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  1. Drape lines on a DEM with PostGIS

    This article gives a few SQL commands to drape 2D geometries on a DEM (Digital Elevation Model), in order to obtain 3D geometries. We use PostGIS 2, and its rasters support especially.

    Load your DEM

    Assuming you have a DEM compatible with GDAL, you can easily load the raster into …

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