NAN values after data convertion

s1tbx
#1

Dear all,
I have two features from one image (intensity and coherence). I made a stack from both and then used ‘data convertion in SNAP’:
Data convertion….convert datatype….linear (slope and intercept)

But the problem is that it makes some ‘NAN’ values in my features (in intensity feature is more than coherence ).

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before.PNG.jpg1300×838 237 KB

Figure1. Part of ‘intensity’ feature before conversion.

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after.PNG.jpg1316×874 348 KB

Part of ‘intensity’ feature after conversion (you can see ‘NAN’ values there):

I tried several method but could not get rid off them :expressionless::face_with_raised_eyebrow:. Any help?

NAN values after converting to GLCM
#2

Might be the reason is, you selected int, and you could select float instead,

image

But you said,

So did you give a try?

#3

Thanks for answer. no, I only used unit8 but with all types of ‘scaling’.
Now I tried it with int16 and linear (slope and intercept); it seems to work :slightly_smiling_face:
but really do not know why with unit8, it did not work.

#4

Seemingly it depends on your datatype, as you posted here before,

Source of the post

#5

maybe you just have to remove 0 as nodata value in the band properties after conversion?