Hi Users,
I am re-posting this to see if anyone else may have some suggestions. My thanks to Veronica who suggested checking ‘g.region’ but this appears to be fine. I’ve also tried the same on Grass 7.2.2/7.4 and nightly but all produce the same result.
signature file content:-
Paul J. Shapley MSc CGeog (GIS) FRGS
On 07/06/18 11:00, Paul Shapley wrote:
Hi Users,
I am re-posting this to see if anyone else may have some suggestions. My thanks to Veronica who suggested checking 'g.region' but this appears to be fine. I've also tried the same on Grass 7.2.2/7.4 and nightly but all produce the same result.
signature file content:-
#
#Bare_peat
2667621
60.4424 75.4845 87.2587
716.802
831.829 1086.7
869.829 1105.97 1179.92
0 0 0------------------------------------------------------------------------------------------------------
Original message:-
I have created a signature file in the g.gui.iclass (supervised classification module) and it looks correct in 'preview' and when i inspected the 'sig' file. When the signature is applied using 'i.maxlik' the result is a solid yellow colour as a layer. What could have gone wrong?
Do you only have one class ? Then it is normal that all pixels will be in the same class. You could ask i.maxlik to output the reject map and then define a threshold in that map as a mask to show those areas whose probability of being in the class is sufficiently high.
Moritz