Hey Hamish, Yeah, I know about that module but im not sure if you can specify the region.
Usually I identify visually a spot in my raster where a certain algorithm needs to be run. mostly holes that need to be filled with r.fillnulls. So I don't need it for the hole raster. Just for that spot. So preserving the raster's resolution makes sense. Plus its trivial to change it the res flag of 'g.region'. If you have to do that more than three times, its too time consuming to querry the edges, and then plug them in g.region What I had in mind is more like a functionality like the 'zoomIn' button, but instead of zooming in, it should change the computational extents of the rectangle you draw. Nikos
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