Hello,
I need to work with a dem raster at the pixel scale but there are few functions to access them. Maybe I forgot something but, if we can have a value crossing a point with raster using st_value, we can't access the pixel geometry directly from a point. The only way I found was first to use St_PixelAsPolygons to access pixel geometry (for relevant tiles) and then intersects resulting geometries with original points but this method costs very much. Anyone have an idea to increase performances ? Hugues.
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