PetscFOpen with mode "a+"

[(Rebecca) Xuefei YUAN]

I tried PetscViewerFileSetMode and use the "FILE_MODE_APPEND", but it  
seems that the file has been overwritten,too.

I was not able to find any examples in tutorials, is there one using it?

Thanks a lot!


Quoting Matthew Knepley <knepley at gmail.com>:

> You use a ViewerCreate() and then
>
> http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/Viewer/PetscViewerFileSetMode.html
>
> to set append, and then FileSetName() to open the file.
>
>   Matt
>
> On Wed, Dec 31, 2008 at 10:24 AM, (Rebecca) Xuefei YUAN <xy2102 at columbia.edu
>> wrote:
>
>> Hi,All,
>>
>> I tried to use PetscFOpen to write the numerical result to a file, and I
>> would like to use the mode "a+" to add my result to the existing content in
>> my file. However, whenever the new result comes out, it will overwrite the
>> existing content in the file. Is there any problem here?
>>
>> Thanks a lot!
>>
>> Rebecca
>>
>>
>
>
> --
> 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
>



-- 
(Rebecca) Xuefei YUAN
Department of Applied Physics and Applied Mathematics
Columbia University
Tel:917-399-8032
www.columbia.edu/~xy2102