<div class="gmail_quote">2011/3/23 Jorge Arévalo <span dir="ltr"><<a href="mailto:jorge.arevalo@deimos-space.com">jorge.arevalo@deimos-space.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
On Wed, Mar 23, 2011 at 4:30 PM, Pierre Racine<br>
<div class="im"><<a href="mailto:Pierre.Racine@sbf.ulaval.ca">Pierre.Racine@sbf.ulaval.ca</a>> wrote:<br>
</div><div class="im">>>Yes, I think it's the best way. A generic ST_AsGDALRaster and several<br>
>>wrappers around it.<br>
><br>
> Was there anything implemented yet? Could Bborie take over? So you could focus on the GDAL driver (and tickets)?<br>
><br>
<br>
</div>rt_raster_dump_as_wktpolygons transform a PostGIS Raster in a GDAL<br>
Raster using VRT driver. This is the closest implemented reference for<br>
Bborie right now, I think.<br>
<br></blockquote><div><br>Hello,<br><br>I filed some additional information in <a href="http://trac.osgeo.org/postgis/ticket/870">#870</a> about rt_raster_dump_as_wktpolygons. It specifically will speed up the dual loops inside of that function, and reduce the number of features created and destroyed.<br>
<br>It would be worth investigating that approach before using the current method as a template of other functions.<br><br>Thanks,<br>David<br></div></div>