<div dir="ltr">You don't use PostGIS for gaining compression. In fact, PostGIS rasters probably use more space, but you gain faster access to the files, because there are spacial indexes and you can do queries a lot easier with aggregations, overlaying geometries etc, which you cannot do like that or much harder with GDAL. If you want your rasters to be small you can do compression, but at the end of the day you want to be able to find out information from the raster, right?<div>
<br></div><div>Cheers,</div><div>Tim</div></div><div class="gmail_extra"><br clear="all"><div>Tim-Hinnerk Heuer<br><br>Twitter: @geekdenz<br><div>Blog: <a href="http://www.thheuer.com/" target="_blank">http://www.thheuer.com</a></div>
</div>
<br><br><div class="gmail_quote">On 11 January 2013 23:07, laurent <span dir="ltr"><<a href="mailto:lcelati@latitude-geosystems.com" target="_blank">lcelati@latitude-geosystems.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
1/ Is there a real advantage to import raster into postgis db in storage<br>
purposes? Can you give me an indicator evaluating the gain of file size<br>
compared to raw raster files?<br>
<br>
2/ Is there a postgis raster tool for compressing raster cover in order to<br>
compress the size of the dbs?<br>
<br>
3/ Could you explain to me the -R (register) postgis optional parameter ?<br>
What is the interest of this parameter?<br>
<br>
<br>
Thank you to throw light for me?<br>
<br>
Kind regards.<br>
<br>
~IMAGE~<br>
<br>
<br>
<br>
<br>
--<br>
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