[petsc-users] How to get nodes list refer to unstructure mesh element

[陳宗興]

Thanks, I'll check them out.

Mark Adams <mfadams at lbl.gov> 於 2018年10月12日 週五 下午5:22寫道：

> You want to use DMPlexVecGetClosure:
>
>
> https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DMPLEX/DMPlexVecGetClosure.html
>
> The examples shown here don't close cells. What you
> want. src/dm/impls/plex/examples/tutorials/ex6.c does iterate over cells,
> and get the closure (vertices), which is what you want.
>
> Mark
>
>
>
> On Fri, Oct 12, 2018 at 4:58 AM 陳宗興 <barrydog505 at gmail.com> wrote:
>
>> Hi all,
>>
>> I have import a .msh file from DMPlexCreateFromFile.
>> I have found DMDAGetElements in DMDA's ex5 having this function,
>> how can i do this from DMPlex or unstructure grid.
>> Are there any methods that can get nodes list refer to unstructure mesh
>> element?
>> ------------------------------------
>> for example :
>>        4
>>      /     \
>>    /    1   \
>>  2 - - - - - 3           element [1]  >> nodes list [2 3 4]
>>
>> Thanks a lot.
>>
>> Best regards,
>> Barry
>>
>
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