[GRASS-dev] i.maxlik

Markus Neteler neteler at osgeo.org
Mon May 20 14:47:27 PDT 2013

(updating subject line)

On Mon, May 20, 2013 at 9:10 PM, Dr Colin Hindmarch
<colinhindmarch at talktalk.net> wrote:
> Hi,
> Processing PNG files in i.maxlik (Windows-based GRASS), I got (and keep
> getting) the following message:
> "(Mon May 20 09:22:53 2013)
> i.maxlik group=sattar at user1 subgroup=subgroup sigfile=unsupervised_signature
> class=unsupervised_map
> ERROR: Unable to open signature file <unsupervised_signature>
> (Mon May 20 09:22:53 2013) Command finished (0 sec)"
> I am trying to produce an unsupervised classification, but keep getting hung
> up in 'i.maxlik'. I have tried reloading the latest version of Grass along
> with the 'visual' software, but no luck - I seem to be stuck! I can see from
> the email exchanges that you are all very busy, but I would be grateful if
> someone could help me to move on.

Did you generate beforehand the signature file with i.gensig?

Perhaps this page is useful for you:


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