I am trying to extract values from a raster using a point shapefile, but I am getting NULL values. I think that NULL values are obtained because the Coordinate Reference System (CRS) are not the same for the raster and the point shapefile. However, they are ok when "on the fly reprojection" is activated on the properties of the project. Do you know if different CRS could be the responsible of the NULL values? If the answer is Yes, how could I change the CRS? I have tried to change it in the properties of the layer, but they don't overlap even when they have the same CRS!
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