[petsc-users] Output non-zero structure of a matrix

Matthew Knepley knepley at gmail.com
Wed Jul 22 06:37:34 CDT 2015

On Wed, Jul 22, 2015 at 2:13 AM, Justin Chang <jychang48 at gmail.com> wrote:

> Hi everyone,
> How do I print out the non-zero structure of a Matrix? Preferably to an
> image file (e.g., png, eps, etc).

I think Barry has some support for AfterImage which I do not understand.

However, there is a quick and dirty way. You can view the matrix

  -mat_view draw -draw_pause -1

and then screen capture the window. This is how I made all my sparse



> Thanks,
> Justin

What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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