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annotate d3s_examples/python-neo4jrestclient/static/platin/lib/flot/jquery.flot.time.js @ 39:88c5232f9d48 default tip

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author casties
date Thu, 04 Feb 2016 18:56:48 +0100
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8
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1 /* Pretty handling of time axes.
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2
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3 Copyright (c) 2007-2013 IOLA and Ole Laursen.
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4 Licensed under the MIT license.
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5
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6 Set axis.mode to "time" to enable. See the section "Time series data" in
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7 API.txt for details.
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8
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9 */
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10
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11 (function($) {
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12
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13 var options = {
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14 xaxis: {
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15 timezone: null, // "browser" for local to the client or timezone for timezone-js
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16 timeformat: null, // format string to use
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17 twelveHourClock: false, // 12 or 24 time in time mode
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18 monthNames: null // list of names of months
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19 }
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20 };
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21
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22 // round to nearby lower multiple of base
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23
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24 function floorInBase(n, base) {
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25 return base * Math.floor(n / base);
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26 }
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27
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28 // Returns a string with the date d formatted according to fmt.
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29 // A subset of the Open Group's strftime format is supported.
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30
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31 function formatDate(d, fmt, monthNames, dayNames) {
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32
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33 if (typeof d.strftime == "function") {
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34 return d.strftime(fmt);
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35 }
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36
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37 var leftPad = function(n, pad) {
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38 n = "" + n;
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39 pad = "" + (pad == null ? "0" : pad);
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40 return n.length == 1 ? pad + n : n;
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41 };
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42
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43 var r = [];
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44 var escape = false;
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45 var hours = d.getHours();
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46 var isAM = hours < 12;
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47
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48 if (monthNames == null) {
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49 monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
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50 }
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51
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52 if (dayNames == null) {
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53 dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
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54 }
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55
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56 var hours12;
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57
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58 if (hours > 12) {
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59 hours12 = hours - 12;
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60 } else if (hours == 0) {
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61 hours12 = 12;
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62 } else {
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63 hours12 = hours;
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64 }
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65
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66 for (var i = 0; i < fmt.length; ++i) {
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67
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68 var c = fmt.charAt(i);
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69
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70 if (escape) {
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71 switch (c) {
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72 case 'a': c = "" + dayNames[d.getDay()]; break;
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73 case 'b': c = "" + monthNames[d.getMonth()]; break;
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74 case 'd': c = leftPad(d.getDate()); break;
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75 case 'e': c = leftPad(d.getDate(), " "); break;
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76 case 'h': // For back-compat with 0.7; remove in 1.0
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77 case 'H': c = leftPad(hours); break;
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78 case 'I': c = leftPad(hours12); break;
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79 case 'l': c = leftPad(hours12, " "); break;
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80 case 'm': c = leftPad(d.getMonth() + 1); break;
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81 case 'M': c = leftPad(d.getMinutes()); break;
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82 // quarters not in Open Group's strftime specification
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83 case 'q':
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84 c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
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85 case 'S': c = leftPad(d.getSeconds()); break;
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86 case 'y': c = leftPad(d.getFullYear() % 100); break;
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87 case 'Y': c = "" + d.getFullYear(); break;
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88 case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
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89 case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
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90 case 'w': c = "" + d.getDay(); break;
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91 }
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92 r.push(c);
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93 escape = false;
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94 } else {
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95 if (c == "%") {
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96 escape = true;
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97 } else {
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98 r.push(c);
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99 }
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100 }
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101 }
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102
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103 return r.join("");
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104 }
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105
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106 // To have a consistent view of time-based data independent of which time
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107 // zone the client happens to be in we need a date-like object independent
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108 // of time zones. This is done through a wrapper that only calls the UTC
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109 // versions of the accessor methods.
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110
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111 function makeUtcWrapper(d) {
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112
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113 function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
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114 sourceObj[sourceMethod] = function() {
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115 return targetObj[targetMethod].apply(targetObj, arguments);
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116 };
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117 };
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118
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119 var utc = {
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120 date: d
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121 };
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122
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123 // support strftime, if found
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124
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125 if (d.strftime != undefined) {
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126 addProxyMethod(utc, "strftime", d, "strftime");
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127 }
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128
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129 addProxyMethod(utc, "getTime", d, "getTime");
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130 addProxyMethod(utc, "setTime", d, "setTime");
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131
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132 var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"];
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133
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134 for (var p = 0; p < props.length; p++) {
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135 addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
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136 addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
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137 }
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138
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139 return utc;
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140 };
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141
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142 // select time zone strategy. This returns a date-like object tied to the
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143 // desired timezone
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144
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145 function dateGenerator(ts, opts) {
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146 if (opts.timezone == "browser") {
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147 return new Date(ts);
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148 } else if (!opts.timezone || opts.timezone == "utc") {
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149 return makeUtcWrapper(new Date(ts));
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150 } else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
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151 var d = new timezoneJS.Date();
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152 // timezone-js is fickle, so be sure to set the time zone before
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153 // setting the time.
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154 d.setTimezone(opts.timezone);
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155 d.setTime(ts);
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156 return d;
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157 } else {
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158 return makeUtcWrapper(new Date(ts));
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159 }
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160 }
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161
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162 // map of app. size of time units in milliseconds
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163
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164 var timeUnitSize = {
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165 "second": 1000,
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166 "minute": 60 * 1000,
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167 "hour": 60 * 60 * 1000,
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168 "day": 24 * 60 * 60 * 1000,
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169 "month": 30 * 24 * 60 * 60 * 1000,
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170 "quarter": 3 * 30 * 24 * 60 * 60 * 1000,
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171 "year": 365.2425 * 24 * 60 * 60 * 1000
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172 };
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173
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174 // the allowed tick sizes, after 1 year we use
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175 // an integer algorithm
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176
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177 var baseSpec = [
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178 [1, "second"], [2, "second"], [5, "second"], [10, "second"],
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179 [30, "second"],
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180 [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
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181 [30, "minute"],
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182 [1, "hour"], [2, "hour"], [4, "hour"],
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183 [8, "hour"], [12, "hour"],
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184 [1, "day"], [2, "day"], [3, "day"],
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185 [0.25, "month"], [0.5, "month"], [1, "month"],
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186 [2, "month"]
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187 ];
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188
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189 // we don't know which variant(s) we'll need yet, but generating both is
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190 // cheap
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191
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192 var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
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193 [1, "year"]]);
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194 var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
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195 [1, "year"]]);
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196
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197 function init(plot) {
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198 plot.hooks.processOptions.push(function (plot, options) {
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199 $.each(plot.getAxes(), function(axisName, axis) {
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200
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201 var opts = axis.options;
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202
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203 if (opts.mode == "time") {
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204 axis.tickGenerator = function(axis) {
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205
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206 var ticks = [];
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207 var d = dateGenerator(axis.min, opts);
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208 var minSize = 0;
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209
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210 // make quarter use a possibility if quarters are
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211 // mentioned in either of these options
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212
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213 var spec = (opts.tickSize && opts.tickSize[1] ===
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214 "quarter") ||
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215 (opts.minTickSize && opts.minTickSize[1] ===
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216 "quarter") ? specQuarters : specMonths;
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217
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218 if (opts.minTickSize != null) {
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219 if (typeof opts.tickSize == "number") {
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220 minSize = opts.tickSize;
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221 } else {
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222 minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
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223 }
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224 }
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225
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226 for (var i = 0; i < spec.length - 1; ++i) {
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227 if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]]
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228 + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
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229 && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
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230 break;
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231 }
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232 }
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233
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234 var size = spec[i][0];
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235 var unit = spec[i][1];
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236
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237 // special-case the possibility of several years
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238
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239 if (unit == "year") {
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240
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241 // if given a minTickSize in years, just use it,
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242 // ensuring that it's an integer
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243
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244 if (opts.minTickSize != null && opts.minTickSize[1] == "year") {
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245 size = Math.floor(opts.minTickSize[0]);
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246 } else {
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247
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248 var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
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249 var norm = (axis.delta / timeUnitSize.year) / magn;
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250
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251 if (norm < 1.5) {
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252 size = 1;
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253 } else if (norm < 3) {
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254 size = 2;
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255 } else if (norm < 7.5) {
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256 size = 5;
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257 } else {
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258 size = 10;
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259 }
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260
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261 size *= magn;
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262 }
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263
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264 // minimum size for years is 1
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265
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266 if (size < 1) {
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267 size = 1;
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268 }
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269 }
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270
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271 axis.tickSize = opts.tickSize || [size, unit];
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272 var tickSize = axis.tickSize[0];
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273 unit = axis.tickSize[1];
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274
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275 var step = tickSize * timeUnitSize[unit];
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276
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277 if (unit == "second") {
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278 d.setSeconds(floorInBase(d.getSeconds(), tickSize));
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279 } else if (unit == "minute") {
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280 d.setMinutes(floorInBase(d.getMinutes(), tickSize));
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281 } else if (unit == "hour") {
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282 d.setHours(floorInBase(d.getHours(), tickSize));
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283 } else if (unit == "month") {
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284 d.setMonth(floorInBase(d.getMonth(), tickSize));
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285 } else if (unit == "quarter") {
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286 d.setMonth(3 * floorInBase(d.getMonth() / 3,
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287 tickSize));
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288 } else if (unit == "year") {
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289 d.setFullYear(floorInBase(d.getFullYear(), tickSize));
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290 }
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291
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292 // reset smaller components
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293
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294 d.setMilliseconds(0);
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295
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296 if (step >= timeUnitSize.minute) {
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297 d.setSeconds(0);
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298 }
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299 if (step >= timeUnitSize.hour) {
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300 d.setMinutes(0);
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301 }
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302 if (step >= timeUnitSize.day) {
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303 d.setHours(0);
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304 }
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305 if (step >= timeUnitSize.day * 4) {
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306 d.setDate(1);
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307 }
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308 if (step >= timeUnitSize.month * 2) {
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309 d.setMonth(floorInBase(d.getMonth(), 3));
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310 }
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311 if (step >= timeUnitSize.quarter * 2) {
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312 d.setMonth(floorInBase(d.getMonth(), 6));
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313 }
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314 if (step >= timeUnitSize.year) {
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315 d.setMonth(0);
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316 }
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317
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318 var carry = 0;
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319 var v = Number.NaN;
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320 var prev;
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321
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322 do {
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323
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324 prev = v;
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325 v = d.getTime();
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326 ticks.push(v);
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327
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328 if (unit == "month" || unit == "quarter") {
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329 if (tickSize < 1) {
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330
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331 // a bit complicated - we'll divide the
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332 // month/quarter up but we need to take
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333 // care of fractions so we don't end up in
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334 // the middle of a day
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335
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336 d.setDate(1);
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337 var start = d.getTime();
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338 d.setMonth(d.getMonth() +
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339 (unit == "quarter" ? 3 : 1));
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340 var end = d.getTime();
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341 d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
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342 carry = d.getHours();
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343 d.setHours(0);
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344 } else {
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345 d.setMonth(d.getMonth() +
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346 tickSize * (unit == "quarter" ? 3 : 1));
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347 }
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348 } else if (unit == "year") {
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349 d.setFullYear(d.getFullYear() + tickSize);
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350 } else {
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351 d.setTime(v + step);
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352 }
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353 } while (v < axis.max && v != prev);
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354
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355 return ticks;
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356 };
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357
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358 axis.tickFormatter = function (v, axis) {
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359
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360 var d = dateGenerator(v, axis.options);
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361
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362 // first check global format
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363
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364 if (opts.timeformat != null) {
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365 return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
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366 }
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367
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368 // possibly use quarters if quarters are mentioned in
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369 // any of these places
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370
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371 var useQuarters = (axis.options.tickSize &&
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372 axis.options.tickSize[1] == "quarter") ||
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373 (axis.options.minTickSize &&
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374 axis.options.minTickSize[1] == "quarter");
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375
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376 var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
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377 var span = axis.max - axis.min;
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378 var suffix = (opts.twelveHourClock) ? " %p" : "";
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379 var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
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380 var fmt;
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381
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382 if (t < timeUnitSize.minute) {
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383 fmt = hourCode + ":%M:%S" + suffix;
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384 } else if (t < timeUnitSize.day) {
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385 if (span < 2 * timeUnitSize.day) {
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386 fmt = hourCode + ":%M" + suffix;
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387 } else {
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388 fmt = "%b %d " + hourCode + ":%M" + suffix;
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389 }
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390 } else if (t < timeUnitSize.month) {
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391 fmt = "%b %d";
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392 } else if ((useQuarters && t < timeUnitSize.quarter) ||
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393 (!useQuarters && t < timeUnitSize.year)) {
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394 if (span < timeUnitSize.year) {
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395 fmt = "%b";
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396 } else {
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397 fmt = "%b %Y";
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398 }
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399 } else if (useQuarters && t < timeUnitSize.year) {
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400 if (span < timeUnitSize.year) {
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401 fmt = "Q%q";
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402 } else {
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403 fmt = "Q%q %Y";
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404 }
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405 } else {
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406 fmt = "%Y";
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407 }
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408
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409 var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
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410
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411 return rt;
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412 };
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413 }
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414 });
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415 });
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416 }
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417
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418 $.plot.plugins.push({
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419 init: init,
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420 options: options,
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421 name: 'time',
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422 version: '1.0'
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423 });
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424
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425 // Time-axis support used to be in Flot core, which exposed the
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426 // formatDate function on the plot object. Various plugins depend
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Dirk Wintergruen <dwinter@mpiwg-berlin.mpg.de>
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427 // on the function, so we need to re-expose it here.
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428
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429 $.plot.formatDate = formatDate;
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430 $.plot.dateGenerator = dateGenerator;
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431
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432 })(jQuery);