[petsc-users] Problems of Viewing Mat with MATLAB format

[Barry Smith]

   Thanks for reporting this. It is our error. Please find attached the patch that resolves the problem 
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   I have also fixed this in the maint and master branches.

   Barry

> On Sep 6, 2016, at 2:48 AM, Yaoyu Hu <huyaoyu1986 at gmail.com> wrote:
> 
> Hi everyone,
> 
> I want to view a parallel dense Mat with MATLAB format. I use the
> following method.
> 
> ========= Sample codes. =========
> 
> /* Set the name of the Mat.*/
> PetscObjectSetName()
> 
> /* View the Mat. */
> PetscViewerASCIIOpen()
> PetscViewerPushFormat()
> MatView()
> PetscViewerDestroy()
> 
> ====== End of sample codes. =======
> 
> However, after the Mat has been viewed, the MATLAB object?s name is
> not the same with that specified by PetscObjectSetName(). The
> resultant MATLAB file looks like this:
> 
> ========= Sample viewed file in MATLAB format. ==========
> 
> %Mat Object:Mat_ElementLastFaceVelocity 8 MPI processes
> %  type: mpidense
> % Size = 16000 18
> Mat_0x1370b20_7 = zeros(16000,18);
> Mat_0x1370b20_7 = [
> 
> ======= End of sample viewed file in MATLAB format. ========
> 
> The Mat Object has the right name but the MATLAB object has the name
> Mat_0xxxxxxx. How can I make the MATLAB object has the same name with
> the Mat object?
> 
> I also checkout the output for Vec object. The resultant MATLAB file
> has the right names for both Vec object and MATLAB object.
> 
> Thanks!
> 
> P.S.: I am using Version 3.7.0
> 
> HU Yaoyu