Following is an screen-shot where ASTER DEM raster layer has been overlaid by a road linestring vector layer. I want to extract those DEM pixels which are lying exactly beneath the linestrings. I want to assign the corresponding elevation values to each and every linestring. Which PostGIS function should be used or any other approach? PostGIS ST_Intersection function for Raster Layers is not useful.
أكثر...
أكثر...