> 1. To know which Pixeltype I had to use, I tried to use st_bandpixeltype which > told me my pixels were 32BSI type but my results using this type are 0 or 1 > and if > I try another type like 32BF, results seems to be more useful. Does someone > have an explanation about this weird difference ? What is the unit used by > st_slope ?
The results are in radian so rounded to 0 or 1 when the pixel type is integer. > 2. My raster is a tiled one and as you can see on both pictures, ST_Slope > gives no > results for pixels located at the border of each tile. I can understand it is > impossible to find the slope for the pixels which make the border of the > raster, > but is there not a way to have complete results for the tile in the middle of > the > raster and thus use the neighboring tiles. Not yet. The only way is to load the raster untiled or to ST_Union them which might be slow. Pierre _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
