[raster] Coverage topology broken by ST_Rescale
|Reported by:||strk||Owned by:||dustymugs|
As described here: http://lists.osgeo.org/pipermail/postgis-devel/2014-July/024337.html
The ST_Rescale function breaks coverage topology introducing gaps between a tile and another whereas ST_Resize does not.
The test dataset is here: http://www.naturalearthdata.com/downloads/10m-raster-data/10m-cross-blend-hypso/
Imported with this command:
raster2pgsql -C -I -s 4326 -Y -t '256x256' HYP_LR.tif hyp_lr
It looks like a bug for ST_Rescale to not maintain topology as the manual says that the tile extent could be slightly modified to accomodate for subpixel scaling.
I hadn't tested with older versions