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Calculate maximum and minimum elevation for a polygon layer from a DEM [duplicate]

I have a polygon layer and would like to know the min and max elevation within each polygon. My elevation layer is a digital elevation model. I'm not quite sure how to extract that information. I am ...
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How to select an area in a raster map that is compared with another raster map? (intersection of two raster maps) [closed]

I have raster map A=elevation values and raster map B=raster with colors (each color represents a polygon boundary. raster map B is created with the use of v.to.rast) I want to select the part of ...