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| 9 | <title>extrac2.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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| 28 | |
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| 30 | <div id="main_navbar"> |
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| 31 | |
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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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| 36 | |
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| 37 | |
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| 38 | |
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| 39 | <td >Directory</td> |
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| 43 | <td><a href="./../idldoc-categories.html" title="Browse library by category">Categories</a></td> |
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| 44 | |
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| 45 | |
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| 46 | |
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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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| 48 | |
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| 49 | |
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| 50 | |
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| 51 | <td><a href="./../search-page.html" title="Search library">Search</a></td> |
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| 52 | |
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| 53 | |
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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="../../../Matrix//extrac2.pro" title="Source code of a file">Source</a></td> |
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| 58 | |
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| 59 | |
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| 60 | |
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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="different.html"><<prev file</a> | <a href="inter.html">next file >></a> <a href="extrac2.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">Matrix/</a></h1> |
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| 82 | <h2 class="pro_file">extrac2.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 | extraction of subdomains of matrices; |
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| 91 | Even if the subdomain is "pierced" (see the example) |
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| 92 | By default, IDL can make extractions of subdomain: |
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| 93 | |
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| 94 | IDL> a=indgen(5,5) |
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| 95 | IDL> print, a |
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| 96 | 0 1 2 3 4 |
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| 97 | 5 6 7 8 9 |
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| 98 | 10 11 12 13 14 |
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| 99 | 15 16 17 18 19 |
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| 100 | 20 21 22 23 24 |
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| 101 | IDL> print, a[[0,2],3] |
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| 102 | 15 17 |
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| 103 | IDL> print, a[[0,2],*] |
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| 104 | 0 2 |
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| 105 | 5 7 |
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| 106 | 10 12 |
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| 107 | 15 17 |
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| 108 | 20 22 |
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| 109 | but |
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| 110 | IDL> print, a[[0,2],[3,4]] |
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| 111 | 15 22 |
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| 112 | while |
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| 113 | IDL> print, extrac2(a,[0,2],[3,4]) |
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| 114 | 15 17 |
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| 115 | 20 22 |
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| 116 | </div> |
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| 117 | |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | |
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| 122 | |
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| 123 | |
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| 124 | |
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| 125 | |
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| 126 | <div id="routine_details"> |
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| 127 | |
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| 128 | |
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| 129 | <div class="routine_details" id="_extrac2"> |
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| 130 | |
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| 131 | <h2><a class="top" href="#container">top</a>extrac2 <span class="categories"> |
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| 132 | Utilities |
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| 133 | </span></h2> |
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| 134 | |
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| 135 | <p class="header"> |
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| 136 | <span class="result">result = </span>extrac2(<span class="result"><a href="#_extrac2_param_array">array</a>, <a href="#_extrac2_param_index1">index1</a>, <a href="#_extrac2_param_index2">index2</a>, <a href="#_extrac2_param_index3">index3</a>, <a href="#_extrac2_param_index4">index4</a></span>)</p> |
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| 137 | |
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| 138 | <div class="comments"> |
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| 139 | </div> |
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| 140 | |
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| 141 | <h3>Return value</h3><div class="preformat"> |
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| 142 | a matrix 1,2,3 or 4d extract from input array |
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| 143 | -1 in case of mistake |
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| 144 | </div> |
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| 145 | |
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| 146 | |
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| 147 | <h3>Parameters</h3> |
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| 148 | |
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| 149 | |
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| 150 | <h4 id="_extrac2_param_array">array |
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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 | <span class="attr">required</span> |
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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 | a 1,2,3 or 4 dim input array |
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| 163 | </div> |
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| 164 | |
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| 165 | <h4 id="_extrac2_param_index1">index1 |
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| 166 | <span class="attr">in</span> |
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| 167 | |
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| 168 | |
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| 169 | <span class="attr">required</span> |
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| 170 | |
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| 171 | |
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| 172 | |
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| 173 | |
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| 174 | </h4> |
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| 175 | |
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| 176 | <div class="comments"> |
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| 177 | can have 2 forms: |
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| 178 | 1)a vector containing indexes of lines we want to keep |
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| 179 | 2)the string '*' if we want to keep all lines. |
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| 180 | </div> |
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| 181 | |
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| 182 | <h4 id="_extrac2_param_index2">index2 |
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| 183 | <span class="attr">in</span> |
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| 184 | |
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| 185 | |
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| 186 | <span class="attr">required</span> |
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| 187 | |
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| 188 | |
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| 189 | |
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| 190 | |
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| 191 | </h4> |
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| 192 | |
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| 193 | <div class="comments"> |
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| 194 | the same thing that index1 but for dim 2. |
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| 195 | </div> |
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| 196 | |
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| 197 | <h4 id="_extrac2_param_index3">index3 |
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| 198 | <span class="attr">in</span> |
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| 199 | |
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| 200 | |
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| 201 | <span class="attr">required</span> |
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| 202 | |
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| 203 | |
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| 204 | |
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| 205 | |
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| 206 | </h4> |
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| 207 | |
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| 208 | <div class="comments"> |
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| 209 | the same thing that index1 but for dim 3. |
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| 210 | </div> |
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| 211 | |
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| 212 | <h4 id="_extrac2_param_index4">index4 |
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| 213 | <span class="attr">in</span> |
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| 214 | |
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| 215 | |
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| 216 | <span class="attr">required</span> |
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| 217 | |
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| 218 | |
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| 219 | |
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| 220 | |
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| 221 | </h4> |
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| 222 | |
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| 223 | <div class="comments"> |
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| 224 | the same thing that index1 but for dim 4. |
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| 225 | </div> |
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| 226 | |
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| 227 | |
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| 228 | |
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| 229 | |
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| 230 | |
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| 231 | |
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| 232 | <h3>Examples</h3><div class="preformat"> |
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| 233 | I have a dim 2 matrix named A. I want extract a small intersection |
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| 234 | matrix 2d of the line 2,3 and 7 and of the column 0 and 1: |
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| 235 | |
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| 236 | IDL> res=extrac2(A,[2,3,7],[0,1]) |
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| 237 | |
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| 238 | other ex: |
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| 239 | IDL> print, a |
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| 240 | a b c |
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| 241 | d e f |
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| 242 | g h i |
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| 243 | IDL> print, extrac2(a,[0,2],[0,2]) |
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| 244 | a c |
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| 245 | g i |
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| 246 | </div> |
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| 247 | <h3>Version history</h3> |
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| 248 | |
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| 249 | <h4>Version</h4><div class="preformat"> |
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| 250 | $Id: extrac2.pro 325 2007-12-06 10:04:53Z pinsard $ |
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| 251 | </div> |
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| 252 | <h4>History</h4><div class="preformat"> |
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| 253 | Sebastien Masson (smasson@lodyc.jussieu.fr) |
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| 254 | 12/1/1999 |
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| 255 | 29/4/1999: correction of a bug and complement of the heading |
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| 256 | </div> |
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| 257 | |
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| 258 | |
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| 259 | <h3>Known issues</h3> |
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| 260 | |
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| 261 | |
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| 262 | |
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| 263 | <h4>Restrictions</h4><div class="preformat"> |
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| 264 | </div> |
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| 265 | |
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| 266 | |
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| 267 | |
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| 268 | |
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| 269 | |
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| 270 | |
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| 271 | |
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| 272 | |
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| 273 | |
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| 274 | <h3>Statistics</h3> |
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| 275 | <table class="statistics"> |
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| 276 | <tr><td>McCabe cyclic</td><td> 14</td></tr> |
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| 277 | <tr><td>McCabe essential</td><td> 1</td></tr> |
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| 278 | <tr><td>McCabe modular design</td><td> 1</td></tr> |
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| 279 | </table> |
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| 280 | |
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| 281 | |
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| 282 | </div> |
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| 283 | |
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| 284 | </div> |
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| 285 | |
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| 286 | |
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| 287 | |
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| 288 | <div id="tagline">Produced by IDLdoc 2.0.</div> |
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| 289 | |
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| 290 | </div> |
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| 291 | |
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| 292 | </body> |
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| 293 | </html> |
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