[postgis-devel] [WKT Raster] Regular blocking restrictions
Pierre.Racine at sbf.ulaval.ca
Wed Mar 18 11:01:15 PDT 2009
>4. Portions of tiles that extend behond the raster extent are NODATA
>The definition of this restriction is clear, but it's unclear how it
>influences some of RT_* functions. For instance, what RT_Width and RT_Height
>should return for such tiles? Also, what should be the accumulated width/height
>for the whole coverage?
Only analysis functions (working at the pixel level) should by default (and optionally) take the nodata values into account. RT_Width and RT_Height should not, and hence returns the real width and height of a tile.
I have no clue on the other issues.
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