[Dune] Dune::IdSet

[Carsten Gräser]

Hi Hua,
you can also refer the documentation of IdSet and IndexSet

http://www.dune-project.org/doc/doxygen/dune-grid-html/class_dune_1_1_id_set.html
http://www.dune-project.org/doc/doxygen/dune-grid-html/struct_dune_1_1_index_set.html

Regards
Carsten


Am 15.02.2010 12:40, schrieb Guo Hua:
> Hi Oliver
> 
> Thank you. I see. 
> What I want to do is to have a local id sets and global id sets only on the gridleaf.
> for the local id sets. I think using the the function leafIndexSet() is OK?
> But how to get a global id set, since I want the id should be consecutive. So globalIdSet()
> may be not OK?
> 
> Cheers
> Hua
> 
> 
> 
> 
> -----Original Message-----
> From: Oliver Sander [mailto:sander at mi.fu-berlin.de]
> Sent: Mon 2/15/2010 12:15 PM
> To: Guo  Hua
> Cc: dune at dune-project.org
> Subject: Re: [Dune] Dune::IdSet
>  
> Hi Hua!
> Global ids are unique across all processors.  Local ids are unique
> only on each processor.  Hence you may have two entities on two
> different processors with the same local id.  If your programm runs
> on a single processor there is no difference.
> 
> best,
> Oliver
> 
> Guo Hua schrieb:
>> Hi everyone
>>
>> I feel confused when reading the explanations of these two functions
>> in the class Dune::Grid< dim, dimworld, ct, GridFamily >.
>>
>> const Codim< 0 >::GlobalIdSet & globalIdSet () const
>>  	return const reference to the grids global id set
>>
>> const Codim< 0 >::LocalIdSet & localIdSet () const
>>  	return const reference to the grids local id set 
>>
>> Would you mind to make it more clear? Especially the differences of two.
>> Thanks a lot!
>>
>> Cheers,
>> Hua
>>
>> _______________________________________________
>> Dune mailing list
>> Dune at dune-project.org
>> http://lists.dune-project.org/mailman/listinfo/dune
>>   
> 
> 


-- 
----------------------------------------------------------------------
Carsten Gräser           | phone: +49-30 / 838-75349
Freie Universität Berlin | fax  : +49-30 / 838-54977
Institut für Mathematik  | email: graeser at math.fu-berlin.de
Arnimallee 6             |
14195 Berlin, Germany    | URL  : http://page.mi.fu-berlin.de/graeser
----------------------------------------------------------------------