <FONT color="green">537</FONT> }<a name="line.537"></a> <FONT color="green">538</FONT> <a name="line.538"></a> <FONT color="green">539</FONT> /** {@inheritDoc} */<a name="line.539"></a> <FONT color="green">540</FONT> @Override<a name="line.540"></a> <FONT color="green">541</FONT> public RealVector mapSqrtToSelf() {<a name="line.541"></a> <FONT color="green">542</FONT> for (int i = 0; i < data.length; i++) {<a name="line.542"></a> <FONT color="green">543</FONT> data[i] = Math.sqrt(data[i]);<a name="line.543"></a> <FONT color="green">544</FONT> }<a name="line.544"></a> <FONT color="green">545</FONT> return this;<a name="line.545"></a> <FONT color="green">546</FONT> }<a name="line.546"></a> <FONT color="green">547</FONT> <a name="line.547"></a> <FONT color="green">548</FONT> /** {@inheritDoc} */<a name="line.548"></a> <FONT color="green">549</FONT> @Override<a name="line.549"></a> <FONT color="green">550</FONT> public RealVector mapCbrtToSelf() {<a name="line.550"></a> <FONT color="green">551</FONT> for (int i = 0; i < data.length; i++) {<a name="line.551"></a> <FONT color="green">552</FONT> data[i] = Math.cbrt(data[i]);<a name="line.552"></a> <FONT color="green">553</FONT> }<a name="line.553"></a> <FONT color="green">554</FONT> return this;<a name="line.554"></a> <FONT color="green">555</FONT> }<a name="line.555"></a> <FONT color="green">556</FONT> <a name="line.556"></a> <FONT color="green">557</FONT> /** {@inheritDoc} */<a name="line.557"></a> <FONT color="green">558</FONT> @Override<a name="line.558"></a> <FONT color="green">559</FONT> public RealVector mapCeilToSelf() {<a name="line.559"></a> <FONT color="green">560</FONT> for (int i = 0; i < data.length; i++) {<a name="line.560"></a> <FONT color="green">561</FONT> data[i] = Math.ceil(data[i]);<a name="line.561"></a> <FONT color="green">562</FONT> }<a name="line.562"></a> <FONT color="green">563</FONT> return this;<a name="line.563"></a> <FONT color="green">564</FONT> }<a name="line.564"></a> <FONT color="green">565</FONT> <a name="line.565"></a> <FONT color="green">566</FONT> /** {@inheritDoc} */<a name="line.566"></a> <FONT color="green">567</FONT> @Override<a name="line.567"></a> <FONT color="green">568</FONT> public RealVector mapFloorToSelf() {<a name="line.568"></a> <FONT color="green">569</FONT> for (int i = 0; i < data.length; i++) {<a name="line.569"></a> <FONT color="green">570</FONT> data[i] = Math.floor(data[i]);<a name="line.570"></a> <FONT color="green">571</FONT> }<a name="line.571"></a> <FONT color="green">572</FONT> return this;<a name="line.572"></a> <FONT color="green">573</FONT> }<a name="line.573"></a> <FONT color="green">574</FONT> <a name="line.574"></a> <FONT color="green">575</FONT> /** {@inheritDoc} */<a name="line.575"></a> <FONT color="green">576</FONT> @Override<a name="line.576"></a> <FONT color="green">577</FONT> public RealVector mapRintToSelf() {<a name="line.577"></a> <FONT color="green">578</FONT> for (int i = 0; i < data.length; i++) {<a name="line.578"></a> <FONT color="green">579</FONT> data[i] = Math.rint(data[i]);<a name="line.579"></a> <FONT color="green">580</FONT> }<a name="line.580"></a> <FONT color="green">581</FONT> return this;<a name="line.581"></a> <FONT color="green">582</FONT> }<a name="line.582"></a> <FONT color="green">583</FONT> <a name="line.583"></a> <FONT color="green">584</FONT> /** {@inheritDoc} */<a name="line.584"></a> <FONT color="green">585</FONT> @Override<a name="line.585"></a> <FONT color="green">586</FONT> public RealVector mapSignumToSelf() {<a name="line.586"></a> <FONT color="green">587</FONT> for (int i = 0; i < data.length; i++) {<a name="line.587"></a> <FONT color="green">588</FONT> data[i] = Math.signum(data[i]);<a name="line.588"></a> <FONT color="green">589</FONT> }<a name="line.589"></a> <FONT color="green">590</FONT> return this;<a name="line.590"></a> <FONT color="green">591</FONT> }<a name="line.591"></a> <FONT color="green">592</FONT> <a name="line.592"></a> <FONT color="green">593</FONT> /** {@inheritDoc} */<a name="line.593"></a> <FONT color="green">594</FONT> @Override<a name="line.594"></a> <FONT color="green">595</FONT> public RealVector mapUlpToSelf() {<a name="line.595"></a> <FONT color="green">596</FONT> for (int i = 0; i < data.length; i++) {<a name="line.596"></a> <FONT color="green">597</FONT> data[i] = Math.ulp(data[i]);<a name="line.597"></a> <FONT color="green">598</FONT> }<a name="line.598"></a> <FONT color="green">599</FONT> return this;<a name="line.599"></a> <FONT color="green">600</FONT> }<a name="line.600"></a> <FONT color="green">601</FONT> <a name="line.601"></a> <FONT color="green">602</FONT> /** {@inheritDoc} */<a name="line.602"></a> <FONT color="green">603</FONT> public RealVector ebeMultiply(RealVector v)<a name="line.603"></a> <FONT color="green">604</FONT> throws IllegalArgumentException {<a name="line.604"></a> <FONT color="green">605</FONT> if (v instanceof ArrayRealVector) {<a name="line.605"></a> <FONT color="green">606</FONT> return ebeMultiply((ArrayRealVector) v);<a name="line.606"></a> <FONT color="green">607</FONT> } else {<a name="line.607"></a> <FONT color="green">608</FONT> checkVectorDimensions(v);<a name="line.608"></a> <FONT color="green">609</FONT> double[] out = data.clone();<a name="line.609"></a> <FONT color="green">610</FONT> for (int i = 0; i < data.length; i++) {<a name="line.610"></a> <FONT color="green">611</FONT> out[i] *= v.getEntry(i);<a name="line.611"></a> <FONT color="green">612</FONT> }<a name="line.612"></a> <FONT color="green">613</FONT> return new ArrayRealVector(out, false);<a name="line.613"></a> <FONT color="green">614</FONT> }<a name="line.614"></a> <FONT color="green">615</FONT> }<a name="line.615"></a> <FONT color="green">616</FONT> <a name="line.616"></a> <FONT color="green">617</FONT> /** {@inheritDoc} */<a name="line.617"></a> <FONT color="green">618</FONT> @Override<a name="line.618"></a> <FONT color="green">619</FONT> public RealVector ebeMultiply(double[] v)<a name="line.619"></a> <FONT color="green">620</FONT> throws IllegalArgumentException {<a name="line.620"></a> <FONT color="green">621</FONT> checkVectorDimensions(v.length);<a name="line.621"></a> <FONT color="green">622</FONT> double[] out = data.clone();<a name="line.622"></a> <FONT color="green">623</FONT> for (int i = 0; i < data.length; i++) {<a name="line.623"></a> <FONT color="green">624</FONT> out[i] *= v[i];<a name="line.624"></a> <FONT color="green">625</FONT> }<a name="line.625"></a> <FONT color="green">626</FONT> return new ArrayRealVector(out, false);<a name="line.626"></a> <FONT color="green">627</FONT> }<a name="line.627"></a> <FONT color="green">628</FONT> <a name="line.628"></a> <FONT color="green">629</FONT> /**<a name="line.629"></a> <FONT color="green">630</FONT> * Element-by-element multiplication.<a name="line.630"></a> <FONT color="green">631</FONT> * @param v vector by which instance elements must be multiplied<a name="line.631"></a> <FONT color="green">632</FONT> * @return a vector containing this[i] * v[i] for all i<a name="line.632"></a> <FONT color="green">633</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.633"></a> <FONT color="green">634</FONT> */<a name="line.634"></a> <FONT color="green">635</FONT> public ArrayRealVector ebeMultiply(ArrayRealVector v)<a name="line.635"></a> <FONT color="green">636</FONT> throws IllegalArgumentException {<a name="line.636"></a> <FONT color="green">637</FONT> return (ArrayRealVector) ebeMultiply(v.data);<a name="line.637"></a> <FONT color="green">638</FONT> }<a name="line.638"></a> <FONT color="green">639</FONT> <a name="line.639"></a> <FONT color="green">640</FONT> /** {@inheritDoc} */<a name="line.640"></a> <FONT color="green">641</FONT> public RealVector ebeDivide(RealVector v)<a name="line.641"></a> <FONT color="green">642</FONT> throws IllegalArgumentException {<a name="line.642"></a> <FONT color="green">643</FONT> if (v instanceof ArrayRealVector) {<a name="line.643"></a> <FONT color="green">644</FONT> return ebeDivide((ArrayRealVector) v);<a name="line.644"></a> <FONT color="green">645</FONT> } else {<a name="line.645"></a> <FONT color="green">646</FONT> checkVectorDimensions(v);<a name="line.646"></a> <FONT color="green">647</FONT> double[] out = data.clone();<a name="line.647"></a> <FONT color="green">648</FONT> for (int i = 0; i < data.length; i++) {<a name="line.648"></a> <FONT color="green">649</FONT> out[i] /= v.getEntry(i);<a name="line.649"></a> <FONT color="green">650</FONT> }<a name="line.650"></a> <FONT color="green">651</FONT> return new ArrayRealVector(out, false);<a name="line.651"></a> <FONT color="green">652</FONT> }<a name="line.652"></a> <FONT color="green">653</FONT> }<a name="line.653"></a> <FONT color="green">654</FONT> <a name="line.654"></a> <FONT color="green">655</FONT> /** {@inheritDoc} */<a name="line.655"></a> <FONT color="green">656</FONT> @Override<a name="line.656"></a> <FONT color="green">657</FONT> public RealVector ebeDivide(double[] v)<a name="line.657"></a> <FONT color="green">658</FONT> throws IllegalArgumentException {<a name="line.658"></a> <FONT color="green">659</FONT> checkVectorDimensions(v.length);<a name="line.659"></a> <FONT color="green">660</FONT> double[] out = data.clone();<a name="line.660"></a> <FONT color="green">661</FONT> for (int i = 0; i < data.length; i++) {<a name="line.661"></a> <FONT color="green">662</FONT> out[i] /= v[i];<a name="line.662"></a> <FONT color="green">663</FONT> }<a name="line.663"></a> <FONT color="green">664</FONT> return new ArrayRealVector(out, false);<a name="line.664"></a> <FONT color="green">665</FONT> }<a name="line.665"></a> <FONT color="green">666</FONT> <a name="line.666"></a> <FONT color="green">667</FONT> /**<a name="line.667"></a> <FONT color="green">668</FONT> * Element-by-element division.<a name="line.668"></a> <FONT color="green">669</FONT> * @param v vector by which instance elements must be divided<a name="line.669"></a> <FONT color="green">670</FONT> * @return a vector containing this[i] / v[i] for all i<a name="line.670"></a> <FONT color="green">671</FONT> * @throws IllegalArgumentException if v is not the same size as this<a name="line.671"></a> <FONT color="green">672</FONT> */<a name="line.672"></a> <FONT color="green">673</FONT> public ArrayRealVector ebeDivide(ArrayRealVector v)<a name="line.673"></a> <FONT color="green">674</FONT> throws IllegalArgumentException {<a name="line.674"></a> <FONT color="green">675</FONT> return (ArrayRealVector) ebeDivide(v.data);<a name="line.675"></a> <FONT color="green">676</FONT> }<a name="line.676"></a> <FONT color="green">677</FONT> <a name="line.677"></a> <FONT color="green">678</FONT> /** {@inheritDoc} */<a name="line.678"></a> <FONT color="green">679</FONT> @Override<a name="line.679"></a> <FONT color="green">680</FONT> public double[] getData() {<a name="line.680"></a> <FONT color="green">681</FONT> return data.clone();<a name="line.681"></a> <FONT color="green">682</FONT> }<a name="line.682"></a> <FONT color="green">683</FONT> <a name="line.683"></a> <FONT color="green">684</FONT> /**<a name="line.684"></a> <FONT color="green">685</FONT> * Returns a reference to the underlying data array.<a name="line.685"></a> <FONT color="green">686</FONT> * <p>Does not make a fresh copy of the underlying data.</p><a name="line.686"></a> <FONT color="green">687</FONT> * @return array of entries<a name="line.687"></a> <FONT color="green">688</FONT> */<a name="line.688"></a> <FONT color="green">689</FONT> public double[] getDataRef() {<a name="line.689"></a> <FONT color="green">690</FONT> return data;<a name="line.690"></a> <FONT color="green">691</FONT> }<a name="line.691"></a> <FONT color="green">692</FONT> <a name="line.692"></a> <FONT color="green">693</FONT> /** {@inheritDoc} */<a name="line.693"></a> <FONT color="green">694</FONT> @Override<a name="line.694"></a> <FONT color="green">695</FONT> public double dotProduct(RealVector v)<a name="line.695"></a> <FONT color="green">696</FONT> throws IllegalArgumentException {<a name="line.696"></a> <FONT color="green">697</FONT> if (v instanceof ArrayRealVector) {<a name="line.697"></a> <FONT color="green">698</FONT> return dotProduct((ArrayRealVector) v);<a name="line.698"></a> <FONT color="green">699</FONT> } else {<a name="line.699"></a> <FONT color="green">700</FONT> checkVectorDimensions(v);<a name="line.700"></a> <FONT color="green">701</FONT> double dot = 0;<a name="line.701"></a> <FONT color="green">702</FONT> Iterator<Entry> it = v.sparseIterator();<a name="line.702"></a> <FONT color="green">703</FONT> Entry e;<a name="line.703"></a> <FONT color="green">704</FONT> while(it.hasNext() && (e = it.next()) != null) {<a name="line.704"></a> <FONT color="green">705</FONT> dot += data[e.getIndex()] * e.getValue();<a name="line.705"></a> <FONT color="green">706</FONT> }<a name="line.706"></a> <FONT color="green">707</FONT> return dot;<a name="line.707"></a> <FONT color="green">708</FONT> }<a name="line.708"></a> <FONT color="green">709</FONT> }<a name="line.709"></a> <FONT color="green">710</FONT> <a name="line.710"></a> <FONT color="green">711</FONT> /** {@inheritDoc} */<a name="line.711"></a> <FONT color="green">712</FONT> @Override<a name="line.712"></a> <FONT color="green">713</FONT> public double dotProduct(double[] v)<a name="line.713"></a> <FONT color="green">714</FONT> throws IllegalArgumentException {<a name="line.714"></a> <FONT color="green">715</FONT> checkVectorDimensions(v.length);<a name="line.715"></a> <FONT color="green">716</FONT> double dot = 0;<a name="line.716"></a> <FONT color="green">717</FONT> for (int i = 0; i < data.length; i++) {<a name="line.717"></a> <FONT color="green">718</FONT> dot += data[i] * v[i];<a name="line.718"></a> <FONT color="green">719</FONT> }<a name="line.719"></a> <FONT color="green">720</FONT> return dot;<a name="line.720"></a> <FONT color="green">721</FONT> }<a name="line.721"></a> <FONT color="green">722</FONT> <a name="line.722"></a> <FONT color="green">723</FONT> /**<a name="line.723"></a> <FONT color="green">724</FONT> * Compute the dot product.<a name="line.724"></a> <FONT color="green">725</FONT> * @param v vector with which dot product should be computed<a name="line.725"></a> <FONT color="green">726</FONT> * @return the scalar dot product between instance and v<a name="line.726"></a> <FONT color="green">727</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.727"></a> <FONT color="green">728</FONT> */<a name="line.728"></a> <FONT color="green">729</FONT> public double dotProduct(ArrayRealVector v)<a name="line.729"></a> <FONT color="green">730</FONT> throws IllegalArgumentException {<a name="line.730"></a> <FONT color="green">731</FONT> return dotProduct(v.data);<a name="line.731"></a> <FONT color="green">732</FONT> }<a name="line.732"></a> <FONT color="green">733</FONT> <a name="line.733"></a> <FONT color="green">734</FONT> /** {@inheritDoc} */<a name="line.734"></a> <FONT color="green">735</FONT> @Override<a name="line.735"></a> <FONT color="green">736</FONT> public double getNorm() {<a name="line.736"></a> <FONT color="green">737</FONT> double sum = 0;<a name="line.737"></a> <FONT color="green">738</FONT> for (double a : data) {<a name="line.738"></a> <FONT color="green">739</FONT> sum += a * a;<a name="line.739"></a> <FONT color="green">740</FONT> }<a name="line.740"></a> <FONT color="green">741</FONT> return Math.sqrt(sum);<a name="line.741"></a> <FONT color="green">742</FONT> }<a name="line.742"></a> <FONT color="green">743</FONT> <a name="line.743"></a> <FONT color="green">744</FONT> /** {@inheritDoc} */<a name="line.744"></a> <FONT color="green">745</FONT> @Override<a name="line.745"></a> <FONT color="green">746</FONT> public double getL1Norm() {<a name="line.746"></a> <FONT color="green">747</FONT> double sum = 0;<a name="line.747"></a> <FONT color="green">748</FONT> for (double a : data) {<a name="line.748"></a> <FONT color="green">749</FONT> sum += Math.abs(a);<a name="line.749"></a> <FONT color="green">750</FONT> }<a name="line.750"></a> <FONT color="green">751</FONT> return sum;<a name="line.751"></a> <FONT color="green">752</FONT> }<a name="line.752"></a> <FONT color="green">753</FONT> <a name="line.753"></a> <FONT color="green">754</FONT> /** {@inheritDoc} */<a name="line.754"></a> <FONT color="green">755</FONT> @Override<a name="line.755"></a> <FONT color="green">756</FONT> public double getLInfNorm() {<a name="line.756"></a> <FONT color="green">757</FONT> double max = 0;<a name="line.757"></a> <FONT color="green">758</FONT> for (double a : data) {<a name="line.758"></a> <FONT color="green">759</FONT> max = Math.max(max, Math.abs(a));<a name="line.759"></a> <FONT color="green">760</FONT> }<a name="line.760"></a> <FONT color="green">761</FONT> return max;<a name="line.761"></a> <FONT color="green">762</FONT> }<a name="line.762"></a> <FONT color="green">763</FONT> <a name="line.763"></a> <FONT color="green">764</FONT> /** {@inheritDoc} */<a name="line.764"></a> <FONT color="green">765</FONT> @Override<a name="line.765"></a> <FONT color="green">766</FONT> public double getDistance(RealVector v)<a name="line.766"></a> <FONT color="green">767</FONT> throws IllegalArgumentException {<a name="line.767"></a> <FONT color="green">768</FONT> if (v instanceof ArrayRealVector) {<a name="line.768"></a> <FONT color="green">769</FONT> return getDistance((ArrayRealVector) v);<a name="line.769"></a> <FONT color="green">770</FONT> } else {<a name="line.770"></a> <FONT color="green">771</FONT> checkVectorDimensions(v);<a name="line.771"></a> <FONT color="green">772</FONT> double sum = 0;<a name="line.772"></a> <FONT color="green">773</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.773"></a> <FONT color="green">774</FONT> final double delta = data[i] - v.getEntry(i);<a name="line.774"></a> <FONT color="green">775</FONT> sum += delta * delta;<a name="line.775"></a> <FONT color="green">776</FONT> }<a name="line.776"></a> <FONT color="green">777</FONT> return Math.sqrt(sum);<a name="line.777"></a> <FONT color="green">778</FONT> }<a name="line.778"></a> <FONT color="green">779</FONT> }<a name="line.779"></a> <FONT color="green">780</FONT> <a name="line.780"></a> <FONT color="green">781</FONT> /** {@inheritDoc} */<a name="line.781"></a> <FONT color="green">782</FONT> @Override<a name="line.782"></a> <FONT color="green">783</FONT> public double getDistance(double[] v)<a name="line.783"></a> <FONT color="green">784</FONT> throws IllegalArgumentException {<a name="line.784"></a> <FONT color="green">785</FONT> checkVectorDimensions(v.length);<a name="line.785"></a> <FONT color="green">786</FONT> double sum = 0;<a name="line.786"></a> <FONT color="green">787</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.787"></a> <FONT color="green">788</FONT> final double delta = data[i] - v[i];<a name="line.788"></a> <FONT color="green">789</FONT> sum += delta * delta;<a name="line.789"></a> <FONT color="green">790</FONT> }<a name="line.790"></a> <FONT color="green">791</FONT> return Math.sqrt(sum);<a name="line.791"></a> <FONT color="green">792</FONT> }<a name="line.792"></a> <FONT color="green">793</FONT> <a name="line.793"></a> <FONT color="green">794</FONT> /**<a name="line.794"></a> <FONT color="green">795</FONT> * Distance between two vectors.<a name="line.795"></a> <FONT color="green">796</FONT> * <p>This method computes the distance consistent with the<a name="line.796"></a> <FONT color="green">797</FONT> * L<sub>2</sub> norm, i.e. the square root of the sum of<a name="line.797"></a> <FONT color="green">798</FONT> * elements differences, or euclidian distance.</p><a name="line.798"></a> <FONT color="green">799</FONT> * @param v vector to which distance is requested<a name="line.799"></a> <FONT color="green">800</FONT> * @return distance between two vectors.<a name="line.800"></a> <FONT color="green">801</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.801"></a> <FONT color="green">802</FONT> * @see #getDistance(RealVector)<a name="line.802"></a> <FONT color="green">803</FONT> * @see #getL1Distance(ArrayRealVector)<a name="line.803"></a> <FONT color="green">804</FONT> * @see #getLInfDistance(ArrayRealVector)<a name="line.804"></a> <FONT color="green">805</FONT> * @see #getNorm()<a name="line.805"></a> <FONT color="green">806</FONT> */<a name="line.806"></a> <FONT color="green">807</FONT> public double getDistance(ArrayRealVector v)<a name="line.807"></a> <FONT color="green">808</FONT> throws IllegalArgumentException {<a name="line.808"></a> <FONT color="green">809</FONT> return getDistance(v.data);<a name="line.809"></a> <FONT color="green">810</FONT> }<a name="line.810"></a> <FONT color="green">811</FONT> <a name="line.811"></a> <FONT color="green">812</FONT> /** {@inheritDoc} */<a name="line.812"></a> <FONT color="green">813</FONT> @Override<a name="line.813"></a> <FONT color="green">814</FONT> public double getL1Distance(RealVector v)<a name="line.814"></a> <FONT color="green">815</FONT> throws IllegalArgumentException {<a name="line.815"></a> <FONT color="green">816</FONT> if (v instanceof ArrayRealVector) {<a name="line.816"></a> <FONT color="green">817</FONT> return getL1Distance((ArrayRealVector) v);<a name="line.817"></a> <FONT color="green">818</FONT> } else {<a name="line.818"></a> <FONT color="green">819</FONT> checkVectorDimensions(v);<a name="line.819"></a> <FONT color="green">820</FONT> double sum = 0;<a name="line.820"></a> <FONT color="green">821</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.821"></a> <FONT color="green">822</FONT> final double delta = data[i] - v.getEntry(i);<a name="line.822"></a> <FONT color="green">823</FONT> sum += Math.abs(delta);<a name="line.823"></a> <FONT color="green">824</FONT> }<a name="line.824"></a> <FONT color="green">825</FONT> return sum;<a name="line.825"></a> <FONT color="green">826</FONT> }<a name="line.826"></a> <FONT color="green">827</FONT> }<a name="line.827"></a> <FONT color="green">828</FONT> <a name="line.828"></a> <FONT color="green">829</FONT> /** {@inheritDoc} */<a name="line.829"></a> <FONT color="green">830</FONT> @Override<a name="line.830"></a> <FONT color="green">831</FONT> public double getL1Distance(double[] v)<a name="line.831"></a> <FONT color="green">832</FONT> throws IllegalArgumentException {<a name="line.832"></a> <FONT color="green">833</FONT> checkVectorDimensions(v.length);<a name="line.833"></a> <FONT color="green">834</FONT> double sum = 0;<a name="line.834"></a> <FONT color="green">835</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.835"></a> <FONT color="green">836</FONT> final double delta = data[i] - v[i];<a name="line.836"></a> <FONT color="green">837</FONT> sum += Math.abs(delta);<a name="line.837"></a> <FONT color="green">838</FONT> }<a name="line.838"></a> <FONT color="green">839</FONT> return sum;<a name="line.839"></a> <FONT color="green">840</FONT> }<a name="line.840"></a> <FONT color="green">841</FONT> <a name="line.841"></a> <FONT color="green">842</FONT> /**<a name="line.842"></a> <FONT color="green">843</FONT> * Distance between two vectors.<a name="line.843"></a> <FONT color="green">844</FONT> * <p>This method computes the distance consistent with<a name="line.844"></a> <FONT color="green">845</FONT> * L<sub>1</sub> norm, i.e. the sum of the absolute values of<a name="line.845"></a> <FONT color="green">846</FONT> * elements differences.</p><a name="line.846"></a> <FONT color="green">847</FONT> * @param v vector to which distance is requested<a name="line.847"></a> <FONT color="green">848</FONT> * @return distance between two vectors.<a name="line.848"></a> <FONT color="green">849</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.849"></a> <FONT color="green">850</FONT> * @see #getDistance(RealVector)<a name="line.850"></a> <FONT color="green">851</FONT> * @see #getL1Distance(ArrayRealVector)<a name="line.851"></a> <FONT color="green">852</FONT> * @see #getLInfDistance(ArrayRealVector)<a name="line.852"></a> <FONT color="green">853</FONT> * @see #getNorm()<a name="line.853"></a> <FONT color="green">854</FONT> */<a name="line.854"></a> <FONT color="green">855</FONT> public double getL1Distance(ArrayRealVector v)<a name="line.855"></a> <FONT color="green">856</FONT> throws IllegalArgumentException {<a name="line.856"></a> <FONT color="green">857</FONT> return getL1Distance(v.data);<a name="line.857"></a> <FONT color="green">858</FONT> }<a name="line.858"></a> <FONT color="green">859</FONT> <a name="line.859"></a> <FONT color="green">860</FONT> /** {@inheritDoc} */<a name="line.860"></a> <FONT color="green">861</FONT> @Override<a name="line.861"></a> <FONT color="green">862</FONT> public double getLInfDistance(RealVector v)<a name="line.862"></a> <FONT color="green">863</FONT> throws IllegalArgumentException {<a name="line.863"></a> <FONT color="green">864</FONT> if (v instanceof ArrayRealVector) {<a name="line.864"></a> <FONT color="green">865</FONT> return getLInfDistance((ArrayRealVector) v);<a name="line.865"></a> <FONT color="green">866</FONT> } else {<a name="line.866"></a> <FONT color="green">867</FONT> checkVectorDimensions(v);<a name="line.867"></a> <FONT color="green">868</FONT> double max = 0;<a name="line.868"></a> <FONT color="green">869</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.869"></a> <FONT color="green">870</FONT> final double delta = data[i] - v.getEntry(i);<a name="line.870"></a> <FONT color="green">871</FONT> max = Math.max(max, Math.abs(delta));<a name="line.871"></a> <FONT color="green">872</FONT> }<a name="line.872"></a> <FONT color="green">873</FONT> return max;<a name="line.873"></a> <FONT color="green">874</FONT> }<a name="line.874"></a> <FONT color="green">875</FONT> }<a name="line.875"></a> <FONT color="green">876</FONT> <a name="line.876"></a> <FONT color="green">877</FONT> /** {@inheritDoc} */<a name="line.877"></a> <FONT color="green">878</FONT> @Override<a name="line.878"></a> <FONT color="green">879</FONT> public double getLInfDistance(double[] v)<a name="line.879"></a> <FONT color="green">880</FONT> throws IllegalArgumentException {<a name="line.880"></a> <FONT color="green">881</FONT> checkVectorDimensions(v.length);<a name="line.881"></a> <FONT color="green">882</FONT> double max = 0;<a name="line.882"></a> <FONT color="green">883</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.883"></a> <FONT color="green">884</FONT> final double delta = data[i] - v[i];<a name="line.884"></a> <FONT color="green">885</FONT> max = Math.max(max, Math.abs(delta));<a name="line.885"></a> <FONT color="green">886</FONT> }<a name="line.886"></a> <FONT color="green">887</FONT> return max;<a name="line.887"></a> <FONT color="green">888</FONT> }<a name="line.888"></a> <FONT color="green">889</FONT> <a name="line.889"></a> <FONT color="green">890</FONT> /**<a name="line.890"></a> <FONT color="green">891</FONT> * Distance between two vectors.<a name="line.891"></a> <FONT color="green">892</FONT> * <p>This method computes the distance consistent with<a name="line.892"></a> <FONT color="green">893</FONT> * L<sub>&infin;</sub> norm, i.e. the max of the absolute values of<a name="line.893"></a> <FONT color="green">894</FONT> * elements differences.</p><a name="line.894"></a> <FONT color="green">895</FONT> * @param v vector to which distance is requested<a name="line.895"></a> <FONT color="green">896</FONT> * @return distance between two vectors.<a name="line.896"></a> <FONT color="green">897</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.897"></a> <FONT color="green">898</FONT> * @see #getDistance(RealVector)<a name="line.898"></a> <FONT color="green">899</FONT> * @see #getL1Distance(ArrayRealVector)<a name="line.899"></a> <FONT color="green">900</FONT> * @see #getLInfDistance(ArrayRealVector)<a name="line.900"></a> <FONT color="green">901</FONT> * @see #getNorm()<a name="line.901"></a> <FONT color="green">902</FONT> */<a name="line.902"></a> <FONT color="green">903</FONT> public double getLInfDistance(ArrayRealVector v)<a name="line.903"></a> <FONT color="green">904</FONT> throws IllegalArgumentException {<a name="line.904"></a> <FONT color="green">905</FONT> return getLInfDistance(v.data);<a name="line.905"></a> <FONT color="green">906</FONT> }<a name="line.906"></a> <FONT color="green">907</FONT> <a name="line.907"></a> <FONT color="green">908</FONT> /** {@inheritDoc} */<a name="line.908"></a> <FONT color="green">909</FONT> @Override<a name="line.909"></a> <FONT color="green">910</FONT> public RealVector unitVector() throws ArithmeticException {<a name="line.910"></a> <FONT color="green">911</FONT> final double norm = getNorm();<a name="line.911"></a> <FONT color="green">912</FONT> if (norm == 0) {<a name="line.912"></a> <FONT color="green">913</FONT> throw MathRuntimeException.createArithmeticException("zero norm");<a name="line.913"></a> <FONT color="green">914</FONT> }<a name="line.914"></a> <FONT color="green">915</FONT> return mapDivide(norm);<a name="line.915"></a> <FONT color="green">916</FONT> }<a name="line.916"></a> <FONT color="green">917</FONT> <a name="line.917"></a> <FONT color="green">918</FONT> /** {@inheritDoc} */<a name="line.918"></a> <FONT color="green">919</FONT> @Override<a name="line.919"></a> <FONT color="green">920</FONT> public void unitize() throws ArithmeticException {<a name="line.920"></a> <FONT color="green">921</FONT> final double norm = getNorm();<a name="line.921"></a> <FONT color="green">922</FONT> if (norm == 0) {<a name="line.922"></a> <FONT color="green">923</FONT> throw MathRuntimeException.createArithmeticException("cannot normalize a zero norm vector");<a name="line.923"></a> <FONT color="green">924</FONT> }<a name="line.924"></a> <FONT color="green">925</FONT> mapDivideToSelf(norm);<a name="line.925"></a> <FONT color="green">926</FONT> }<a name="line.926"></a> <FONT color="green">927</FONT> <a name="line.927"></a> <FONT color="green">928</FONT> /** {@inheritDoc} */<a name="line.928"></a> <FONT color="green">929</FONT> public RealVector projection(RealVector v) {<a name="line.929"></a> <FONT color="green">930</FONT> return v.mapMultiply(dotProduct(v) / v.dotProduct(v));<a name="line.930"></a> <FONT color="green">931</FONT> }<a name="line.931"></a> <FONT color="green">932</FONT> <a name="line.932"></a> <FONT color="green">933</FONT> /** {@inheritDoc} */<a name="line.933"></a> <FONT color="green">934</FONT> @Override<a name="line.934"></a> <FONT color="green">935</FONT> public RealVector projection(double[] v) {<a name="line.935"></a> <FONT color="green">936</FONT> return projection(new ArrayRealVector(v, false));<a name="line.936"></a> <FONT color="green">937</FONT> }<a name="line.937"></a> <FONT color="green">938</FONT> <a name="line.938"></a> <FONT color="green">939</FONT> /** Find the orthogonal projection of this vector onto another vector.<a name="line.939"></a> <FONT color="green">940</FONT> * @param v vector onto which instance must be projected<a name="line.940"></a> <FONT color="green">941</FONT> * @return projection of the instance onto v<a name="line.941"></a> <FONT color="green">942</FONT> * @throws IllegalArgumentException if v is not the same size as this<a name="line.942"></a> <FONT color="green">943</FONT> */<a name="line.943"></a> <FONT color="green">944</FONT> public ArrayRealVector projection(ArrayRealVector v) {<a name="line.944"></a> <FONT color="green">945</FONT> return (ArrayRealVector) v.mapMultiply(dotProduct(v) / v.dotProduct(v));<a name="line.945"></a> <FONT color="green">946</FONT> }<a name="line.946"></a> <FONT color="green">947</FONT> <a name="line.947"></a> <FONT color="green">948</FONT> /** {@inheritDoc} */<a name="line.948"></a> <FONT color="green">949</FONT> @Override<a name="line.949"></a> <FONT color="green">950</FONT> public RealMatrix outerProduct(RealVector v)<a name="line.950"></a> <FONT color="green">951</FONT> throws IllegalArgumentException {<a name="line.951"></a> <FONT color="green">952</FONT> if (v instanceof ArrayRealVector) {<a name="line.952"></a> <FONT color="green">953</FONT> return outerProduct((ArrayRealVector) v);<a name="line.953"></a> <FONT color="green">954</FONT> } else {<a name="line.954"></a> <FONT color="green">955</FONT> checkVectorDimensions(v);<a name="line.955"></a> <FONT color="green">956</FONT> final int m = data.length;<a name="line.956"></a> <FONT color="green">957</FONT> final RealMatrix out = MatrixUtils.createRealMatrix(m, m);<a name="line.957"></a> <FONT color="green">958</FONT> for (int i = 0; i < data.length; i++) {<a name="line.958"></a> <FONT color="green">959</FONT> for (int j = 0; j < data.length; j++) {<a name="line.959"></a> <FONT color="green">960</FONT> out.setEntry(i, j, data[i] * v.getEntry(j));<a name="line.960"></a> <FONT color="green">961</FONT> }<a name="line.961"></a> <FONT color="green">962</FONT> }<a name="line.962"></a> <FONT color="green">963</FONT> return out;<a name="line.963"></a> <FONT color="green">964</FONT> }<a name="line.964"></a> <FONT color="green">965</FONT> }<a name="line.965"></a> <FONT color="green">966</FONT> <a name="line.966"></a> <FONT color="green">967</FONT> /**<a name="line.967"></a> <FONT color="green">968</FONT> * Compute the outer product.<a name="line.968"></a> <FONT color="green">969</FONT> * @param v vector with which outer product should be computed<a name="line.969"></a> <FONT color="green">970</FONT> * @return the square matrix outer product between instance and v<a name="line.970"></a> <FONT color="green">971</FONT> * @exception IllegalArgumentException if v is not the same size as this<a name="line.971"></a> <FONT color="green">972</FONT> */<a name="line.972"></a> <FONT color="green">973</FONT> public RealMatrix outerProduct(ArrayRealVector v)<a name="line.973"></a> <FONT color="green">974</FONT> throws IllegalArgumentException {<a name="line.974"></a> <FONT color="green">975</FONT> return outerProduct(v.data);<a name="line.975"></a> <FONT color="green">976</FONT> }<a name="line.976"></a> <FONT color="green">977</FONT> <a name="line.977"></a> <FONT color="green">978</FONT> /** {@inheritDoc} */<a name="line.978"></a> <FONT color="green">979</FONT> @Override<a name="line.979"></a> <FONT color="green">980</FONT> public RealMatrix outerProduct(double[] v)<a name="line.980"></a> <FONT color="green">981</FONT> throws IllegalArgumentException {<a name="line.981"></a> <FONT color="green">982</FONT> checkVectorDimensions(v.length);<a name="line.982"></a> <FONT color="green">983</FONT> final int m = data.length;<a name="line.983"></a> <FONT color="green">984</FONT> final RealMatrix out = MatrixUtils.createRealMatrix(m, m);<a name="line.984"></a> <FONT color="green">985</FONT> for (int i = 0; i < data.length; i++) {<a name="line.985"></a> <FONT color="green">986</FONT> for (int j = 0; j < data.length; j++) {<a name="line.986"></a> <FONT color="green">987</FONT> out.setEntry(i, j, data[i] * v[j]);<a name="line.987"></a> <FONT color="green">988</FONT> }<a name="line.988"></a> <FONT color="green">989</FONT> }<a name="line.989"></a> <FONT color="green">990</FONT> return out;<a name="line.990"></a> <FONT color="green">991</FONT> }<a name="line.991"></a> <FONT color="green">992</FONT> <a name="line.992"></a> <FONT color="green">993</FONT> /** {@inheritDoc} */<a name="line.993"></a> <FONT color="green">994</FONT> public double getEntry(int index) throws MatrixIndexException {<a name="line.994"></a> <FONT color="green">995</FONT> return data[index];<a name="line.995"></a> <FONT color="green">996</FONT> }<a name="line.996"></a> <FONT color="green">997</FONT> <a name="line.997"></a> <FONT color="green">998</FONT> /** {@inheritDoc} */<a name="line.998"></a> <FONT color="green">999</FONT> public int getDimension() {<a name="line.999"></a> <FONT color="green">1000</FONT> return data.length;<a name="line.1000"></a> <FONT color="green">1001</FONT> }<a name="line.1001"></a> <FONT color="green">1002</FONT> <a name="line.1002"></a> <FONT color="green">1003</FONT> /** {@inheritDoc} */<a name="line.1003"></a> <FONT color="green">1004</FONT> public RealVector append(RealVector v) {<a name="line.1004"></a> <FONT color="green">1005</FONT> try {<a name="line.1005"></a> <FONT color="green">1006</FONT> return new ArrayRealVector(this, (ArrayRealVector) v);<a name="line.1006"></a> <FONT color="green">1007</FONT> } catch (ClassCastException cce) {<a name="line.1007"></a> <FONT color="green">1008</FONT> return new ArrayRealVector(this, v);<a name="line.1008"></a> <FONT color="green">1009</FONT> }<a name="line.1009"></a> <FONT color="green">1010</FONT> }<a name="line.1010"></a> <FONT color="green">1011</FONT> <a name="line.1011"></a> <FONT color="green">1012</FONT> /**<a name="line.1012"></a> <FONT color="green">1013</FONT> * Construct a vector by appending a vector to this vector.<a name="line.1013"></a> <FONT color="green">1014</FONT> * @param v vector to append to this one.<a name="line.1014"></a> <FONT color="green">1015</FONT> * @return a new vector<a name="line.1015"></a> <FONT color="green">1016</FONT> */<a name="line.1016"></a> <FONT color="green">1017</FONT> public ArrayRealVector append(ArrayRealVector v) {<a name="line.1017"></a> <FONT color="green">1018</FONT> return new ArrayRealVector(this, v);<a name="line.1018"></a> <FONT color="green">1019</FONT> }<a name="line.1019"></a> <FONT color="green">1020</FONT> <a name="line.1020"></a> <FONT color="green">1021</FONT> /** {@inheritDoc} */<a name="line.1021"></a> <FONT color="green">1022</FONT> public RealVector append(double in) {<a name="line.1022"></a> <FONT color="green">1023</FONT> final double[] out = new double[data.length + 1];<a name="line.1023"></a> <FONT color="green">1024</FONT> System.arraycopy(data, 0, out, 0, data.length);<a name="line.1024"></a> <FONT color="green">1025</FONT> out[data.length] = in;<a name="line.1025"></a> <FONT color="green">1026</FONT> return new ArrayRealVector(out, false);<a name="line.1026"></a> <FONT color="green">1027</FONT> }<a name="line.1027"></a> <FONT color="green">1028</FONT> <a name="line.1028"></a> <FONT color="green">1029</FONT> /** {@inheritDoc} */<a name="line.1029"></a> <FONT color="green">1030</FONT> public RealVector append(double[] in) {<a name="line.1030"></a> <FONT color="green">1031</FONT> return new ArrayRealVector(this, in);<a name="line.1031"></a> <FONT color="green">1032</FONT> }<a name="line.1032"></a> <FONT color="green">1033</FONT> <a name="line.1033"></a> <FONT color="green">1034</FONT> /** {@inheritDoc} */<a name="line.1034"></a> <FONT color="green">1035</FONT> public RealVector getSubVector(int index, int n) {<a name="line.1035"></a> <FONT color="green">1036</FONT> ArrayRealVector out = new ArrayRealVector(n);<a name="line.1036"></a> <FONT color="green">1037</FONT> try {<a name="line.1037"></a> <FONT color="green">1038</FONT> System.arraycopy(data, index, out.data, 0, n);<a name="line.1038"></a> <FONT color="green">1039</FONT> } catch (IndexOutOfBoundsException e) {<a name="line.1039"></a> <FONT color="green">1040</FONT> checkIndex(index);<a name="line.1040"></a> <FONT color="green">1041</FONT> checkIndex(index + n - 1);<a name="line.1041"></a> <FONT color="green">1042</FONT> }<a name="line.1042"></a> <FONT color="green">1043</FONT> return out;<a name="line.1043"></a> <FONT color="green">1044</FONT> }<a name="line.1044"></a> <FONT color="green">1045</FONT> <a name="line.1045"></a> <FONT color="green">1046</FONT> /** {@inheritDoc} */<a name="line.1046"></a> <FONT color="green">1047</FONT> public void setEntry(int index, double value) {<a name="line.1047"></a> <FONT color="green">1048</FONT> try {<a name="line.1048"></a> <FONT color="green">1049</FONT> data[index] = value;<a name="line.1049"></a> <FONT color="green">1050</FONT> } catch (IndexOutOfBoundsException e) {<a name="line.1050"></a> <FONT color="green">1051</FONT> checkIndex(index);<a name="line.1051"></a> <FONT color="green">1052</FONT> }<a name="line.1052"></a> <FONT color="green">1053</FONT> }<a name="line.1053"></a> <FONT color="green">1054</FONT> <a name="line.1054"></a> <FONT color="green">1055</FONT> /** {@inheritDoc} */<a name="line.1055"></a> <FONT color="green">1056</FONT> @Override<a name="line.1056"></a> <FONT color="green">1057</FONT> public void setSubVector(int index, RealVector v) {<a name="line.1057"></a> <FONT color="green">1058</FONT> try {<a name="line.1058"></a> <FONT color="green">1059</FONT> try {<a name="line.1059"></a> <FONT color="green">1060</FONT> set(index, (ArrayRealVector) v);<a name="line.1060"></a> <FONT color="green">1061</FONT> } catch (ClassCastException cce) {<a name="line.1061"></a> <FONT color="green">1062</FONT> for (int i = index; i < index + v.getDimension(); ++i) {<a name="line.1062"></a> <FONT color="green">1063</FONT> data[i] = v.getEntry(i-index);<a name="line.1063"></a> <FONT color="green">1064</FONT> }<a name="line.1064"></a> <FONT color="green">1065</FONT> }<a name="line.1065"></a> <FONT color="green">1066</FONT> } catch (IndexOutOfBoundsException e) {<a name="line.1066"></a> <FONT color="green">1067</FONT> checkIndex(index);<a name="line.1067"></a> <FONT color="green">1068</FONT> checkIndex(index + v.getDimension() - 1);<a name="line.1068"></a> <FONT color="green">1069</FONT> }<a name="line.1069"></a> <FONT color="green">1070</FONT> }<a name="line.1070"></a> <FONT color="green">1071</FONT> <a name="line.1071"></a> <FONT color="green">1072</FONT> /** {@inheritDoc} */<a name="line.1072"></a> <FONT color="green">1073</FONT> @Override<a name="line.1073"></a> <FONT color="green">1074</FONT> public void setSubVector(int index, double[] v) {<a name="line.1074"></a> <FONT color="green">1075</FONT> try {<a name="line.1075"></a> <FONT color="green">1076</FONT> System.arraycopy(v, 0, data, index, v.length);<a name="line.1076"></a> <FONT color="green">1077</FONT> } catch (IndexOutOfBoundsException e) {<a name="line.1077"></a> <FONT color="green">1078</FONT> checkIndex(index);<a name="line.1078"></a> <FONT color="green">1079</FONT> checkIndex(index + v.length - 1);<a name="line.1079"></a> <FONT color="green">1080</FONT> }<a name="line.1080"></a> <FONT color="green">1081</FONT> }<a name="line.1081"></a> <FONT color="green">1082</FONT> <a name="line.1082"></a> <FONT color="green">1083</FONT> /**<a name="line.1083"></a> <FONT color="green">1084</FONT> * Set a set of consecutive elements.<a name="line.1084"></a> <FONT color="green">1085</FONT> *<a name="line.1085"></a> <FONT color="green">1086</FONT> * @param index index of first element to be set.<a name="line.1086"></a> <FONT color="green">1087</FONT> * @param v vector containing the values to set.<a name="line.1087"></a> <FONT color="green">1088</FONT> * @exception MatrixIndexException if the index is<a name="line.1088"></a> <FONT color="green">1089</FONT> * inconsistent with vector size<a name="line.1089"></a> <FONT color="green">1090</FONT> */<a name="line.1090"></a> <FONT color="green">1091</FONT> public void set(int index, ArrayRealVector v)<a name="line.1091"></a> <FONT color="green">1092</FONT> throws MatrixIndexException {<a name="line.1092"></a> <FONT color="green">1093</FONT> setSubVector(index, v.data);<a name="line.1093"></a> <FONT color="green">1094</FONT> }<a name="line.1094"></a> <FONT color="green">1095</FONT> <a name="line.1095"></a> <FONT color="green">1096</FONT> /** {@inheritDoc} */<a name="line.1096"></a> <FONT color="green">1097</FONT> @Override<a name="line.1097"></a> <FONT color="green">1098</FONT> public void set(double value) {<a name="line.1098"></a> <FONT color="green">1099</FONT> Arrays.fill(data, value);<a name="line.1099"></a> <FONT color="green">1100</FONT> }<a name="line.1100"></a> <FONT color="green">1101</FONT> <a name="line.1101"></a> <FONT color="green">1102</FONT> /** {@inheritDoc} */<a name="line.1102"></a> <FONT color="green">1103</FONT> @Override<a name="line.1103"></a> <FONT color="green">1104</FONT> public double[] toArray(){<a name="line.1104"></a> <FONT color="green">1105</FONT> return data.clone();<a name="line.1105"></a> <FONT color="green">1106</FONT> }<a name="line.1106"></a> <FONT color="green">1107</FONT> <a name="line.1107"></a> <FONT color="green">1108</FONT> /** {@inheritDoc} */<a name="line.1108"></a> <FONT color="green">1109</FONT> @Override<a name="line.1109"></a> <FONT color="green">1110</FONT> public String toString(){<a name="line.1110"></a> <FONT color="green">1111</FONT> return DEFAULT_FORMAT.format(this);<a name="line.1111"></a> <FONT color="green">1112</FONT> }<a name="line.1112"></a> <FONT color="green">1113</FONT> <a name="line.1113"></a> <FONT color="green">1114</FONT> /**<a name="line.1114"></a> <FONT color="green">1115</FONT> * Check if instance and specified vectors have the same dimension.<a name="line.1115"></a> <FONT color="green">1116</FONT> * @param v vector to compare instance with<a name="line.1116"></a> <FONT color="green">1117</FONT> * @exception IllegalArgumentException if the vectors do not<a name="line.1117"></a> <FONT color="green">1118</FONT> * have the same dimension<a name="line.1118"></a> <FONT color="green">1119</FONT> */<a name="line.1119"></a> <FONT color="green">1120</FONT> @Override<a name="line.1120"></a> <FONT color="green">1121</FONT> protected void checkVectorDimensions(RealVector v)<a name="line.1121"></a> <FONT color="green">1122</FONT> throws IllegalArgumentException {<a name="line.1122"></a> <FONT color="green">1123</FONT> checkVectorDimensions(v.getDimension());<a name="line.1123"></a> <FONT color="green">1124</FONT> }<a name="line.1124"></a> <FONT color="green">1125</FONT> <a name="line.1125"></a> <FONT color="green">1126</FONT> /**<a name="line.1126"></a> <FONT color="green">1127</FONT> * Check if instance dimension is equal to some expected value.<a name="line.1127"></a> <FONT color="green">1128</FONT> *<a name="line.1128"></a> <FONT color="green">1129</FONT> * @param n expected dimension.<a name="line.1129"></a> <FONT color="green">1130</FONT> * @exception IllegalArgumentException if the dimension is<a name="line.1130"></a> <FONT color="green">1131</FONT> * inconsistent with vector size<a name="line.1131"></a> <FONT color="green">1132</FONT> */<a name="line.1132"></a> <FONT color="green">1133</FONT> @Override<a name="line.1133"></a> <FONT color="green">1134</FONT> protected void checkVectorDimensions(int n)<a name="line.1134"></a> <FONT color="green">1135</FONT> throws IllegalArgumentException {<a name="line.1135"></a> <FONT color="green">1136</FONT> if (data.length != n) {<a name="line.1136"></a> <FONT color="green">1137</FONT> throw MathRuntimeException.createIllegalArgumentException(<a name="line.1137"></a> <FONT color="green">1138</FONT> "vector length mismatch: got {0} but expected {1}",<a name="line.1138"></a> <FONT color="green">1139</FONT> data.length, n);<a name="line.1139"></a> <FONT color="green">1140</FONT> }<a name="line.1140"></a> <FONT color="green">1141</FONT> }<a name="line.1141"></a> <FONT color="green">1142</FONT> <a name="line.1142"></a> <FONT color="green">1143</FONT> /**<a name="line.1143"></a> <FONT color="green">1144</FONT> * Returns true if any coordinate of this vector is NaN; false otherwise<a name="line.1144"></a> <FONT color="green">1145</FONT> * @return true if any coordinate of this vector is NaN; false otherwise<a name="line.1145"></a> <FONT color="green">1146</FONT> */<a name="line.1146"></a> <FONT color="green">1147</FONT> public boolean isNaN() {<a name="line.1147"></a> <FONT color="green">1148</FONT> for (double v : data) {<a name="line.1148"></a> <FONT color="green">1149</FONT> if (Double.isNaN(v)) {<a name="line.1149"></a> <FONT color="green">1150</FONT> return true;<a name="line.1150"></a> <FONT color="green">1151</FONT> }<a name="line.1151"></a> <FONT color="green">1152</FONT> }<a name="line.1152"></a> <FONT color="green">1153</FONT> return false;<a name="line.1153"></a> <FONT color="green">1154</FONT> }<a name="line.1154"></a> <FONT color="green">1155</FONT> <a name="line.1155"></a> <FONT color="green">1156</FONT> /**<a name="line.1156"></a> <FONT color="green">1157</FONT> * Returns true if any coordinate of this vector is infinite and none are NaN;<a name="line.1157"></a> <FONT color="green">1158</FONT> * false otherwise<a name="line.1158"></a> <FONT color="green">1159</FONT> * @return true if any coordinate of this vector is infinite and none are NaN;<a name="line.1159"></a> <FONT color="green">1160</FONT> * false otherwise<a name="line.1160"></a> <FONT color="green">1161</FONT> */<a name="line.1161"></a> <FONT color="green">1162</FONT> public boolean isInfinite() {<a name="line.1162"></a> <FONT color="green">1163</FONT> <a name="line.1163"></a> <FONT color="green">1164</FONT> if (isNaN()) {<a name="line.1164"></a> <FONT color="green">1165</FONT> return false;<a name="line.1165"></a> <FONT color="green">1166</FONT> }<a name="line.1166"></a> <FONT color="green">1167</FONT> <a name="line.1167"></a> <FONT color="green">1168</FONT> for (double v : data) {<a name="line.1168"></a> <FONT color="green">1169</FONT> if (Double.isInfinite(v)) {<a name="line.1169"></a> <FONT color="green">1170</FONT> return true;<a name="line.1170"></a> <FONT color="green">1171</FONT> }<a name="line.1171"></a> <FONT color="green">1172</FONT> }<a name="line.1172"></a> <FONT color="green">1173</FONT> <a name="line.1173"></a> <FONT color="green">1174</FONT> return false;<a name="line.1174"></a> <FONT color="green">1175</FONT> <a name="line.1175"></a> <FONT color="green">1176</FONT> }<a name="line.1176"></a> <FONT color="green">1177</FONT> <a name="line.1177"></a> <FONT color="green">1178</FONT> /**<a name="line.1178"></a> <FONT color="green">1179</FONT> * Test for the equality of two real vectors.<a name="line.1179"></a> <FONT color="green">1180</FONT> * <p><a name="line.1180"></a> <FONT color="green">1181</FONT> * If all coordinates of two real vectors are exactly the same, and none are<a name="line.1181"></a> <FONT color="green">1182</FONT> * <code>Double.NaN</code>, the two real vectors are considered to be equal.<a name="line.1182"></a> <FONT color="green">1183</FONT> * </p><a name="line.1183"></a> <FONT color="green">1184</FONT> * <p><a name="line.1184"></a> <FONT color="green">1185</FONT> * <code>NaN</code> coordinates are considered to affect globally the vector<a name="line.1185"></a> <FONT color="green">1186</FONT> * and be equals to each other - i.e, if either (or all) coordinates of the<a name="line.1186"></a> <FONT color="green">1187</FONT> * real vector are equal to <code>Double.NaN</code>, the real vector is equal to<a name="line.1187"></a> <FONT color="green">1188</FONT> * a vector with all <code>Double.NaN</code> coordinates.<a name="line.1188"></a> <FONT color="green">1189</FONT> * </p><a name="line.1189"></a> <FONT color="green">1190</FONT> *<a name="line.1190"></a> <FONT color="green">1191</FONT> * @param other Object to test for equality to this<a name="line.1191"></a> <FONT color="green">1192</FONT> * @return true if two vector objects are equal, false if<a name="line.1192"></a> <FONT color="green">1193</FONT> * object is null, not an instance of RealVector, or<a name="line.1193"></a> <FONT color="green">1194</FONT> * not equal to this RealVector instance<a name="line.1194"></a> <FONT color="green">1195</FONT> *<a name="line.1195"></a> <FONT color="green">1196</FONT> */<a name="line.1196"></a> <FONT color="green">1197</FONT> @Override<a name="line.1197"></a> <FONT color="green">1198</FONT> public boolean equals(Object other) {<a name="line.1198"></a> <FONT color="green">1199</FONT> <a name="line.1199"></a> <FONT color="green">1200</FONT> if (this == other) {<a name="line.1200"></a> <FONT color="green">1201</FONT> return true;<a name="line.1201"></a> <FONT color="green">1202</FONT> }<a name="line.1202"></a> <FONT color="green">1203</FONT> <a name="line.1203"></a> <FONT color="green">1204</FONT> if (other == null || !(other instanceof RealVector)) {<a name="line.1204"></a> <FONT color="green">1205</FONT> return false;<a name="line.1205"></a> <FONT color="green">1206</FONT> }<a name="line.1206"></a> <FONT color="green">1207</FONT> <a name="line.1207"></a> <FONT color="green">1208</FONT> <a name="line.1208"></a> <FONT color="green">1209</FONT> RealVector rhs = (RealVector) other;<a name="line.1209"></a> <FONT color="green">1210</FONT> if (data.length != rhs.getDimension()) {<a name="line.1210"></a> <FONT color="green">1211</FONT> return false;<a name="line.1211"></a> <FONT color="green">1212</FONT> }<a name="line.1212"></a> <FONT color="green">1213</FONT> <a name="line.1213"></a> <FONT color="green">1214</FONT> if (rhs.isNaN()) {<a name="line.1214"></a> <FONT color="green">1215</FONT> return this.isNaN();<a name="line.1215"></a> <FONT color="green">1216</FONT> }<a name="line.1216"></a> <FONT color="green">1217</FONT> <a name="line.1217"></a> <FONT color="green">1218</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.1218"></a> <FONT color="green">1219</FONT> if (data[i] != rhs.getEntry(i)) {<a name="line.1219"></a> <FONT color="green">1220</FONT> return false;<a name="line.1220"></a> <FONT color="green">1221</FONT> }<a name="line.1221"></a> <FONT color="green">1222</FONT> }<a name="line.1222"></a> <FONT color="green">1223</FONT> return true;<a name="line.1223"></a> <FONT color="green">1224</FONT> }<a name="line.1224"></a> <FONT color="green">1225</FONT> <a name="line.1225"></a> <FONT color="green">1226</FONT> /**<a name="line.1226"></a> <FONT color="green">1227</FONT> * Get a hashCode for the real vector.<a name="line.1227"></a> <FONT color="green">1228</FONT> * <p>All NaN values have the same hash code.</p><a name="line.1228"></a> <FONT color="green">1229</FONT> * @return a hash code value for this object<a name="line.1229"></a> <FONT color="green">1230</FONT> */<a name="line.1230"></a> <FONT color="green">1231</FONT> @Override<a name="line.1231"></a> <FONT color="green">1232</FONT> public int hashCode() {<a name="line.1232"></a> <FONT color="green">1233</FONT> if (isNaN()) {<a name="line.1233"></a> <FONT color="green">1234</FONT> return 9;<a name="line.1234"></a> <FONT color="green">1235</FONT> }<a name="line.1235"></a> <FONT color="green">1236</FONT> return MathUtils.hash(data);<a name="line.1236"></a> <FONT color="green">1237</FONT> }<a name="line.1237"></a> <FONT color="green">1238</FONT> <a name="line.1238"></a> <FONT color="green">1239</FONT> }<a name="line.1239"></a> </PRE> </BODY> </HTML>