[postgis-devel] PostGIS Raster ST_Resample dimension issue

[dustymugs]

On 11/04/2011 02:25 PM, ServerAlex wrote:
> Hello everyone,
>
> I'm currently trying ST_Resample to resample a raster given in UTM
> projection to WGS84. Basically there are many 10x10 raster blocks in
> WGS84 in the database. I query them , transform them to UTM for
> geospatial interpolation things that result in an UTM raster with
> different height and weight than the original WGS84 raster. Now when I
> transform it back via ST_Resample using the original 10x10 raster
> blocks as reference it will result in WGS84 rasters that are no longer
> 10x10 in dimension. I've had a look at the PostGIS source code and
> noticed that the output dimensions of ST_Resample are calculated
> automatically. This is confusing to me as it totally ignores the
> dimensions of the reference raster. Is this the wanted behaviour? Can
> you adjust the API or add a different function that respects the
> reference raster dimensions?
>
> Regards,
> Alex

Hey Alex,

Can you file a bug report for this?  None of the ST_Resample variations 
support specifying the width and height of the resampled raster.  Adding 
the requested width and height parameters shouldn't take too much work.

-bborie