Hi all. I was trying to plot 2D- number density map of a system . I generated the .xpm file using gmx densmap command. After getting the the .xpm file, I used gmx xpm2ps command to generate .eps file. But its showing error :

"Assertion failed:

Condition: mat.size() == mat2.size ()

Combined matrix write requires matrices of the same size."

Can anyone explain me what exactly this xpm file is and what possibly went wrong in my work.

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