How to Collocate Landsat 8 Images

[marpet]

If it is not caused by the last ‘.’ as Andreas already mentioned it could also happen because of this known bug:
[SNAP-662] Collocation creates wrong valid pixel expressions in certain cases

It is also mentioned here:

Collocation problem

Unfortunately, this is a known issue (SNAP-662). You can fix this by removing the valid-pixel expression from the bands, if you don’t need it. or you can update the expressions. In your case, you need to replace ‘c2rcc_flags_S3.Valid_PE_S3’ by ‘c2rcc_flags_S3.Valid_PE’ And for the other flags accordingly. You can change the valid expression as follows: nodes = result.getRasterDataNodes() for n in nodes validPixelExpression = n.getValidPixelExpression() …