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

[Barry Smith]

> On Feb 9, 2023, at 3:38 AM, Zongze Yang <yangzongze at gmail.com> wrote:
> 
> Hi, Barry
> 
> Thanks for the tip.
> 
> One more question: how can I save the log (draw_lg) figure by using `draw:image:joe.ppm`?

  I am not sure what you mean. 

>> -ksp_monitor_solution draw:image:joe.ppm

  Will create a directory called joe with a set of files in it. Each file contains one solution during the iterative process.

 Barry


> 
> Thanks.
> Zongze
> 
> Barry Smith <bsmith at petsc.dev <mailto: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 <mailto: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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