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I am using GRASS GIS 7.2.0. The intent is to clip my DEM raster. I have searched available raster tools but didn't found anything allow me to clip my raster using polygon vector or interactively.

How would I clip my raster in GRASS GIS? Is there any plugin or tool to do the job?

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  • grasswiki.osgeo.org/wiki/Cropping_maps
    – alphabetasoup
    Jan 30, 2017 at 4:42
  • @Ben your link is claer about the istructions "Make boundary into mask using r.mask then copy raster source to new map (g.copy). All cells outside of the mask will be omitted from the new copy." but in my case I can see that the behavior is not the expected, it is copying everything. Wrong or new behavior of g.copy? I am running GRASS GIS 7.2.0 (64bit) on windows 7
    – Marco
    Sep 26, 2017 at 13:30

2 Answers 2

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For cropping a raster map according to a vector map, you can use r.mask which also supports vector maps.

Update 2018: Meanwhile there are v.clip and a new Addon available: r.clip

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  • "r.mask - Creates a MASK for limiting raster operation, Areas inside the MASK are not hidden; areas outside the MASK will be ignored until the MASK file is removed". I am intending to produce separate clipped raster instead. For the purpose r.mask doesn't provide the solution.
    – Rex
    Mar 14, 2018 at 5:43
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I know it's late, but for others who have the same question. Please try this:

# limit your computational region to polygon_vector
r.mask vect=polygon_vector

# clip big_raster to polygon_vector (MASK set by r.mask above)
r.mapcalc ex=clipped_raster=big_raster

# export
r.out.gdal input=big_raster output=clipped_raster.tif
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