[GRASS-dev] i.maxlik

[Markus Neteler]

(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:
http://grasswiki.osgeo.org/wiki/Image_classification

Markus