[postgis-users] Raster Points in Polygon (was Re: PostGIS Raster for Met Data)

[Bryce L Nordgren]

postgis-users-bounces at postgis.refractions.net wrote on 08/24/2011 03:01:53 
PM:

> I had to modify the coordinates of your raster and your polygon 
> because the 900917 SRID do not exist by default in spatial_ref_sys, 
> but this example returns the x and y coordinates (a well as the 
> point geometry and the value) of every pixels intersecting a polygon.

If I understand this right, SRID 900917 is a custom coordinate system for 
the (i,j) pixel coordinates of the image? Wouldn't this mean that you have 
to have a different SRID for every tile (raster) of the image, since each 
tile starts with (1,1)?

Just checking...
Bryce
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