Export from SNAP to QGIS

#1

Hi all,

I am trying to import my supervised classification from SNAP to QGIS. I exported the file in GeoTIFF format in SNAP and opened it in QGIS. But the raster is all red… what are the steps I am missing?

(Also, could you tell me if a KNN classification is pertinent for land use classification (my classes are: crop, grassland, forest, shrubland etct). Of all algorithms, it seems to be giving me the most accurate classification; but I see RF and ML being used more often…)

Thanks in advance,
Cheers

#2

maybe the color range does not fit to the data distribution? What are the min and max values used in QGIS to display the raster?

#3

That is found in the raster histogram right? If so, then band 1 has min=2.002, max=10.989 and band 2 has min=1, max=1.

#4

band 1 is the one with the classification. As it ranges between 2 and 11 there must be values. Have you made sure that the colors in QGIS cover this range? You can set it to “unique values” instead of a stretched color ramp so that each value gets its own color.

#5

It worked! Thanks a lot :slight_smile: