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9 | <title>label_date.pro (SAXO Documentation)</title> |
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25 | <div id="navbar_title"> |
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26 | <h1>SAXO Documentation</h1> |
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30 | <div id="main_navbar"> |
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32 | <table cellspacing="0"> |
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33 | <tr> |
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34 | |
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35 | <td><a href="./../../../overview.html" title="Overview of library">Overview</a></td> |
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38 | |
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39 | <td >Directory</td> |
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47 | <td><a href="./../../../idldoc-index.html" title="Index of files, routines, and parameters">Index</a></td> |
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54 | <td id="selected">File</td> |
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55 | |
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56 | |
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57 | <td><a href="../../../../../ToBeReviewed/PLOTS/LABEL//label_date.pro" title="Source code of a file">Source</a></td> |
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58 | |
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61 | <td><a href="./../../../idldoc-help.html" title="Help on IDLdoc">Help</a></td> |
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62 | |
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63 | |
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64 | <td >Etc</td> |
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65 | |
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66 | <td id="flexible">Developer documentation</td> |
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67 | </tr> |
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68 | </table> |
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69 | |
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70 | </div> |
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71 | |
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72 | <div id="secondary_navbar"> |
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73 | |
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74 | <a href="label.html"><<prev file</a> | <a href="label_gmt.html">next file >></a> <a href="label_date.html" target="_TOP">view single page</a> | <a href="./../../../index.html" target="_TOP">view frames</a> summary: fields | routine details: <a href="#routine_details">routine</a> |
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75 | |
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76 | </div> |
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77 | |
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78 | |
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79 | <div id="container"> |
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80 | |
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81 | <h1 class="directory"><a href="directory-overview.html">ToBeReviewed/PLOTS/LABEL/</a></h1> |
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82 | <h2 class="pro_file">label_date.pro</h2> |
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83 | |
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84 | <div id="file_attr"> |
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85 | <dl> |
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86 | </dl> |
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87 | </div> |
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88 | |
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89 | <div id="file_comments"> |
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90 | This function labels axes with dates and times. |
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91 | </div> |
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92 | |
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93 | |
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94 | |
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95 | |
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96 | |
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97 | |
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98 | |
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99 | |
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100 | |
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101 | <div id="routine_details"> |
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102 | |
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103 | |
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104 | <div class="routine_details" id="_label_date"> |
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105 | |
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106 | <h2><a class="top" href="#container">top</a>label_date <span class="categories"> |
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107 | Plotting |
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108 | </span></h2> |
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109 | |
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110 | <p class="header"> |
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111 | <span class="result">result = </span>label_date(<span class="result"><a href="#_label_date_param_axis">axis</a>, <a href="#_label_date_param_index">index</a>, <a href="#_label_date_param_x">x</a></span>, <a href="#_label_date_keyword_DATE_FORMAT">DATE_FORMAT</a>=<span class="result">DATE_FORMAT</span>, <a href="#_label_date_keyword_MONTHS">MONTHS</a>=<span class="result">MONTHS</span>, <a href="#_label_date_keyword_OFFSET">OFFSET</a>=<span class="result">OFFSET</span>, <a href="#_label_date_keyword__EXTRA">_EXTRA</a>=<span class="result">_EXTRA</span>)</p> |
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112 | |
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113 | <div class="comments"> |
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114 | </div> |
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115 | |
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116 | |
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117 | |
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118 | |
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119 | <h3>Parameters</h3> |
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120 | |
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121 | |
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122 | <h4 id="_label_date_param_axis">axis |
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123 | <span class="attr">in</span> |
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124 | |
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125 | |
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126 | |
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127 | |
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128 | |
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129 | |
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130 | |
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131 | </h4> |
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132 | |
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133 | <div class="comments"> |
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134 | </div> |
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135 | |
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136 | <h4 id="_label_date_param_index">index |
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137 | <span class="attr">in</span> |
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138 | |
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139 | |
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140 | |
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141 | |
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142 | |
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143 | |
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144 | |
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145 | </h4> |
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146 | |
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147 | <div class="comments"> |
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148 | </div> |
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149 | |
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150 | <h4 id="_label_date_param_x">x |
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151 | <span class="attr">in</span> |
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152 | |
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153 | |
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154 | |
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155 | |
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156 | |
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157 | |
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158 | |
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159 | </h4> |
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160 | |
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161 | <div class="comments"> |
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162 | </div> |
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163 | |
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164 | |
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165 | |
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166 | |
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167 | |
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168 | |
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169 | <h3>Keywords</h3> |
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170 | |
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171 | <h4 id="_label_date_keyword_DATE_FORMAT">DATE_FORMAT |
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172 | |
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173 | |
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174 | |
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175 | |
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176 | |
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177 | |
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178 | |
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179 | |
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180 | </h4> |
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181 | |
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182 | <div class="comments"> |
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183 | a format string which may contain the following: |
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184 | %M for month (3 characters abbr) |
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185 | %N for month (2 digits abbr) |
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186 | %D for day of month, |
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187 | %Y for 4 digits year. |
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188 | %Z for last two digits of year. |
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189 | For time: |
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190 | %H for Hours, 2 digits. |
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191 | %I for Minutes, 2 digits. |
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192 | %S for Seconds, 2 digits. |
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193 | %% is %. |
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194 | Other characters are passed directly thru. |
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195 | For example, '%M %D, %Y' prints DEC 11, 1993 |
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196 | '%M %2Y' yields DEC 93 |
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197 | '%D-%M' yields 11-DEC |
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198 | '%D/%N/%Y' yields 11/12/1993 |
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199 | '%M!C%Y' yields DEC on the top line, 1993 on |
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200 | the bottom (!C is the new line graphic command). |
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201 | </div> |
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202 | |
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203 | <h4 id="_label_date_keyword_MONTHS">MONTHS |
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204 | |
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207 | |
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209 | |
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210 | |
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211 | |
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212 | </h4> |
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213 | |
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214 | <div class="comments"> |
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215 | The names of the months, a twelve element string array. |
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216 | If omitted, use Jan, Feb, ..., Dec. |
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217 | </div> |
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218 | |
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219 | <h4 id="_label_date_keyword_OFFSET">OFFSET |
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220 | |
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221 | |
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223 | |
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226 | |
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227 | |
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228 | </h4> |
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229 | |
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230 | <div class="comments"> |
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231 | An optional starting offset of the plot. |
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232 | Unfortunately, single precision floating point is not accurate |
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233 | enough to properly represent Julian times. This offset, which |
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234 | may be double precision, contains an offset that is added to |
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235 | all x values, before conversion to Julian date and time. |
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236 | </div> |
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237 | |
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238 | <h4 id="_label_date_keyword__EXTRA">_EXTRA |
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239 | |
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240 | |
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242 | |
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244 | |
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245 | |
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246 | |
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247 | </h4> |
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248 | |
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249 | <div class="comments"></div> |
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250 | |
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251 | |
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252 | |
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253 | <h3>Examples</h3><div class="preformat"> |
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254 | |
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255 | For example, to plot from Jan 1, 1993, to July 12, 1994: |
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256 | |
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257 | IDL> Start_date = julday(1, 1, 1993) |
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258 | IDL> End_date = julday(7, 12, 1994) |
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259 | IDL> ; Simple mm/dd |
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260 | IDL> Dummy = LABEL_DATE(DATE_FORMAT='%N/%D') |
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261 | IDL> ;Time axis |
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262 | IDL> x = findgen(end_date+1 - start_date) + start_date |
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263 | IDL> ; Plot with X axis style set to exact |
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264 | IDL> PLOT, x, sqrt(x), XTICKFORMAT = 'LABEL_DATE', XSTYLE=1 |
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265 | |
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266 | Example with times: |
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267 | |
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268 | For example, to plot from 3PM, Jan 1, 1993, to 5AM, Jan 3, 1993: |
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269 | |
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270 | IDL> ; Also starting offset |
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271 | IDL> Start_date = Julday(1,1,1993) |
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272 | IDL> ; Starting_time less offset |
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273 | IDL> Start_time = (3+12)/24. |
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274 | IDL> End_time = (Julday(1,3,1993) - Start_date) + 5./24. |
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275 | IDL> ; Ending date/time - offset, note that the order of operations is |
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276 | IDL> ; important to avoid loss of precision |
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277 | IDL> ; MMM NN <new line> HH:MM format |
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278 | IDL> Dummy = LABEL_DATE(DATE_FORMAT='%D %M!C%H:%I', offset=Start_date) |
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279 | IDL> ;Time axis |
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280 | IDL> x = findgen(20) * (End_time - Start_time) / 19 + start_time |
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281 | IDL> PLOT, x, sqrt(x), XTICKFORMAT = 'LABEL_DATE', XSTYLE=1 |
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282 | </div> |
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283 | <h3>Version history</h3> |
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284 | |
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285 | <h4>Version</h4><div class="preformat"> |
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286 | $Id: label_date.pro 371 2008-08-07 09:32:02Z pinsard $ |
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287 | </div> |
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288 | <h4>History</h4><div class="preformat"> |
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289 | DMS, RSI. April, 1993. Written. |
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290 | DMS, RSI. March, 1997. Added Time format. |
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291 | |
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292 | Copyright (c) 1993-1998, Research Systems, Inc. All rights reserved. |
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293 | Unauthorized reproduction prohibited. |
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294 | </div> |
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295 | |
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296 | |
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297 | <h3>Known issues</h3> |
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298 | |
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299 | |
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300 | |
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301 | <h4>Restrictions</h4><div class="preformat"> |
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302 | Only one date axis may be simultaneously active. |
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303 | </div> |
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304 | |
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305 | <h3>Other attributes</h3> |
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306 | |
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307 | |
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308 | <h4>Uses routines</h4><div class="preformat"> |
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309 | </div> |
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310 | |
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311 | |
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312 | <h4>Common blocks used</h4><div class="preformat">label_date_com</div> |
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313 | |
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314 | <h3>Statistics</h3> |
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315 | <table class="statistics"> |
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316 | <tr><td>McCabe cyclic</td><td> 17</td></tr> |
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317 | <tr><td>McCabe essential</td><td> 1</td></tr> |
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318 | <tr><td>McCabe modular design</td><td> 1</td></tr> |
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319 | </table> |
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320 | |
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321 | |
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322 | </div> |
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323 | |
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324 | </div> |
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325 | |
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326 | |
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327 | |
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328 | <div id="tagline">Produced by IDLdoc 2.0.</div> |
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330 | </div> |
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