g.gui.iclass: cannot display analysis results because of "No graphics device selected"

[mlennert]

Using g.gui.iclass in both trunk and 70release, I do the following:

• load group and subgroup
• load vector training areas
• "Run analysis"

I don't see any of the analysis maps (one per class) in the lower window, and I get the following error messages:

Data error preparing signatures: value (388) > num of cats
(256)
La commande 'd.rast map=eau_15961.0' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.
Data error preparing signatures: value (602) > num of cats
(256)
La commande 'd.rast map=veg_haute_15961.0' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.
Data error preparing signatures: value (394) > num of cats
(256)
La commande 'd.rast map=sol_nu_15961.0' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.
Data error preparing signatures: value (1173) > num of cats
(256)
La commande 'd.rast map=veg_basse_15961.1' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.
Data error preparing signatures: value (853) > num of cats
(256)
La commande 'd.rast map=bati_15961.1' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.
La commande 'd.rast map=pleiades_pan@PERMANENT' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.

What is really strange is that when I don't load the group and training areas, but only display an image in the upper or lower display window, I also get:

La commande 'd.rast map=pleiades_pan@PERMANENT' a échoué
Détails :  No graphics device selected. Use d.mon to select
graphics device.

but the image is displayed.

Using i.gensig and i.maxlik I can create valid signatures and a classification.

[annakrat]

I can't reproduce it. It seems that No graphics device selected and Data error preparing signatures are different problems. What kind of vector are you loading, the one you exported before from g.gui.iclass? What kind of data do you have in the group, I think, it can currently handle just 256 cats.

[martinl]

No activity last 22 months, closing, feel free to reopen if needed.

[mlennert]

I'm currently getting a segfault trying to load vector training data, so I can't test. Need to rebuild to see if this is a local issue, but won't do that until after foss4g.