[GRASS-user] mask "around" a linear feature

[Robert Kuszinger]

Hello!

We have a linear feature of ~60km which is a future path of a road having
~400m in size and being quite curved.


I'd like to create a mask for raster operations that fits this shape.
Hull creates a convex shape which is hice but still have many "empty" space
involved. This is sparse lidar data, anyway.

Is there a techique to create such a raster mask/map?

Pure rasterization won't work since it has holes (see also vectorized
coverage at 10m resolution, zoomed into a "hole".

I'd need something like a *"concave hull"* function :)

thanks
Robert



[image: Szövegközi kép 3][image: Szövegközi kép 2]
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