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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.stat.descriptive;<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> <a name="line.21"></a> <FONT color="green">022</FONT> import org.apache.commons.math.DimensionMismatchException;<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.linear.RealMatrix;<a name="line.24"></a> <FONT color="green">025</FONT> import org.apache.commons.math.stat.descriptive.moment.GeometricMean;<a name="line.25"></a> <FONT color="green">026</FONT> import org.apache.commons.math.stat.descriptive.moment.Mean;<a name="line.26"></a> <FONT color="green">027</FONT> import org.apache.commons.math.stat.descriptive.moment.VectorialCovariance;<a name="line.27"></a> <FONT color="green">028</FONT> import org.apache.commons.math.stat.descriptive.rank.Max;<a name="line.28"></a> <FONT color="green">029</FONT> import org.apache.commons.math.stat.descriptive.rank.Min;<a name="line.29"></a> <FONT color="green">030</FONT> import org.apache.commons.math.stat.descriptive.summary.Sum;<a name="line.30"></a> <FONT color="green">031</FONT> import org.apache.commons.math.stat.descriptive.summary.SumOfLogs;<a name="line.31"></a> <FONT color="green">032</FONT> import org.apache.commons.math.stat.descriptive.summary.SumOfSquares;<a name="line.32"></a> <FONT color="green">033</FONT> import org.apache.commons.math.util.MathUtils;<a name="line.33"></a> <FONT color="green">034</FONT> <a name="line.34"></a> <FONT color="green">035</FONT> /**<a name="line.35"></a> <FONT color="green">036</FONT> * <p>Computes summary statistics for a stream of n-tuples added using the<a name="line.36"></a> <FONT color="green">037</FONT> * {@link #addValue(double[]) addValue} method. The data values are not stored<a name="line.37"></a> <FONT color="green">038</FONT> * in memory, so this class can be used to compute statistics for very large<a name="line.38"></a> <FONT color="green">039</FONT> * n-tuple streams.</p><a name="line.39"></a> <FONT color="green">040</FONT> *<a name="line.40"></a> <FONT color="green">041</FONT> * <p>The {@link StorelessUnivariateStatistic} instances used to maintain<a name="line.41"></a> <FONT color="green">042</FONT> * summary state and compute statistics are configurable via setters.<a name="line.42"></a> <FONT color="green">043</FONT> * For example, the default implementation for the mean can be overridden by<a name="line.43"></a> <FONT color="green">044</FONT> * calling {@link #setMeanImpl(StorelessUnivariateStatistic[])}. Actual<a name="line.44"></a> <FONT color="green">045</FONT> * parameters to these methods must implement the<a name="line.45"></a> <FONT color="green">046</FONT> * {@link StorelessUnivariateStatistic} interface and configuration must be<a name="line.46"></a> <FONT color="green">047</FONT> * completed before <code>addValue</code> is called. No configuration is<a name="line.47"></a> <FONT color="green">048</FONT> * necessary to use the default, commons-math provided implementations.</p><a name="line.48"></a> <FONT color="green">049</FONT> *<a name="line.49"></a> <FONT color="green">050</FONT> * <p>To compute statistics for a stream of n-tuples, construct a<a name="line.50"></a> <FONT color="green">051</FONT> * MultivariateStatistics instance with dimension n and then use<a name="line.51"></a> <FONT color="green">052</FONT> * {@link #addValue(double[])} to add n-tuples. The <code>getXxx</code><a name="line.52"></a> <FONT color="green">053</FONT> * methods where Xxx is a statistic return an array of <code>double</code><a name="line.53"></a> <FONT color="green">054</FONT> * values, where for <code>i = 0,...,n-1</code> the i<sup>th</sup> array element is the<a name="line.54"></a> <FONT color="green">055</FONT> * value of the given statistic for data range consisting of the i<sup>th</sup> element of<a name="line.55"></a> <FONT color="green">056</FONT> * each of the input n-tuples. For example, if <code>addValue</code> is called<a name="line.56"></a> <FONT color="green">057</FONT> * with actual parameters {0, 1, 2}, then {3, 4, 5} and finally {6, 7, 8},<a name="line.57"></a> <FONT color="green">058</FONT> * <code>getSum</code> will return a three-element array with values<a name="line.58"></a> <FONT color="green">059</FONT> * {0+3+6, 1+4+7, 2+5+8}</p><a name="line.59"></a> <FONT color="green">060</FONT> *<a name="line.60"></a> <FONT color="green">061</FONT> * <p>Note: This class is not thread-safe. Use<a name="line.61"></a> <FONT color="green">062</FONT> * {@link SynchronizedMultivariateSummaryStatistics} if concurrent access from multiple<a name="line.62"></a> <FONT color="green">063</FONT> * threads is required.</p><a name="line.63"></a> <FONT color="green">064</FONT> *<a name="line.64"></a> <FONT color="green">065</FONT> * @since 1.2<a name="line.65"></a> <FONT color="green">066</FONT> * @version $Revision: 811833 $ $Date: 2009-09-06 12:27:50 -0400 (Sun, 06 Sep 2009) $<a name="line.66"></a> <FONT color="green">067</FONT> */<a name="line.67"></a> <FONT color="green">068</FONT> public class MultivariateSummaryStatistics<a name="line.68"></a> <FONT color="green">069</FONT> implements StatisticalMultivariateSummary, Serializable {<a name="line.69"></a> <FONT color="green">070</FONT> <a name="line.70"></a> <FONT color="green">071</FONT> /** Serialization UID */<a name="line.71"></a> <FONT color="green">072</FONT> private static final long serialVersionUID = 2271900808994826718L;<a name="line.72"></a> <FONT color="green">073</FONT> <a name="line.73"></a> <FONT color="green">074</FONT> /** Dimension of the data. */<a name="line.74"></a> <FONT color="green">075</FONT> private int k;<a name="line.75"></a> <FONT color="green">076</FONT> <a name="line.76"></a> <FONT color="green">077</FONT> /** Count of values that have been added */<a name="line.77"></a> <FONT color="green">078</FONT> private long n = 0;<a name="line.78"></a> <FONT color="green">079</FONT> <a name="line.79"></a> <FONT color="green">080</FONT> /** Sum statistic implementation - can be reset by setter. */<a name="line.80"></a> <FONT color="green">081</FONT> private StorelessUnivariateStatistic[] sumImpl;<a name="line.81"></a> <FONT color="green">082</FONT> <a name="line.82"></a> <FONT color="green">083</FONT> /** Sum of squares statistic implementation - can be reset by setter. */<a name="line.83"></a> <FONT color="green">084</FONT> private StorelessUnivariateStatistic[] sumSqImpl;<a name="line.84"></a> <FONT color="green">085</FONT> <a name="line.85"></a> <FONT color="green">086</FONT> /** Minimum statistic implementation - can be reset by setter. */<a name="line.86"></a> <FONT color="green">087</FONT> private StorelessUnivariateStatistic[] minImpl;<a name="line.87"></a> <FONT color="green">088</FONT> <a name="line.88"></a> <FONT color="green">089</FONT> /** Maximum statistic implementation - can be reset by setter. */<a name="line.89"></a> <FONT color="green">090</FONT> private StorelessUnivariateStatistic[] maxImpl;<a name="line.90"></a> <FONT color="green">091</FONT> <a name="line.91"></a> <FONT color="green">092</FONT> /** Sum of log statistic implementation - can be reset by setter. */<a name="line.92"></a> <FONT color="green">093</FONT> private StorelessUnivariateStatistic[] sumLogImpl;<a name="line.93"></a> <FONT color="green">094</FONT> <a name="line.94"></a> <FONT color="green">095</FONT> /** Geometric mean statistic implementation - can be reset by setter. */<a name="line.95"></a> <FONT color="green">096</FONT> private StorelessUnivariateStatistic[] geoMeanImpl;<a name="line.96"></a> <FONT color="green">097</FONT> <a name="line.97"></a> <FONT color="green">098</FONT> /** Mean statistic implementation - can be reset by setter. */<a name="line.98"></a> <FONT color="green">099</FONT> private StorelessUnivariateStatistic[] meanImpl;<a name="line.99"></a> <FONT color="green">100</FONT> <a name="line.100"></a> <FONT color="green">101</FONT> /** Covariance statistic implementation - cannot be reset. */<a name="line.101"></a> <FONT color="green">102</FONT> private VectorialCovariance covarianceImpl;<a name="line.102"></a> <FONT color="green">103</FONT> <a name="line.103"></a> <FONT color="green">104</FONT> /**<a name="line.104"></a> <FONT color="green">105</FONT> * Construct a MultivariateSummaryStatistics instance<a name="line.105"></a> <FONT color="green">106</FONT> * @param k dimension of the data<a name="line.106"></a> <FONT color="green">107</FONT> * @param isCovarianceBiasCorrected if true, the unbiased sample<a name="line.107"></a> <FONT color="green">108</FONT> * covariance is computed, otherwise the biased population covariance<a name="line.108"></a> <FONT color="green">109</FONT> * is computed<a name="line.109"></a> <FONT color="green">110</FONT> */<a name="line.110"></a> <FONT color="green">111</FONT> public MultivariateSummaryStatistics(int k, boolean isCovarianceBiasCorrected) {<a name="line.111"></a> <FONT color="green">112</FONT> this.k = k;<a name="line.112"></a> <FONT color="green">113</FONT> <a name="line.113"></a> <FONT color="green">114</FONT> sumImpl = new StorelessUnivariateStatistic[k];<a name="line.114"></a> <FONT color="green">115</FONT> sumSqImpl = new StorelessUnivariateStatistic[k];<a name="line.115"></a> <FONT color="green">116</FONT> minImpl = new StorelessUnivariateStatistic[k];<a name="line.116"></a> <FONT color="green">117</FONT> maxImpl = new StorelessUnivariateStatistic[k];<a name="line.117"></a> <FONT color="green">118</FONT> sumLogImpl = new StorelessUnivariateStatistic[k];<a name="line.118"></a> <FONT color="green">119</FONT> geoMeanImpl = new StorelessUnivariateStatistic[k];<a name="line.119"></a> <FONT color="green">120</FONT> meanImpl = new StorelessUnivariateStatistic[k];<a name="line.120"></a> <FONT color="green">121</FONT> <a name="line.121"></a> <FONT color="green">122</FONT> for (int i = 0; i < k; ++i) {<a name="line.122"></a> <FONT color="green">123</FONT> sumImpl[i] = new Sum();<a name="line.123"></a> <FONT color="green">124</FONT> sumSqImpl[i] = new SumOfSquares();<a name="line.124"></a> <FONT color="green">125</FONT> minImpl[i] = new Min();<a name="line.125"></a> <FONT color="green">126</FONT> maxImpl[i] = new Max();<a name="line.126"></a> <FONT color="green">127</FONT> sumLogImpl[i] = new SumOfLogs();<a name="line.127"></a> <FONT color="green">128</FONT> geoMeanImpl[i] = new GeometricMean();<a name="line.128"></a> <FONT color="green">129</FONT> meanImpl[i] = new Mean();<a name="line.129"></a> <FONT color="green">130</FONT> }<a name="line.130"></a> <FONT color="green">131</FONT> <a name="line.131"></a> <FONT color="green">132</FONT> covarianceImpl =<a name="line.132"></a> <FONT color="green">133</FONT> new VectorialCovariance(k, isCovarianceBiasCorrected);<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> * Add an n-tuple to the data<a name="line.138"></a> <FONT color="green">139</FONT> *<a name="line.139"></a> <FONT color="green">140</FONT> * @param value the n-tuple to add<a name="line.140"></a> <FONT color="green">141</FONT> * @throws DimensionMismatchException if the length of the array<a name="line.141"></a> <FONT color="green">142</FONT> * does not match the one used at construction<a name="line.142"></a> <FONT color="green">143</FONT> */<a name="line.143"></a> <FONT color="green">144</FONT> public void addValue(double[] value)<a name="line.144"></a> <FONT color="green">145</FONT> throws DimensionMismatchException {<a name="line.145"></a> <FONT color="green">146</FONT> checkDimension(value.length);<a name="line.146"></a> <FONT color="green">147</FONT> for (int i = 0; i < k; ++i) {<a name="line.147"></a> <FONT color="green">148</FONT> double v = value[i];<a name="line.148"></a> <FONT color="green">149</FONT> sumImpl[i].increment(v);<a name="line.149"></a> <FONT color="green">150</FONT> sumSqImpl[i].increment(v);<a name="line.150"></a> <FONT color="green">151</FONT> minImpl[i].increment(v);<a name="line.151"></a> <FONT color="green">152</FONT> maxImpl[i].increment(v);<a name="line.152"></a> <FONT color="green">153</FONT> sumLogImpl[i].increment(v);<a name="line.153"></a> <FONT color="green">154</FONT> geoMeanImpl[i].increment(v);<a name="line.154"></a> <FONT color="green">155</FONT> meanImpl[i].increment(v);<a name="line.155"></a> <FONT color="green">156</FONT> }<a name="line.156"></a> <FONT color="green">157</FONT> covarianceImpl.increment(value);<a name="line.157"></a> <FONT color="green">158</FONT> n++;<a name="line.158"></a> <FONT color="green">159</FONT> }<a name="line.159"></a> <FONT color="green">160</FONT> <a name="line.160"></a> <FONT color="green">161</FONT> /**<a name="line.161"></a> <FONT color="green">162</FONT> * Returns the dimension of the data<a name="line.162"></a> <FONT color="green">163</FONT> * @return The dimension of the data<a name="line.163"></a> <FONT color="green">164</FONT> */<a name="line.164"></a> <FONT color="green">165</FONT> public int getDimension() {<a name="line.165"></a> <FONT color="green">166</FONT> return k;<a name="line.166"></a> <FONT color="green">167</FONT> }<a name="line.167"></a> <FONT color="green">168</FONT> <a name="line.168"></a> <FONT color="green">169</FONT> /**<a name="line.169"></a> <FONT color="green">170</FONT> * Returns the number of available values<a name="line.170"></a> <FONT color="green">171</FONT> * @return The number of available values<a name="line.171"></a> <FONT color="green">172</FONT> */<a name="line.172"></a> <FONT color="green">173</FONT> public long getN() {<a name="line.173"></a> <FONT color="green">174</FONT> return n;<a name="line.174"></a> <FONT color="green">175</FONT> }<a name="line.175"></a> <FONT color="green">176</FONT> <a name="line.176"></a> <FONT color="green">177</FONT> /**<a name="line.177"></a> <FONT color="green">178</FONT> * Returns an array of the results of a statistic.<a name="line.178"></a> <FONT color="green">179</FONT> * @param stats univariate statistic array<a name="line.179"></a> <FONT color="green">180</FONT> * @return results array<a name="line.180"></a> <FONT color="green">181</FONT> */<a name="line.181"></a> <FONT color="green">182</FONT> private double[] getResults(StorelessUnivariateStatistic[] stats) {<a name="line.182"></a> <FONT color="green">183</FONT> double[] results = new double[stats.length];<a name="line.183"></a> <FONT color="green">184</FONT> for (int i = 0; i < results.length; ++i) {<a name="line.184"></a> <FONT color="green">185</FONT> results[i] = stats[i].getResult();<a name="line.185"></a> <FONT color="green">186</FONT> }<a name="line.186"></a> <FONT color="green">187</FONT> return results;<a name="line.187"></a> <FONT color="green">188</FONT> }<a name="line.188"></a> <FONT color="green">189</FONT> <a name="line.189"></a> <FONT color="green">190</FONT> /**<a name="line.190"></a> <FONT color="green">191</FONT> * Returns an array whose i<sup>th</sup> entry is the sum of the<a name="line.191"></a> <FONT color="green">192</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.192"></a> <FONT color="green">193</FONT> * {@link #addValue(double[])}<a name="line.193"></a> <FONT color="green">194</FONT> *<a name="line.194"></a> <FONT color="green">195</FONT> * @return the array of component sums<a name="line.195"></a> <FONT color="green">196</FONT> */<a name="line.196"></a> <FONT color="green">197</FONT> public double[] getSum() {<a name="line.197"></a> <FONT color="green">198</FONT> return getResults(sumImpl);<a name="line.198"></a> <FONT color="green">199</FONT> }<a name="line.199"></a> <FONT color="green">200</FONT> <a name="line.200"></a> <FONT color="green">201</FONT> /**<a name="line.201"></a> <FONT color="green">202</FONT> * Returns an array whose i<sup>th</sup> entry is the sum of squares of the<a name="line.202"></a> <FONT color="green">203</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.203"></a> <FONT color="green">204</FONT> * {@link #addValue(double[])}<a name="line.204"></a> <FONT color="green">205</FONT> *<a name="line.205"></a> <FONT color="green">206</FONT> * @return the array of component sums of squares<a name="line.206"></a> <FONT color="green">207</FONT> */<a name="line.207"></a> <FONT color="green">208</FONT> public double[] getSumSq() {<a name="line.208"></a> <FONT color="green">209</FONT> return getResults(sumSqImpl);<a name="line.209"></a> <FONT color="green">210</FONT> }<a name="line.210"></a> <FONT color="green">211</FONT> <a name="line.211"></a> <FONT color="green">212</FONT> /**<a name="line.212"></a> <FONT color="green">213</FONT> * Returns an array whose i<sup>th</sup> entry is the sum of logs of the<a name="line.213"></a> <FONT color="green">214</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.214"></a> <FONT color="green">215</FONT> * {@link #addValue(double[])}<a name="line.215"></a> <FONT color="green">216</FONT> *<a name="line.216"></a> <FONT color="green">217</FONT> * @return the array of component log sums<a name="line.217"></a> <FONT color="green">218</FONT> */<a name="line.218"></a> <FONT color="green">219</FONT> public double[] getSumLog() {<a name="line.219"></a> <FONT color="green">220</FONT> return getResults(sumLogImpl);<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> * Returns an array whose i<sup>th</sup> entry is the mean of the<a name="line.224"></a> <FONT color="green">225</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.225"></a> <FONT color="green">226</FONT> * {@link #addValue(double[])}<a name="line.226"></a> <FONT color="green">227</FONT> *<a name="line.227"></a> <FONT color="green">228</FONT> * @return the array of component means<a name="line.228"></a> <FONT color="green">229</FONT> */<a name="line.229"></a> <FONT color="green">230</FONT> public double[] getMean() {<a name="line.230"></a> <FONT color="green">231</FONT> return getResults(meanImpl);<a name="line.231"></a> <FONT color="green">232</FONT> }<a name="line.232"></a> <FONT color="green">233</FONT> <a name="line.233"></a> <FONT color="green">234</FONT> /**<a name="line.234"></a> <FONT color="green">235</FONT> * Returns an array whose i<sup>th</sup> entry is the standard deviation of the<a name="line.235"></a> <FONT color="green">236</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.236"></a> <FONT color="green">237</FONT> * {@link #addValue(double[])}<a name="line.237"></a> <FONT color="green">238</FONT> *<a name="line.238"></a> <FONT color="green">239</FONT> * @return the array of component standard deviations<a name="line.239"></a> <FONT color="green">240</FONT> */<a name="line.240"></a> <FONT color="green">241</FONT> public double[] getStandardDeviation() {<a name="line.241"></a> <FONT color="green">242</FONT> double[] stdDev = new double[k];<a name="line.242"></a> <FONT color="green">243</FONT> if (getN() < 1) {<a name="line.243"></a> <FONT color="green">244</FONT> Arrays.fill(stdDev, Double.NaN);<a name="line.244"></a> <FONT color="green">245</FONT> } else if (getN() < 2) {<a name="line.245"></a> <FONT color="green">246</FONT> Arrays.fill(stdDev, 0.0);<a name="line.246"></a> <FONT color="green">247</FONT> } else {<a name="line.247"></a> <FONT color="green">248</FONT> RealMatrix matrix = covarianceImpl.getResult();<a name="line.248"></a> <FONT color="green">249</FONT> for (int i = 0; i < k; ++i) {<a name="line.249"></a> <FONT color="green">250</FONT> stdDev[i] = Math.sqrt(matrix.getEntry(i, i));<a name="line.250"></a> <FONT color="green">251</FONT> }<a name="line.251"></a> <FONT color="green">252</FONT> }<a name="line.252"></a> <FONT color="green">253</FONT> return stdDev;<a name="line.253"></a> <FONT color="green">254</FONT> }<a name="line.254"></a> <FONT color="green">255</FONT> <a name="line.255"></a> <FONT color="green">256</FONT> /**<a name="line.256"></a> <FONT color="green">257</FONT> * Returns the covariance matrix of the values that have been added.<a name="line.257"></a> <FONT color="green">258</FONT> *<a name="line.258"></a> <FONT color="green">259</FONT> * @return the covariance matrix<a name="line.259"></a> <FONT color="green">260</FONT> */<a name="line.260"></a> <FONT color="green">261</FONT> public RealMatrix getCovariance() {<a name="line.261"></a> <FONT color="green">262</FONT> return covarianceImpl.getResult();<a name="line.262"></a> <FONT color="green">263</FONT> }<a name="line.263"></a> <FONT color="green">264</FONT> <a name="line.264"></a> <FONT color="green">265</FONT> /**<a name="line.265"></a> <FONT color="green">266</FONT> * Returns an array whose i<sup>th</sup> entry is the maximum of the<a name="line.266"></a> <FONT color="green">267</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.267"></a> <FONT color="green">268</FONT> * {@link #addValue(double[])}<a name="line.268"></a> <FONT color="green">269</FONT> *<a name="line.269"></a> <FONT color="green">270</FONT> * @return the array of component maxima<a name="line.270"></a> <FONT color="green">271</FONT> */<a name="line.271"></a> <FONT color="green">272</FONT> public double[] getMax() {<a name="line.272"></a> <FONT color="green">273</FONT> return getResults(maxImpl);<a name="line.273"></a> <FONT color="green">274</FONT> }<a name="line.274"></a> <FONT color="green">275</FONT> <a name="line.275"></a> <FONT color="green">276</FONT> /**<a name="line.276"></a> <FONT color="green">277</FONT> * Returns an array whose i<sup>th</sup> entry is the minimum of the<a name="line.277"></a> <FONT color="green">278</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.278"></a> <FONT color="green">279</FONT> * {@link #addValue(double[])}<a name="line.279"></a> <FONT color="green">280</FONT> *<a name="line.280"></a> <FONT color="green">281</FONT> * @return the array of component minima<a name="line.281"></a> <FONT color="green">282</FONT> */<a name="line.282"></a> <FONT color="green">283</FONT> public double[] getMin() {<a name="line.283"></a> <FONT color="green">284</FONT> return getResults(minImpl);<a name="line.284"></a> <FONT color="green">285</FONT> }<a name="line.285"></a> <FONT color="green">286</FONT> <a name="line.286"></a> <FONT color="green">287</FONT> /**<a name="line.287"></a> <FONT color="green">288</FONT> * Returns an array whose i<sup>th</sup> entry is the geometric mean of the<a name="line.288"></a> <FONT color="green">289</FONT> * i<sup>th</sup> entries of the arrays that have been added using<a name="line.289"></a> <FONT color="green">290</FONT> * {@link #addValue(double[])}<a name="line.290"></a> <FONT color="green">291</FONT> *<a name="line.291"></a> <FONT color="green">292</FONT> * @return the array of component geometric means<a name="line.292"></a> <FONT color="green">293</FONT> */<a name="line.293"></a> <FONT color="green">294</FONT> public double[] getGeometricMean() {<a name="line.294"></a> <FONT color="green">295</FONT> return getResults(geoMeanImpl);<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> * Generates a text report displaying<a name="line.299"></a> <FONT color="green">300</FONT> * summary statistics from values that<a name="line.300"></a> <FONT color="green">301</FONT> * have been added.<a name="line.301"></a> <FONT color="green">302</FONT> * @return String with line feeds displaying statistics<a name="line.302"></a> <FONT color="green">303</FONT> */<a name="line.303"></a> <FONT color="green">304</FONT> @Override<a name="line.304"></a> <FONT color="green">305</FONT> public String toString() {<a name="line.305"></a> <FONT color="green">306</FONT> StringBuffer outBuffer = new StringBuffer();<a name="line.306"></a> <FONT color="green">307</FONT> outBuffer.append("MultivariateSummaryStatistics:\n");<a name="line.307"></a> <FONT color="green">308</FONT> outBuffer.append("n: " + getN() + "\n");<a name="line.308"></a> <FONT color="green">309</FONT> append(outBuffer, getMin(), "min: ", ", ", "\n");<a name="line.309"></a> <FONT color="green">310</FONT> append(outBuffer, getMax(), "max: ", ", ", "\n");<a name="line.310"></a> <FONT color="green">311</FONT> append(outBuffer, getMean(), "mean: ", ", ", "\n");<a name="line.311"></a> <FONT color="green">312</FONT> append(outBuffer, getGeometricMean(), "geometric mean: ", ", ", "\n");<a name="line.312"></a> <FONT color="green">313</FONT> append(outBuffer, getSumSq(), "sum of squares: ", ", ", "\n");<a name="line.313"></a> <FONT color="green">314</FONT> append(outBuffer, getSumLog(), "sum of logarithms: ", ", ", "\n");<a name="line.314"></a> <FONT color="green">315</FONT> append(outBuffer, getStandardDeviation(), "standard deviation: ", ", ", "\n");<a name="line.315"></a> <FONT color="green">316</FONT> outBuffer.append("covariance: " + getCovariance().toString() + "\n");<a name="line.316"></a> <FONT color="green">317</FONT> return outBuffer.toString();<a name="line.317"></a> <FONT color="green">318</FONT> }<a name="line.318"></a> <FONT color="green">319</FONT> <a name="line.319"></a> <FONT color="green">320</FONT> /**<a name="line.320"></a> <FONT color="green">321</FONT> * Append a text representation of an array to a buffer.<a name="line.321"></a> <FONT color="green">322</FONT> * @param buffer buffer to fill<a name="line.322"></a> <FONT color="green">323</FONT> * @param data data array<a name="line.323"></a> <FONT color="green">324</FONT> * @param prefix text prefix<a name="line.324"></a> <FONT color="green">325</FONT> * @param separator elements separator<a name="line.325"></a> <FONT color="green">326</FONT> * @param suffix text suffix<a name="line.326"></a> <FONT color="green">327</FONT> */<a name="line.327"></a> <FONT color="green">328</FONT> private void append(StringBuffer buffer, double[] data,<a name="line.328"></a> <FONT color="green">329</FONT> String prefix, String separator, String suffix) {<a name="line.329"></a> <FONT color="green">330</FONT> buffer.append(prefix);<a name="line.330"></a> <FONT color="green">331</FONT> for (int i = 0; i < data.length; ++i) {<a name="line.331"></a> <FONT color="green">332</FONT> if (i > 0) {<a name="line.332"></a> <FONT color="green">333</FONT> buffer.append(separator);<a name="line.333"></a> <FONT color="green">334</FONT> }<a name="line.334"></a> <FONT color="green">335</FONT> buffer.append(data[i]);<a name="line.335"></a> <FONT color="green">336</FONT> }<a name="line.336"></a> <FONT color="green">337</FONT> buffer.append(suffix);<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> /**<a name="line.340"></a> <FONT color="green">341</FONT> * Resets all statistics and storage<a name="line.341"></a> <FONT color="green">342</FONT> */<a name="line.342"></a> <FONT color="green">343</FONT> public void clear() {<a name="line.343"></a> <FONT color="green">344</FONT> this.n = 0;<a name="line.344"></a> <FONT color="green">345</FONT> for (int i = 0; i < k; ++i) {<a name="line.345"></a> <FONT color="green">346</FONT> minImpl[i].clear();<a name="line.346"></a> <FONT color="green">347</FONT> maxImpl[i].clear();<a name="line.347"></a> <FONT color="green">348</FONT> sumImpl[i].clear();<a name="line.348"></a> <FONT color="green">349</FONT> sumLogImpl[i].clear();<a name="line.349"></a> <FONT color="green">350</FONT> sumSqImpl[i].clear();<a name="line.350"></a> <FONT color="green">351</FONT> geoMeanImpl[i].clear();<a name="line.351"></a> <FONT color="green">352</FONT> meanImpl[i].clear();<a name="line.352"></a> <FONT color="green">353</FONT> }<a name="line.353"></a> <FONT color="green">354</FONT> covarianceImpl.clear();<a name="line.354"></a> <FONT color="green">355</FONT> }<a name="line.355"></a> <FONT color="green">356</FONT> <a name="line.356"></a> <FONT color="green">357</FONT> /**<a name="line.357"></a> <FONT color="green">358</FONT> * Returns true iff <code>object</code> is a <code>SummaryStatistics</code><a name="line.358"></a> <FONT color="green">359</FONT> * instance and all statistics have the same values as this.<a name="line.359"></a> <FONT color="green">360</FONT> * @param object the object to test equality against.<a name="line.360"></a> <FONT color="green">361</FONT> * @return true if object equals this<a name="line.361"></a> <FONT color="green">362</FONT> */<a name="line.362"></a> <FONT color="green">363</FONT> @Override<a name="line.363"></a> <FONT color="green">364</FONT> public boolean equals(Object object) {<a name="line.364"></a> <FONT color="green">365</FONT> if (object == this ) {<a name="line.365"></a> <FONT color="green">366</FONT> return true;<a name="line.366"></a> <FONT color="green">367</FONT> }<a name="line.367"></a> <FONT color="green">368</FONT> if (object instanceof MultivariateSummaryStatistics == false) {<a name="line.368"></a> <FONT color="green">369</FONT> return false;<a name="line.369"></a> <FONT color="green">370</FONT> }<a name="line.370"></a> <FONT color="green">371</FONT> MultivariateSummaryStatistics stat = (MultivariateSummaryStatistics) object;<a name="line.371"></a> <FONT color="green">372</FONT> return MathUtils.equals(stat.getGeometricMean(), getGeometricMean()) &&<a name="line.372"></a> <FONT color="green">373</FONT> MathUtils.equals(stat.getMax(), getMax()) &&<a name="line.373"></a> <FONT color="green">374</FONT> MathUtils.equals(stat.getMean(), getMean()) &&<a name="line.374"></a> <FONT color="green">375</FONT> MathUtils.equals(stat.getMin(), getMin()) &&<a name="line.375"></a> <FONT color="green">376</FONT> MathUtils.equals(stat.getN(), getN()) &&<a name="line.376"></a> <FONT color="green">377</FONT> MathUtils.equals(stat.getSum(), getSum()) &&<a name="line.377"></a> <FONT color="green">378</FONT> MathUtils.equals(stat.getSumSq(), getSumSq()) &&<a name="line.378"></a> <FONT color="green">379</FONT> MathUtils.equals(stat.getSumLog(), getSumLog()) &&<a name="line.379"></a> <FONT color="green">380</FONT> stat.getCovariance().equals( getCovariance());<a name="line.380"></a> <FONT color="green">381</FONT> }<a name="line.381"></a> <FONT color="green">382</FONT> <a name="line.382"></a> <FONT color="green">383</FONT> /**<a name="line.383"></a> <FONT color="green">384</FONT> * Returns hash code based on values of statistics<a name="line.384"></a> <FONT color="green">385</FONT> *<a name="line.385"></a> <FONT color="green">386</FONT> * @return hash code<a name="line.386"></a> <FONT color="green">387</FONT> */<a name="line.387"></a> <FONT color="green">388</FONT> @Override<a name="line.388"></a> <FONT color="green">389</FONT> public int hashCode() {<a name="line.389"></a> <FONT color="green">390</FONT> int result = 31 + MathUtils.hash(getGeometricMean());<a name="line.390"></a> <FONT color="green">391</FONT> result = result * 31 + MathUtils.hash(getGeometricMean());<a name="line.391"></a> <FONT color="green">392</FONT> result = result * 31 + MathUtils.hash(getMax());<a name="line.392"></a> <FONT color="green">393</FONT> result = result * 31 + MathUtils.hash(getMean());<a name="line.393"></a> <FONT color="green">394</FONT> result = result * 31 + MathUtils.hash(getMin());<a name="line.394"></a> <FONT color="green">395</FONT> result = result * 31 + MathUtils.hash(getN());<a name="line.395"></a> <FONT color="green">396</FONT> result = result * 31 + MathUtils.hash(getSum());<a name="line.396"></a> <FONT color="green">397</FONT> result = result * 31 + MathUtils.hash(getSumSq());<a name="line.397"></a> <FONT color="green">398</FONT> result = result * 31 + MathUtils.hash(getSumLog());<a name="line.398"></a> <FONT color="green">399</FONT> result = result * 31 + getCovariance().hashCode();<a name="line.399"></a> <FONT color="green">400</FONT> return result;<a name="line.400"></a> <FONT color="green">401</FONT> }<a name="line.401"></a> <FONT color="green">402</FONT> <a name="line.402"></a> <FONT color="green">403</FONT> // Getters and setters for statistics implementations<a name="line.403"></a> <FONT color="green">404</FONT> /**<a name="line.404"></a> <FONT color="green">405</FONT> * Sets statistics implementations.<a name="line.405"></a> <FONT color="green">406</FONT> * @param newImpl new implementations for statistics<a name="line.406"></a> <FONT color="green">407</FONT> * @param oldImpl old implementations for statistics<a name="line.407"></a> <FONT color="green">408</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.408"></a> <FONT color="green">409</FONT> * does not match the one used at construction<a name="line.409"></a> <FONT color="green">410</FONT> * @throws IllegalStateException if data has already been added<a name="line.410"></a> <FONT color="green">411</FONT> * (i.e if n > 0)<a name="line.411"></a> <FONT color="green">412</FONT> */<a name="line.412"></a> <FONT color="green">413</FONT> private void setImpl(StorelessUnivariateStatistic[] newImpl,<a name="line.413"></a> <FONT color="green">414</FONT> StorelessUnivariateStatistic[] oldImpl)<a name="line.414"></a> <FONT color="green">415</FONT> throws DimensionMismatchException, IllegalStateException {<a name="line.415"></a> <FONT color="green">416</FONT> checkEmpty();<a name="line.416"></a> <FONT color="green">417</FONT> checkDimension(newImpl.length);<a name="line.417"></a> <FONT color="green">418</FONT> System.arraycopy(newImpl, 0, oldImpl, 0, newImpl.length);<a name="line.418"></a> <FONT color="green">419</FONT> }<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> * Returns the currently configured Sum implementation<a name="line.422"></a> <FONT color="green">423</FONT> *<a name="line.423"></a> <FONT color="green">424</FONT> * @return the StorelessUnivariateStatistic implementing the sum<a name="line.424"></a> <FONT color="green">425</FONT> */<a name="line.425"></a> <FONT color="green">426</FONT> public StorelessUnivariateStatistic[] getSumImpl() {<a name="line.426"></a> <FONT color="green">427</FONT> return sumImpl.clone();<a name="line.427"></a> <FONT color="green">428</FONT> }<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> * <p>Sets the implementation for the Sum.</p><a name="line.431"></a> <FONT color="green">432</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.432"></a> <FONT color="green">433</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.433"></a> <FONT color="green">434</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.434"></a> <FONT color="green">435</FONT> *<a name="line.435"></a> <FONT color="green">436</FONT> * @param sumImpl the StorelessUnivariateStatistic instance to use<a name="line.436"></a> <FONT color="green">437</FONT> * for computing the Sum<a name="line.437"></a> <FONT color="green">438</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.438"></a> <FONT color="green">439</FONT> * does not match the one used at construction<a name="line.439"></a> <FONT color="green">440</FONT> * @throws IllegalStateException if data has already been added<a name="line.440"></a> <FONT color="green">441</FONT> * (i.e if n > 0)<a name="line.441"></a> <FONT color="green">442</FONT> */<a name="line.442"></a> <FONT color="green">443</FONT> public void setSumImpl(StorelessUnivariateStatistic[] sumImpl)<a name="line.443"></a> <FONT color="green">444</FONT> throws DimensionMismatchException {<a name="line.444"></a> <FONT color="green">445</FONT> setImpl(sumImpl, this.sumImpl);<a name="line.445"></a> <FONT color="green">446</FONT> }<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> * Returns the currently configured sum of squares implementation<a name="line.449"></a> <FONT color="green">450</FONT> *<a name="line.450"></a> <FONT color="green">451</FONT> * @return the StorelessUnivariateStatistic implementing the sum of squares<a name="line.451"></a> <FONT color="green">452</FONT> */<a name="line.452"></a> <FONT color="green">453</FONT> public StorelessUnivariateStatistic[] getSumsqImpl() {<a name="line.453"></a> <FONT color="green">454</FONT> return sumSqImpl.clone();<a name="line.454"></a> <FONT color="green">455</FONT> }<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> * <p>Sets the implementation for the sum of squares.</p><a name="line.458"></a> <FONT color="green">459</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.459"></a> <FONT color="green">460</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.460"></a> <FONT color="green">461</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.461"></a> <FONT color="green">462</FONT> *<a name="line.462"></a> <FONT color="green">463</FONT> * @param sumsqImpl the StorelessUnivariateStatistic instance to use<a name="line.463"></a> <FONT color="green">464</FONT> * for computing the sum of squares<a name="line.464"></a> <FONT color="green">465</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.465"></a> <FONT color="green">466</FONT> * does not match the one used at construction<a name="line.466"></a> <FONT color="green">467</FONT> * @throws IllegalStateException if data has already been added<a name="line.467"></a> <FONT color="green">468</FONT> * (i.e if n > 0)<a name="line.468"></a> <FONT color="green">469</FONT> */<a name="line.469"></a> <FONT color="green">470</FONT> public void setSumsqImpl(StorelessUnivariateStatistic[] sumsqImpl)<a name="line.470"></a> <FONT color="green">471</FONT> throws DimensionMismatchException {<a name="line.471"></a> <FONT color="green">472</FONT> setImpl(sumsqImpl, this.sumSqImpl);<a name="line.472"></a> <FONT color="green">473</FONT> }<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> * Returns the currently configured minimum implementation<a name="line.476"></a> <FONT color="green">477</FONT> *<a name="line.477"></a> <FONT color="green">478</FONT> * @return the StorelessUnivariateStatistic implementing the minimum<a name="line.478"></a> <FONT color="green">479</FONT> */<a name="line.479"></a> <FONT color="green">480</FONT> public StorelessUnivariateStatistic[] getMinImpl() {<a name="line.480"></a> <FONT color="green">481</FONT> return minImpl.clone();<a name="line.481"></a> <FONT color="green">482</FONT> }<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> * <p>Sets the implementation for the minimum.</p><a name="line.485"></a> <FONT color="green">486</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.486"></a> <FONT color="green">487</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.487"></a> <FONT color="green">488</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.488"></a> <FONT color="green">489</FONT> *<a name="line.489"></a> <FONT color="green">490</FONT> * @param minImpl the StorelessUnivariateStatistic instance to use<a name="line.490"></a> <FONT color="green">491</FONT> * for computing the minimum<a name="line.491"></a> <FONT color="green">492</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.492"></a> <FONT color="green">493</FONT> * does not match the one used at construction<a name="line.493"></a> <FONT color="green">494</FONT> * @throws IllegalStateException if data has already been added<a name="line.494"></a> <FONT color="green">495</FONT> * (i.e if n > 0)<a name="line.495"></a> <FONT color="green">496</FONT> */<a name="line.496"></a> <FONT color="green">497</FONT> public void setMinImpl(StorelessUnivariateStatistic[] minImpl)<a name="line.497"></a> <FONT color="green">498</FONT> throws DimensionMismatchException {<a name="line.498"></a> <FONT color="green">499</FONT> setImpl(minImpl, this.minImpl);<a name="line.499"></a> <FONT color="green">500</FONT> }<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> * Returns the currently configured maximum implementation<a name="line.503"></a> <FONT color="green">504</FONT> *<a name="line.504"></a> <FONT color="green">505</FONT> * @return the StorelessUnivariateStatistic implementing the maximum<a name="line.505"></a> <FONT color="green">506</FONT> */<a name="line.506"></a> <FONT color="green">507</FONT> public StorelessUnivariateStatistic[] getMaxImpl() {<a name="line.507"></a> <FONT color="green">508</FONT> return maxImpl.clone();<a name="line.508"></a> <FONT color="green">509</FONT> }<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> * <p>Sets the implementation for the maximum.</p><a name="line.512"></a> <FONT color="green">513</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.513"></a> <FONT color="green">514</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.514"></a> <FONT color="green">515</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.515"></a> <FONT color="green">516</FONT> *<a name="line.516"></a> <FONT color="green">517</FONT> * @param maxImpl the StorelessUnivariateStatistic instance to use<a name="line.517"></a> <FONT color="green">518</FONT> * for computing the maximum<a name="line.518"></a> <FONT color="green">519</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.519"></a> <FONT color="green">520</FONT> * does not match the one used at construction<a name="line.520"></a> <FONT color="green">521</FONT> * @throws IllegalStateException if data has already been added<a name="line.521"></a> <FONT color="green">522</FONT> * (i.e if n > 0)<a name="line.522"></a> <FONT color="green">523</FONT> */<a name="line.523"></a> <FONT color="green">524</FONT> public void setMaxImpl(StorelessUnivariateStatistic[] maxImpl)<a name="line.524"></a> <FONT color="green">525</FONT> throws DimensionMismatchException {<a name="line.525"></a> <FONT color="green">526</FONT> setImpl(maxImpl, this.maxImpl);<a name="line.526"></a> <FONT color="green">527</FONT> }<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> * Returns the currently configured sum of logs implementation<a name="line.530"></a> <FONT color="green">531</FONT> *<a name="line.531"></a> <FONT color="green">532</FONT> * @return the StorelessUnivariateStatistic implementing the log sum<a name="line.532"></a> <FONT color="green">533</FONT> */<a name="line.533"></a> <FONT color="green">534</FONT> public StorelessUnivariateStatistic[] getSumLogImpl() {<a name="line.534"></a> <FONT color="green">535</FONT> return sumLogImpl.clone();<a name="line.535"></a> <FONT color="green">536</FONT> }<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> * <p>Sets the implementation for the sum of logs.</p><a name="line.539"></a> <FONT color="green">540</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.540"></a> <FONT color="green">541</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.541"></a> <FONT color="green">542</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.542"></a> <FONT color="green">543</FONT> *<a name="line.543"></a> <FONT color="green">544</FONT> * @param sumLogImpl the StorelessUnivariateStatistic instance to use<a name="line.544"></a> <FONT color="green">545</FONT> * for computing the log sum<a name="line.545"></a> <FONT color="green">546</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.546"></a> <FONT color="green">547</FONT> * does not match the one used at construction<a name="line.547"></a> <FONT color="green">548</FONT> * @throws IllegalStateException if data has already been added<a name="line.548"></a> <FONT color="green">549</FONT> * (i.e if n > 0)<a name="line.549"></a> <FONT color="green">550</FONT> */<a name="line.550"></a> <FONT color="green">551</FONT> public void setSumLogImpl(StorelessUnivariateStatistic[] sumLogImpl)<a name="line.551"></a> <FONT color="green">552</FONT> throws DimensionMismatchException {<a name="line.552"></a> <FONT color="green">553</FONT> setImpl(sumLogImpl, this.sumLogImpl);<a name="line.553"></a> <FONT color="green">554</FONT> }<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> * Returns the currently configured geometric mean implementation<a name="line.557"></a> <FONT color="green">558</FONT> *<a name="line.558"></a> <FONT color="green">559</FONT> * @return the StorelessUnivariateStatistic implementing the geometric mean<a name="line.559"></a> <FONT color="green">560</FONT> */<a name="line.560"></a> <FONT color="green">561</FONT> public StorelessUnivariateStatistic[] getGeoMeanImpl() {<a name="line.561"></a> <FONT color="green">562</FONT> return geoMeanImpl.clone();<a name="line.562"></a> <FONT color="green">563</FONT> }<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> * <p>Sets the implementation for the geometric mean.</p><a name="line.566"></a> <FONT color="green">567</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.567"></a> <FONT color="green">568</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.568"></a> <FONT color="green">569</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.569"></a> <FONT color="green">570</FONT> *<a name="line.570"></a> <FONT color="green">571</FONT> * @param geoMeanImpl the StorelessUnivariateStatistic instance to use<a name="line.571"></a> <FONT color="green">572</FONT> * for computing the geometric mean<a name="line.572"></a> <FONT color="green">573</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.573"></a> <FONT color="green">574</FONT> * does not match the one used at construction<a name="line.574"></a> <FONT color="green">575</FONT> * @throws IllegalStateException if data has already been added<a name="line.575"></a> <FONT color="green">576</FONT> * (i.e if n > 0)<a name="line.576"></a> <FONT color="green">577</FONT> */<a name="line.577"></a> <FONT color="green">578</FONT> public void setGeoMeanImpl(StorelessUnivariateStatistic[] geoMeanImpl)<a name="line.578"></a> <FONT color="green">579</FONT> throws DimensionMismatchException {<a name="line.579"></a> <FONT color="green">580</FONT> setImpl(geoMeanImpl, this.geoMeanImpl);<a name="line.580"></a> <FONT color="green">581</FONT> }<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> * Returns the currently configured mean implementation<a name="line.584"></a> <FONT color="green">585</FONT> *<a name="line.585"></a> <FONT color="green">586</FONT> * @return the StorelessUnivariateStatistic implementing the mean<a name="line.586"></a> <FONT color="green">587</FONT> */<a name="line.587"></a> <FONT color="green">588</FONT> public StorelessUnivariateStatistic[] getMeanImpl() {<a name="line.588"></a> <FONT color="green">589</FONT> return meanImpl.clone();<a name="line.589"></a> <FONT color="green">590</FONT> }<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> * <p>Sets the implementation for the mean.</p><a name="line.593"></a> <FONT color="green">594</FONT> * <p>This method must be activated before any data has been added - i.e.,<a name="line.594"></a> <FONT color="green">595</FONT> * before {@link #addValue(double[]) addValue} has been used to add data;<a name="line.595"></a> <FONT color="green">596</FONT> * otherwise an IllegalStateException will be thrown.</p><a name="line.596"></a> <FONT color="green">597</FONT> *<a name="line.597"></a> <FONT color="green">598</FONT> * @param meanImpl the StorelessUnivariateStatistic instance to use<a name="line.598"></a> <FONT color="green">599</FONT> * for computing the mean<a name="line.599"></a> <FONT color="green">600</FONT> * @throws DimensionMismatchException if the array dimension<a name="line.600"></a> <FONT color="green">601</FONT> * does not match the one used at construction<a name="line.601"></a> <FONT color="green">602</FONT> * @throws IllegalStateException if data has already been added<a name="line.602"></a> <FONT color="green">603</FONT> * (i.e if n > 0)<a name="line.603"></a> <FONT color="green">604</FONT> */<a name="line.604"></a> <FONT color="green">605</FONT> public void setMeanImpl(StorelessUnivariateStatistic[] meanImpl)<a name="line.605"></a> <FONT color="green">606</FONT> throws DimensionMismatchException {<a name="line.606"></a> <FONT color="green">607</FONT> setImpl(meanImpl, this.meanImpl);<a name="line.607"></a> <FONT color="green">608</FONT> }<a name="line.608"></a> <FONT color="green">609</FONT> <a name="line.609"></a> <FONT color="green">610</FONT> /**<a name="line.610"></a> <FONT color="green">611</FONT> * Throws IllegalStateException if n > 0.<a name="line.611"></a> <FONT color="green">612</FONT> */<a name="line.612"></a> <FONT color="green">613</FONT> private void checkEmpty() {<a name="line.613"></a> <FONT color="green">614</FONT> if (n > 0) {<a name="line.614"></a> <FONT color="green">615</FONT> throw MathRuntimeException.createIllegalStateException(<a name="line.615"></a> <FONT color="green">616</FONT> "{0} values have been added before statistic is configured",<a name="line.616"></a> <FONT color="green">617</FONT> n);<a name="line.617"></a> <FONT color="green">618</FONT> }<a name="line.618"></a> <FONT color="green">619</FONT> }<a name="line.619"></a> <FONT color="green">620</FONT> <a name="line.620"></a> <FONT color="green">621</FONT> /**<a name="line.621"></a> <FONT color="green">622</FONT> * Throws DimensionMismatchException if dimension != k.<a name="line.622"></a> <FONT color="green">623</FONT> * @param dimension dimension to check<a name="line.623"></a> <FONT color="green">624</FONT> * @throws DimensionMismatchException if dimension != k<a name="line.624"></a> <FONT color="green">625</FONT> */<a name="line.625"></a> <FONT color="green">626</FONT> private void checkDimension(int dimension)<a name="line.626"></a> <FONT color="green">627</FONT> throws DimensionMismatchException {<a name="line.627"></a> <FONT color="green">628</FONT> if (dimension != k) {<a name="line.628"></a> <FONT color="green">629</FONT> throw new DimensionMismatchException(dimension, k);<a name="line.629"></a> <FONT color="green">630</FONT> }<a name="line.630"></a> <FONT color="green">631</FONT> }<a name="line.631"></a> <FONT color="green">632</FONT> <a name="line.632"></a> <FONT color="green">633</FONT> }<a name="line.633"></a> </PRE> </BODY> </HTML>