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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This is great George,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I guess your function works only on a single raster. Would be
nice if it would work on a tiled coverage. In this case you have to compute
edge values by getting values from neighbour tiles. A bit (!!) more
complicated.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Pierre<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
postgis-devel-bounces@postgis.refractions.net
[mailto:postgis-devel-bounces@postgis.refractions.net] <b>On Behalf Of </b>George
Silva<br>
<b>Sent:</b> 28 juillet 2010 21:48<br>
<b>To:</b> PostGIS Development Discussion<br>
<b>Subject:</b> [postgis-devel] Calculating flow direction<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello PostGIS developers,<br>
<br>
I just built a flow direction function for WKT Raster. I know it's not the most
efficient, but looks like it works.<br>
<br>
I would like (if you have the time/interest) to test it and report inconsistent
results.<br>
<br>
I'm working on function for identifying sinks, removing sinks and creating a
accumulated flow raster.<br>
<br>
Your comments are most welcome. The function is the attachment.<br clear=all>
<br>
-- <br>
George R. C. Silva<br>
<br>
Desenvolvimento em GIS<br>
<a href="http://blog.geoprocessamento.net" target="_blank">http://blog.geoprocessamento.net</a><o:p></o:p></p>
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