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40 lines
1.8 KiB
HTML
40 lines
1.8 KiB
HTML
<html>
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<head><link rel="stylesheet" type="text/css" href="help.css" /></head>
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<body>
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<h1 class='module'>Transect through polygon shapefile</h1>
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<div class='author'>Copyrights (c) 2009 Johan Van de Wauw</div>
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<div class='description'>Transect for lines and polygon shapefiles<br/>
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<br/>
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The goal of this module is to create a transect along a line through a polygon map.<br/>
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Eg<br/>
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<br/>
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|____ST1_____!_ST2_!__ST1__!_______ST#_____|<br/>
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<br/>
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(Soil type 1 etc...)<br/>
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<br/>
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This is done by creating a table with the ID of each line, the distance <br/>
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to the starting point and the different transects:<br/>
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<br/>
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<pre>| line_id | start | end | code/field |<br/>
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| 0 | 0 | 124 | ST1 |<br/>
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| 0 | 124 | 300 | ST2 |<br/>
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| 0 | 300 | 1223 | ST1 |<br/>
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| 0 | 1223 | 2504 | ST3 |<br/>
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| 1 | 0 | 200 | ST4 |<br/>
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| ... | ... | ... | ... |</pre><br/>
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<br/>
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<br/>
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The module requires an input shape with all the line transects [Transect_Line] <br/>
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and a polygon theme [Theme]. You also have to select which field you want to have in <br/>
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the resulting table [Transect_Result]. This can be an ID of the polygon theme if you <br/>
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want to link the tables later on, or any other field [Theme_Field].<br/>
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</div>
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<h2>Parameters</h2>
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<dl class='parameters'>
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<dt>Line Transect(s) <div class='type'>Input Shapes</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Theme <div class='type'>Input Shapes</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Theme Field <div class='type'>Table field</div></dt><dd> <div class='constraints'></div></dd>
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<dt>Result table <div class='type'>Output Table</div></dt><dd> <div class='constraints'></div></dd>
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</dl>
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</body></html>
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