[petsc-users] Coloring of -mat_view draw

[Justin Chang]

Hi all,

So i used the following command-line options to view the non-zero structure
of my assembled matrix:

-mat_view draw -draw_pause -1

And I got an image filled with cyan squares and dots. However, if I
right-click on the image a couple times, I now get cyan, blue, and red
squares. What do the different colors mean? Attached are the images of the
two cases:

Thanks,
Justin
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