On Fri, Sep 13, 2024 at 2:40 AM Klaij, Christiaan <c.kl...@marin.nl> wrote:
> Thanks Barry, that works fine. Any chance to access the reordered matrix
> behind the plot?
>
You can make it with MatPermute().
Thanks,
Matt
> Chris
>
> ________________________________________
> From: Barry Smith <bsm...@petsc.dev>
> Sent: Tuesday, September 10, 2024 3:09 PM
> To: Klaij, Christiaan
> Cc: petsc-users@mcs.anl.gov
> Subject: Re: [petsc-users] how to visualize the matordering?
>
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>
> You can save the plot in an image file that does not require X. For
> example
>
> -mat_view_ordering draw:image:filename
>
> Several image formats are available.
>
>
> Barry
>
>
> On Sep 10, 2024, at 7:36 AM, Klaij, Christiaan <c.kl...@marin.nl> wrote:
>
> I'm saving a petsc mat to file and loading it into python to make a spy
> plot of its sparsity pattern, so far so good.
>
> Now I would like to compare with a reordened pattern, say rcm. I've notice
> the option -mat_view_ordering draw, but do not have X Windows on this
> machine. What is the recommended way to get the reordened matrix for
> inspection?
>
> Chris
> <image859244.png>
> dr. ir. Christiaan Klaij
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