Nathaniel Iwuchukwu: > i am getting an error when i run the i.gensigset on > the training map i created and the trainig map is > blank after i perform vector to raster. > this is what i typed and the result: > > GRASS 6.4.0RC5 (sis):~/Desktop > i.gensigset > trainingmap=traingis group=sislabgp subgroup=sislabsub > signaturefile=sislab.sig > Finding training classes... > 100% > ERROR: Training map has no classes > does snyone have any clue why i don't have classes in > my training map? > > what should i do. thanks
Some pointers: - check the training map again (it's a raster, right?) - what does "r.cats traingis" say? - check that the raster maps for which you want to create signatures, do not contain NULL-pixels at your defined training areas ( I remember having a problem with this). - check that your defined areas in the training map are not too small (e.g. they should be >17pix) Nikos _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
