http://wiki.mohid.com/index.php?title=XYZ_points&feed=atom&action=historyXYZ points - Revision history2024-03-29T15:27:20ZRevision history for this page on the wikiMediaWiki 1.28.0http://wiki.mohid.com/index.php?title=XYZ_points&diff=960&oldid=prevGuillaume: 1 revision2008-12-03T10:39:09Z<p>1 revision</p>
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</td></tr></table>Guillaumehttp://wiki.mohid.com/index.php?title=XYZ_points&diff=959&oldid=prev192.168.20.148: /* XYZ Points file */2007-12-02T14:43:09Z<p><span dir="auto"><span class="autocomment">XYZ Points file</span></span></p>
<p><b>New page</b></p><div>== Overview ==<br />
XYZ points are use do define discrete geo-referenced information. This information is stored associating X and Y coordinates to an attribute. Examples of applications of these items are: bathymetric or topographic surveys, water quality analysis results, etc.<br />
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== XYZ Points file ==<br />
XYZ Points items are stored in an ASCII text file. The default extension for XYZ Points files in [[MohidGIS]] is '''*.xyz'''. This file is organized in [[blocks]], each containing the coordinates for a certain attribute. One block is defined by the following keywords: '''<begin_xyz>''' and '''<end_xyz>'''. Note that these keywords are case sensitive. One file can contain an infinite number of blocks. Inside each block there at least 3 columns. The left column represents the XX coordinates of the polygon vertices and the right one to the YY coordinates of the polygon vertices. The third column contains the attribute value. A fourth column can be optionally included and it is handled as a character string which can also be used as a legend for each point.<br />
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== Example == <br />
=== Three columns ===<br />
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<begin_xyz><br />
-9.138328 38.737320 292. <br />
<end_xyz><br />
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=== Four columns ===<br />
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<begin_xyz><br />
-9.138328 38.737320 292. MARETEC - IST (Lisbon)<br />
<end_xyz><br />
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[[Category:Input Data Formats]]</div>192.168.20.148