[petsc-users] Save images of ksp_monitor and ksp_view_eigenvaluses with user defined names

[Zongze Yang]

Hi, Barry

Thanks for the tip.

One more question: how can I save the log (draw_lg) figure by using
`draw:image:joe.ppm`?

Thanks.
Zongze

Barry Smith <bsmith at petsc.dev> 于2023年2月9日周四 05:35写道：

>
>    It cannot be done using the default X windows monitor and -draw_save
> because there is no way to distinguish the files for each sub window images.
>
>    However, there is an alternative.
>
>    -ksp_view_eigenvalues draw:image:jeff.ppm -viewer_view
> -ksp_monitor_solution draw:image:joe.ppm
>
>   This alternative only supports .ppm files (so you may need to call a
> converter on the result) and does put each image in a separate file in its
> own named directory, for example, joe/joe_0.ppm  but at least it allows you
> to have different named files. Of course you can also just run your code
> twice with two different options.
>
>    Unfortunately there is a bug in the KSP eigenmonitor viewing that I had
> to fix to get this to work so you'll need to checkout the
> *barry/2023-02-08/fix-ksp-monitor-eigenvalues-draw *branch of PETSc to
> use the option I suggest.
>
>   Barry
>
>
>
>
> On Feb 8, 2023, at 5:09 AM, Zongze Yang <yangzongze at gmail.com> wrote:
>
> Hi, PETSc group,
>
> I was trying to save figures of the residual and eigenvalues with
> different names but not default names.
>
> The default name is used when I use `-draw_save .png`. All images are
> saved.
> ```
> python test.py -N 16 -test1_ksp_type gmres -test1_pc_type jacobi
> -test1_ksp_view_eigenvalues draw -test1_ksp_monitor draw::draw_lg
> -draw_save .png
> ```
> But when I use `-draw_save abc.png`, only the figure of eigenvalues is
> saved.
> ```
> python test.py -N 16 -test1_ksp_type gmres -test1_pc_type jacobi
> -test1_ksp_view_eigenvalues draw -test1_ksp_monitor draw::draw_lg
> -draw_save .png
> ```
>
>  How can I add the command line options, to specify different names for
> those images?
>
> Thanks,
> Zongze
>
>
>
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