I am trying to use the Spectral Unmixing feature in SNAP on a S3 subset. I have created a tab separated csv file using python in several different ways. The csv endmember file uploads successfully and the individual endmembers can be seen in the LSU popup window. However, when I click Run, I get error saying “Matrix is Singular”. I am not sure what this means or how to address the problem.
If I create a tab separated csv file with the same data using Excel the LSU tool runs successfully. I am not sure what difference using python is creating.