Re: [GRASS-user] Spectral Unmixing

Hi, there was recently some question about spectral unmixing here in the list. If you didn't modify the source code of the unmixing model to fit Grass 7 it won't work. Spectral unmixing was written by Markus as part of his diploma thesis, is now some years old and is based on Grass 5.something,

Re: [GRASS-user] i.maxlik and 'Signature 1 is not valid (ill-conditioned) - ignored'

On Tue, Jul 28, 2009 at 12:18 PM, Thomas Becker wrote: >> Hi listers, >> >> I am using GRASS64 on Debian Lenny and I am getting warnings about >> ill-conditioned signatures. As usual the sigfiles are created by i.cluster >> and I do not know why the first signatu

[GRASS-user] i.maxlik and 'Signature 1 is not valid (ill-conditioned) - ignored'

Hi listers, I am using GRASS64 on Debian Lenny and I am getting warnings about ill-conditioned signatures. As usual the sigfiles are created by i.cluster and I do not know why the first signature is ignored. I googled the warning but haven't found a solution or workaround for this. Cheers, Tho

[GRASS-user] Subtraction of raster maps

Hi, I know it is pretty standard to subtract to maps from each other and I do have the command for r.mapcalc, but it is not doing what I expect. I have a landcover map and a map wit buildings. Both are raster maps. Now I want to get rid of the areas in the landcover map that are covered by bui