Dear list,
I am trying to to do a maximum liklihood supervised classification and have problems selecting the training sites.
I grouped my necessary images:
i.group group=TIME_SLOT subgroup=DAY input=200601161230_europe_ir120,200601161230_europe_vis006,200601161230_europe_ir016
Made an RGB images to find my most wanted features and now try to digitize with i.class the training sites. The interactive tool allows me to digitize a ploygon but when I am trying to enter the the Analyze Region Menue I get an error message:
prepare signature: data error (click mouse to continue).
What could I have done wrong? The manual is very clear about all steps.
Kind regards,
Anja