How can I export my band math result out as a tif or any image?

s2tbx
#1

Dear all,
I have tried to build a ratio index named RBI with the band math tool using L2A S2A data. The RBI was successfully created and correctly displayed in Snap. And I resampled the L2A to 10m, and subset the many of its needless bands and export to a Geotiff image. All the kept bands were correctly output , but my RBI wasn’t output at all.
Anyone ever face this problem?
Looking forward to your help.
Thanks.

#2

if you apply band maths you need to uncheck the “virtual band” option so SNAP creates an actual product.
Then save your product (File > Save) and it will be included in subsequent outputs.

2 Likes
Issue while exporting NDSI as .tif
#3

Thank you very much. But how should I un check the virtual bands? c.z. the band math require a target file and it is the parent file? Or should I rename one? Let me try.

#4

Have you seen the Tutorials?
http://step.esa.int/main/doc/tutorials/
There is one dedicated for Band Math:

#5

Thanks. Though I can’t watch the tutorial , problem is solved now. By uncheck the “virtual (save expression only, don’t store data)” on the bandmath interface.
:slight_smile:

#6

I was having the same problem. Thank you so much!! Such an easy fix but easy to miss.