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| 5 | <title>computegrid.pro (SAXO Documentation Assistant)</title> |
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| 46 | <tr> |
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| 47 | <td width="10%"> |
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| 48 | <a href="changemsk.html"><img src="./../prev.gif" border="0" alt="Previous"></a></td> |
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| 49 | <td width="80%" align="center" valign="center"> |
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| 50 | <font size=-1><i>SAXO Documentation Assistant</i>: <a href="./../home.html">Overview</a></font></td> |
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| 51 | <td width="10%" align="right"> |
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| 52 | <a href="micromeshmask.html"><img src="./../next.gif" border="0" alt="Next"></a></td> |
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| 53 | </tr> |
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| 54 | </table> |
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| 55 | |
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| 56 | |
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| 57 | <h1><font size="-2">Grid/</font></h1> |
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| 58 | <h2>computegrid.pro</h2> |
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| 59 | |
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| 60 | <dl> |
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| 61 | </dl> |
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| 62 | |
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| 63 | compute the grid parameters from cm_4mesh common: |
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| 64 | |
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| 65 | computegrid, startx, starty, stepx, stepy, nx, ny |
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| 66 | computegrid, startx, starty, stepx, stepy |
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| 67 | computegrid, xaxis = xaxis, yaxis = yaxis |
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| 68 | or a suitable mix... |
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| 69 | |
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| 70 | glamt |
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| 71 | glamf |
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| 72 | gphit |
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| 73 | gphit |
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| 74 | e1t |
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| 75 | e2t |
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| 76 | horizontal parameters |
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| 77 | |
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| 78 | glamu {in} |
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| 79 | glamv {in} |
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| 80 | gphiu {in} |
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| 81 | gphiv {in} |
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| 82 | e1u {in} |
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| 83 | e1v {in} |
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| 84 | e1f {in} |
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| 85 | e2u {in} |
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| 86 | e2v {in} |
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| 87 | e2f {in} |
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| 88 | horizontal parameters if FULLCGRID keyword is defined |
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| 89 | |
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| 90 | gdept |
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| 91 | gdepw |
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| 92 | e3t |
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| 93 | e3w |
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| 94 | verticals parameters |
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| 95 | |
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| 96 | tmask |
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| 97 | masks |
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| 98 | |
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| 99 | umaskred {in} |
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| 100 | vmaskred {in} |
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| 101 | fmaskredx {in} |
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| 102 | fmaskredy {in} |
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| 103 | masks if FULLCGRID keyword is defined |
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| 104 | |
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| 105 | triangles_list |
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| 106 | triangulation |
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| 107 | |
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| 108 | |
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| 109 | |
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| 110 | |
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| 111 | |
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| 112 | <a name="#_computegrid"></a> |
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| 113 | |
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| 114 | <h2>computegrid <font size="-1" color="#006633"> |
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| 115 | Grid |
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| 116 | </font></h2> |
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| 117 | |
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| 118 | <p><font face="Courier">computegrid<i>, <a href="#_computegrid_keyword_startx">startx</a>, <a href="#_computegrid_keyword_starty">starty</a>, <a href="#_computegrid_keyword_stepxin">stepxin</a>, <a href="#_computegrid_keyword_stepyin">stepyin</a>, <a href="#_computegrid_keyword_nxin">nxin</a>, <a href="#_computegrid_keyword_nyin">nyin</a></i>, <a href="#_computegrid_keyword_XAXIS">XAXIS</a>=<i>XAXIS</i>, <a href="#_computegrid_keyword_YAXIS">YAXIS</a>=<i>YAXIS</i>, <a href="#_computegrid_keyword_ZAXIS">ZAXIS</a>=<i>ZAXIS</i>, <a href="#_computegrid_keyword_MASK">MASK</a>=<i>MASK</i>, <a href="#_computegrid_keyword_GLAMBOUNDARY">GLAMBOUNDARY</a>=<i>GLAMBOUNDARY</i>, <a href="#_computegrid_keyword_XMINMESH">XMINMESH</a>=<i>XMINMESH</i>, <a href="#_computegrid_keyword_XMAXMESH">XMAXMESH</a>=<i>XMAXMESH</i>, <a href="#_computegrid_keyword_YMINMESH">YMINMESH</a>=<i>YMINMESH</i>, <a href="#_computegrid_keyword_YMAXMESH">YMAXMESH</a>=<i>YMAXMESH</i>, <a href="#_computegrid_keyword_ZMINMESH">ZMINMESH</a>=<i>ZMINMESH</i>, <a href="#_computegrid_keyword_ZMAXMESH">ZMAXMESH</a>=<i>ZMAXMESH</i>, <a href="#_computegrid_keyword_ONEARTH">ONEARTH</a>=<i>ONEARTH</i>, <a href="#_computegrid_keyword_PERIODIC">PERIODIC</a>=<i>PERIODIC</i>, <a href="#_computegrid_keyword_PLAIN">PLAIN</a>=<i>PLAIN</i>, <a href="#_computegrid_keyword_SHIFT">SHIFT</a>=<i>SHIFT</i>, <a href="#_computegrid_keyword_STRIDE">STRIDE</a>=<i>STRIDE</i>, <a href="#_computegrid_keyword_FULLCGRID">FULLCGRID</a>=<i>FULLCGRID</i>, <a href="#_computegrid_keyword_XYINDEX">XYINDEX</a>=<i>XYINDEX</i>, <a href="#_computegrid_keyword_FBASE2TBASE">FBASE2TBASE</a>=<i>FBASE2TBASE</i>, <a href="#_computegrid_keyword_STRCALLING">STRCALLING</a>=<i>string</i>, <a href="#_computegrid_keyword__extra">_extra</a>=<i>_extra</i></font></p> |
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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 | <h3>Parameters</h3> |
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| 127 | |
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| 128 | |
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| 129 | <a name="#_computegrid_keyword_startx"></a> |
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| 130 | <h4>startx |
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| 131 | <font size="-1" color="#006633">in</font> |
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| 132 | |
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| 133 | |
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| 134 | <font size="-1" color="#006633">required</font> |
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| 135 | |
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| 136 | |
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| 137 | |
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| 138 | |
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| 139 | </h4> |
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| 140 | |
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| 141 | scalar, x starting point |
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| 142 | |
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| 143 | |
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| 144 | <a name="#_computegrid_keyword_starty"></a> |
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| 145 | <h4>starty |
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| 146 | <font size="-1" color="#006633">in</font> |
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| 147 | |
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| 148 | |
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| 149 | <font size="-1" color="#006633">required</font> |
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| 150 | |
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| 151 | |
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| 152 | |
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| 153 | |
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| 154 | </h4> |
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| 155 | |
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| 156 | scalar, y starting point |
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| 157 | |
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| 158 | |
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| 159 | <a name="#_computegrid_keyword_stepxin"></a> |
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| 160 | <h4>stepxin |
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| 161 | <font size="-1" color="#006633">in</font> |
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| 162 | |
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| 163 | |
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| 164 | <font size="-1" color="#006633">required</font> |
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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 | </h4> |
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| 170 | |
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| 171 | scalar or vector: x direction step, must be > 0 |
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| 172 | if vector nx is not used |
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| 173 | |
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| 174 | |
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| 175 | <a name="#_computegrid_keyword_stepyin"></a> |
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| 176 | <h4>stepyin |
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| 177 | <font size="-1" color="#006633">in</font> |
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| 178 | |
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| 179 | |
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| 180 | <font size="-1" color="#006633">required</font> |
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| 181 | |
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| 182 | |
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| 183 | |
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| 184 | |
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| 185 | </h4> |
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| 186 | |
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| 187 | scalar or vector: y direction step, |
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| 188 | could be > 0 (south to north) or < 0 (north to south) |
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| 189 | if vector ny is not used |
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| 190 | |
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| 191 | |
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| 192 | <a name="#_computegrid_keyword_nxin"></a> |
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| 193 | <h4>nxin |
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| 194 | <font size="-1" color="#006633">in</font> |
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| 195 | |
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| 196 | |
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| 197 | <font size="-1" color="#006633">required</font> |
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| 198 | |
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| 199 | |
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| 200 | |
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| 201 | |
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| 202 | </h4> |
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| 203 | |
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| 204 | scalar, number of points in x direction |
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| 205 | |
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| 206 | |
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| 207 | <a name="#_computegrid_keyword_nyin"></a> |
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| 208 | <h4>nyin |
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| 209 | <font size="-1" color="#006633">in</font> |
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| 210 | |
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| 211 | |
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| 212 | <font size="-1" color="#006633">required</font> |
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| 213 | |
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| 214 | |
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| 215 | |
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| 216 | |
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| 217 | </h4> |
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| 218 | |
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| 219 | scalar, number of points in y direction |
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| 220 | |
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| 221 | |
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| 222 | |
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| 223 | |
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| 224 | |
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| 225 | <h3>Keywords</h3> |
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| 226 | |
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| 227 | |
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| 228 | <a name="#_computegrid_keyword_XAXIS"></a> |
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| 229 | <h4>XAXIS |
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| 230 | |
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| 231 | |
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| 232 | |
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| 233 | |
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| 234 | |
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| 235 | |
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| 236 | |
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| 237 | |
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| 238 | </h4> |
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| 239 | |
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| 240 | to specify longitude1 with a 1 or 2 dimension array, in |
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| 241 | this case startx, stepx and nx are not used but could be |
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| 242 | necessary if the y axis is not defined with yaxis. It must be |
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| 243 | possible to sort the first line of xaxis in the increasing |
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| 244 | order by shifting its elements. |
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| 245 | |
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| 246 | |
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| 247 | <a name="#_computegrid_keyword_YAXIS"></a> |
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| 248 | <h4>YAXIS |
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| 249 | |
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| 250 | |
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| 251 | |
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| 252 | |
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| 253 | |
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| 254 | |
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| 255 | |
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| 256 | |
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| 257 | </h4> |
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| 258 | |
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| 259 | to specify latitudes with a 1 or 2 dimension array, in |
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| 260 | this case starty, stepy and ny are not used but starty and |
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| 261 | stepy could be necessary if the x axis is not defined with xaxis. |
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| 262 | It must be sorted in the increasing or deceasing order |
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| 263 | (along each column if 2d array). |
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| 264 | |
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| 265 | |
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| 266 | <a name="#_computegrid_keyword_ZAXIS"></a> |
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| 267 | <h4>ZAXIS |
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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 | |
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| 275 | |
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| 276 | </h4> |
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| 277 | |
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| 278 | to specify the vertical axis with a 1 dimension |
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| 279 | array. Must be sorted in the increasing or deceasing order |
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| 280 | |
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| 281 | |
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| 282 | <a name="#_computegrid_keyword_MASK"></a> |
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| 283 | <h4>MASK |
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| 284 | |
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| 285 | |
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| 286 | |
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| 287 | |
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| 288 | |
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| 289 | |
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| 290 | |
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| 291 | |
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| 292 | </h4> |
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| 293 | |
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| 294 | to specify the mask with a 2 or 3 dimension array |
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| 295 | |
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| 296 | |
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| 297 | <a name="#_computegrid_keyword_GLAMBOUNDARY"></a> |
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| 298 | <h4>GLAMBOUNDARY |
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| 299 | |
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| 300 | |
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| 301 | |
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| 302 | |
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| 303 | |
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| 304 | |
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| 305 | |
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| 306 | |
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| 307 | </h4> |
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| 308 | |
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| 309 | a 2 elements vector, [lon1,lon2], the longitude |
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| 310 | boundaries that should be used to visualize the data. |
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| 311 | we must have lon2 > lon1 and lon2 - lon1 le 360 |
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| 312 | key_shift will be defined automaticaly computed according to |
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| 313 | glamboundary by using the FIRST LINE of glamt but |
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| 314 | key_shift will /= 0 only if key_periodic = 1 |
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| 315 | |
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| 316 | |
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| 317 | <a name="#_computegrid_keyword_XMINMESH"></a> |
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| 318 | <h4>XMINMESH |
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| 319 | |
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| 320 | |
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| 321 | |
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| 322 | |
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| 323 | |
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| 324 | |
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| 325 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>0L</i></font> |
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| 326 | |
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| 327 | </h4> |
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| 328 | |
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| 329 | |
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| 330 | |
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| 331 | <a name="#_computegrid_keyword_XMAXMESH"></a> |
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| 332 | <h4>XMAXMESH |
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| 333 | |
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| 334 | |
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| 335 | |
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| 336 | |
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| 337 | |
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| 338 | |
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| 339 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>jpiglo-1</i></font> |
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| 340 | |
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| 341 | </h4> |
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| 342 | |
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| 343 | |
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| 344 | |
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| 345 | <a name="#_computegrid_keyword_YMINMESH"></a> |
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| 346 | <h4>YMINMESH |
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| 347 | |
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| 348 | |
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| 349 | |
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| 350 | |
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| 351 | |
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| 352 | |
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| 353 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>0L</i></font> |
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| 354 | |
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| 355 | </h4> |
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| 356 | |
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| 357 | |
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| 358 | |
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| 359 | <a name="#_computegrid_keyword_YMAXMESH"></a> |
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| 360 | <h4>YMAXMESH |
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| 361 | |
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| 362 | |
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| 363 | |
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| 364 | |
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| 365 | |
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| 366 | |
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| 367 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>jpjglo-1</i></font> |
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| 368 | |
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| 369 | </h4> |
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| 370 | |
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| 371 | |
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| 372 | |
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| 373 | <a name="#_computegrid_keyword_ZMINMESH"></a> |
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| 374 | <h4>ZMINMESH |
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| 375 | |
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| 376 | |
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| 377 | |
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| 378 | |
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| 379 | |
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| 380 | |
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| 381 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>0L</i></font> |
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| 382 | |
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| 383 | </h4> |
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| 384 | |
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| 385 | |
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| 386 | to define the common variables i[xyz]minmesh |
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| 387 | used to define the grid only in a zoomed part of the original |
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| 388 | grid. max value is [XYZ]MAXMESH |
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| 389 | |
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| 390 | |
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| 391 | <a name="#_computegrid_keyword_ZMAXMESH"></a> |
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| 392 | <h4>ZMAXMESH |
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| 393 | |
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| 394 | |
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| 395 | |
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| 396 | |
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| 397 | |
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| 398 | |
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| 399 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>jpkglo-1</i></font> |
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| 400 | |
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| 401 | </h4> |
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| 402 | |
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| 403 | |
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| 404 | to define the common variables i[xyz]maxmesh |
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| 405 | used to define the grid only in a zoomed part of the original |
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| 406 | grid. max value is jp[ijk]glo-1. |
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| 407 | if [XYZ]MAXMESH is negative, then we define i[xyz]maxmesh as |
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| 408 | jp[ijk]glo - 1 + [XYZ]MAXMESH instead of [XYZ]MAXMESH |
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| 409 | |
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| 410 | |
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| 411 | <a name="#_computegrid_keyword_ONEARTH"></a> |
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| 412 | <h4>ONEARTH |
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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 | |
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| 419 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i> key_onearth</i></font> |
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| 420 | |
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| 421 | </h4> |
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| 422 | |
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| 423 | |
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| 424 | = 0 or 1 to force the manual definition of |
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| 425 | key_onearth (to specify if the data are on earth -> use longitude |
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| 426 | /latitude etc...). |
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| 427 | note that ONEARTH = 0 forces PERIODIC = 0, SHIFT = 0, |
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| 428 | and is cancelling GLAMBOUNDARY |
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| 429 | |
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| 430 | |
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| 431 | <a name="#_computegrid_keyword_PERIODIC"></a> |
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| 432 | <h4>PERIODIC |
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| 433 | |
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| 434 | |
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| 435 | |
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| 436 | |
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| 437 | |
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| 438 | |
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| 439 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>key_periodic is automatically computed by using the first line of glamt</i></font> |
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| 440 | |
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| 441 | </h4> |
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| 442 | |
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| 443 | |
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| 444 | = 0 or 1 to force the manual definition of key_periodic. |
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| 445 | |
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| 446 | |
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| 447 | <a name="#_computegrid_keyword_PLAIN"></a> |
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| 448 | <h4>PLAIN |
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| 449 | |
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| 450 | |
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| 451 | |
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| 452 | |
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| 453 | |
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| 454 | |
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| 455 | |
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| 456 | |
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| 457 | </h4> |
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| 458 | |
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| 459 | force PERIODIC = 0, SHIFT = 0, STRIDE = [1, 1, 1] and |
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| 460 | suppress the automatic redefinition of the domain in case of |
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| 461 | x periodicity overlap, y periodicity overlap (ORCA type only) |
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| 462 | and mask border to 0. |
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| 463 | |
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| 464 | |
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| 465 | <a name="#_computegrid_keyword_SHIFT"></a> |
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| 466 | <h4>SHIFT |
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| 467 | |
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| 468 | |
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| 469 | |
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| 470 | |
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| 471 | |
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| 472 | |
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| 473 | |
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| 474 | |
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| 475 | </h4> |
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| 476 | |
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| 477 | = scalar to force the manual definition of key_shift. By |
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| 478 | default, key_shift is automatically computed according to |
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| 479 | glamboundary (when defined) by using the FIRST LINE of glamt. if |
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| 480 | key_periodic=0 then in any case key_shift = 0. |
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| 481 | |
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| 482 | |
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| 483 | <a name="#_computegrid_keyword_STRIDE"></a> |
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| 484 | <h4>STRIDE |
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| 485 | |
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| 486 | |
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| 487 | |
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| 488 | |
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| 489 | |
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| 490 | |
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| 491 | <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>[1, 1, 1]</i></font> |
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| 492 | |
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| 493 | </h4> |
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| 494 | |
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| 495 | a 3 elements vector to specify the stride in x, y, z |
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| 496 | direction. The resulting value |
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| 497 | will be stored in the common (cm_4mesh) variable key_stride |
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| 498 | |
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| 499 | |
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| 500 | <a name="#_computegrid_keyword_FULLCGRID"></a> |
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| 501 | <h4>FULLCGRID |
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| 502 | |
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| 503 | |
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| 504 | |
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| 505 | |
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| 506 | |
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| 507 | |
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| 508 | |
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| 509 | |
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| 510 | </h4> |
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| 511 | |
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| 512 | activate to specify that you want to compute |
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| 513 | all the parameters of a C grid. Computation of glam[uv], |
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| 514 | gphi[uv], e1[uvf], e2[uvf], [uv]maskred and fmaskred[xy] |
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| 515 | will be add to the default computations |
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| 516 | |
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| 517 | |
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| 518 | <a name="#_computegrid_keyword_XYINDEX"></a> |
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| 519 | <h4>XYINDEX |
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| 520 | |
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| 521 | |
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| 522 | |
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| 523 | |
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| 524 | |
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| 525 | |
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| 526 | |
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| 527 | |
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| 528 | </h4> |
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| 529 | |
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| 530 | activate to specify that the horizontal grid should |
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| 531 | be simply defined by using the index of the points |
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| 532 | (xaxis = findgen(nx) and yaxis = findgen(ny)) |
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| 533 | using this keyword forces key_onearth=0 |
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| 534 | |
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| 535 | |
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| 536 | <a name="#_computegrid_keyword_FBASE2TBASE"></a> |
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| 537 | <h4>FBASE2TBASE |
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| 538 | |
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| 539 | |
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| 540 | |
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| 541 | |
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| 542 | |
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| 543 | |
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| 544 | |
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| 545 | |
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| 546 | </h4> |
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| 547 | |
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| 548 | |
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| 549 | |
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| 550 | |
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| 551 | <a name="#_computegrid_keyword_STRCALLING"></a> |
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| 552 | <h4>STRCALLING |
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| 553 | |
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| 554 | |
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| 555 | |
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| 556 | |
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| 557 | |
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| 558 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>string</i></font> |
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| 559 | |
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| 560 | |
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| 561 | </h4> |
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| 562 | |
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| 563 | |
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| 564 | a string containing the calling command used to |
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| 565 | call computegrid (this is used by xxx.pro) |
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| 566 | |
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| 567 | |
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| 568 | |
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| 569 | |
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| 570 | <a name="#_computegrid_keyword__extra"></a> |
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| 571 | <h4>_extra |
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| 572 | |
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| 573 | |
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| 574 | |
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| 575 | |
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| 576 | |
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| 577 | |
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| 578 | |
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| 579 | |
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| 580 | </h4> |
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| 581 | |
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| 582 | used to pass your keywords to the created function. |
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| 583 | |
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| 584 | |
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| 585 | |
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| 586 | |
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| 587 | |
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| 588 | <h3>Version history</h3> |
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| 589 | |
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| 590 | <h4>Version</h4> $Id: computegrid.pro 157 2006-08-21 09:01:50Z navarro $ |
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| 591 | |
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| 592 | <h4>History</h4> Sebastien Masson (smasson@lodyc.jussieu.fr) |
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| 593 | 2000-04-20 |
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| 594 | Sept 2004, several bug fixs to suit C grid type... |
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| 595 | Aug 2005, rewritte almost everything... |
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| 596 | |
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| 597 | |
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| 598 | |
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| 599 | <h3>Known issues</h3> |
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| 600 | |
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| 601 | |
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| 602 | |
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| 603 | <h4>Restrictions</h4> if the grid has x/y periodicity orverlap and/or if |
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| 604 | the mask has 0 everywhere at the border (like a close sea) and |
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| 605 | if (we did not activate /plain and xminmesh, xmaxmesh, yminmesh, |
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| 606 | ymaxmesh keywords are defined to their default values), we redefine |
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| 607 | xminmesh, xmaxmesh, yminmesh, ymaxmesh in order to reove the |
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| 608 | overlapping part and/or to open the domain (avoid ti be forced |
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| 609 | to use cell_fill = 1). |
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| 610 | |
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| 611 | FUV points definition... |
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| 612 | |
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| 613 | |
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| 614 | <h3>Other attributes</h3> |
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| 615 | |
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| 616 | |
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| 617 | <h4>Uses routines</h4> cm_4mesh cm_4data cm_4cal |
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| 618 | |
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| 619 | |
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| 620 | |
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| 621 | |
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| 622 | |
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| 623 | <font size="-3"><p> </p></font> |
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| 624 | <hr size="1" color="#CCCCCC"/> |
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| 625 | |
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| 626 | |
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| 627 | |
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| 628 | |
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| 629 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0 on Tue Aug 29 14:49:11 2006.</font></p> |
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| 630 | |
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| 631 | </body> |
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| 632 | </html> |
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