[GRASS-dev] speed of r.regression.multi

[Paulo van Breugel]

Hi,

Is it correct that the time it takes to run r.regression.multi depends 
on the region settings (i.e., total number of raster cells in the 
region), and is not influenced by the number of NULL values in the raster?

I am asking because I though I could speed up calculations when masking 
out part area (using a mask based on x random points), but perhaps that 
doesn't make sense?

Cheers

Paulo
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