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<font style="font-size: 10pt;" size="2"><span style="font-size: 10pt;">Hi,<br>
May be you can use gdal_dem with PostGis Raster reader (mode 2) if you want create derived product from DEM? <a href="https://2010email.nrcan.gc.ca/owa/redir.aspx?C=-EdD1avowkuk-xNknPJh7vf0XZ4yDs8IU1FdN1H6-qc2Bi_IDzSbhP_TpQco-VGan_mlyx-0M6M.&URL=http%3a%2f%2fwww.gdal.org%2fgdaldem.html" target="_blank">http://www.gdal.org/gdaldem.html</a><br>
<br>
It is working very well with gdal 1.8. Moreover you can extrapolate values along the borders of the tiles.<br>
<br>If you </span></font><font style="font-size: 10pt;" size="2"><span style="font-size: 10pt;"> just </span></font><font style="font-size: 10pt;" size="2"><span style="font-size: 10pt;">want</span></font> merging adjacent rasters you can use gdal_translate<font style="font-size: 10pt;" size="2"><span style="font-size: 10pt;"> with PostGis Raster reader (mode 2)</span></font>.<br><font style="font-size: 10pt;" size="2"><span style="font-size: 10pt;"><br>
David</span></font><br><br><div><div id="SkyDrivePlaceholder"></div>> Date: Fri, 25 May 2012 19:08:23 +0200<br>> From: cavallini@faunalia.it<br>> To: postgis-users@postgis.refractions.net<br>> Subject: Re: [postgis-users] ST_Aspect artifacts?<br>> <br>> Il 25/05/2012 19:02, Pierre Racine ha scritto:<br>> > Yeah. ST_Union is good for unioning overlapping rasters (e.g. computing the mean of a temperature series) but not for merging adjacent rasters. We will have to write something else for that.<br>> ><br>> ok. again, thanks for clarifying.<br>> all the best.<br>> <br>> -- <br>> Paolo Cavallini<br>> See: http://www.faunalia.it/pc<br>> <br>> _______________________________________________<br>> postgis-users mailing list<br>> postgis-users@postgis.refractions.net<br>> http://postgis.refractions.net/mailman/listinfo/postgis-users<br></div> </div></body>
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