[GRASS-user] i.maxlik can't read signature from i.class

[Cesar Augusto Ramírez Franco]

Hello everyone,

I've been trying to do a supervised classification from landsat8 imagery
using i.class and then i.maxlik, but I'm getting an error when running
i.maxlik saying it can't read the signature file.

I tested my procedure on the NC sample dataset and I'm getting the same
error, I'm using Grass 6.4.2 on Debian Wheezy, installed from the debian
repo. Here's the command set:

#Display RGB enhanced map
i.landsat.rgb blue=lsat7_2000_10 green=lsat7_2000_20 red=lsat7_2000_30
d.rgb blue=lsat7_2000_10 green=lsat7_2000_20 red=lsat7_2000_30
#"Real color" map
r.composite red=lsat7_2000_30 green=lsat7_2000_20 blue=lsat7_2000_10
output=lsat7_2000_RGB
#Group images to process
i.group group=lsat7_2000_RGB subgroup=lsat7_2000_RGB
input=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30
#Unsupervised classification
i.cluster group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=clustlsat7
classes=20 report=rep_clust_lsat7.txt
i.maxlik group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=clustlsat7
 class=lsat7_classes reject=lsat7_classes_rej
#Supervised classification
i.class map=lsat7_2000_RGB group=lsat7_2000_RGB subgroup=lsat7_2000_RGB
outsig=classlsat7
i.maxlik group=lsat7_2000_RGB subgroup=lsat7_2000_RGB sigfile=classlsat7
class=lsat7_class_sup

Here I get the error in which i.maxlik can't read the signature file
created by i.class (classlsat7) but read the one created by i.cluster
flawlessly

This is what I'm selecting on the i.class monitor, I named it vegetation:
[image: Imagen integrada 1]

And the contents of the classlsat7 signature file are the following:

> ​
>
#

#vegetation

166

​
>
>
Am I doing something wrong or is it some kind of bug?

-- 
*César Augusto Ramírez Franco*
Laboratorio de Sistemas Complejos Naturales
Escuela de Geociencias
Facultad de Ciencias
Universidad Nacional de Colombia - Sede Medellín
Teléfono: (57-4) 430 9369 - 301 389 5607
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20131126/10c9edba/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: i.class.png
Type: image/png
Size: 50640 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20131126/10c9edba/attachment-0001.png>