Re: [Boost-users] [graph][BGL] Why can not I use edge_index_t?

Subject: Re: [Boost-users] [graph][BGL] Why can not I use edge_index_t?
From: Borja Miñano (bminyano_at_[hidden])
Date: 2013-03-14 10:34:10

Hello Nick,

Thank you for your answer.
I think I finally have managed the problem. For the ones who could need 
it there is what I've done:

     typedef 
boost::parallel::distributed_property_map<mpi_process_group,remote_key_to_global_e,egoods_map> 
Dist_egoods_Map;
     Dist_egoods_Map d_egoods = 
boost::parallel::make_distributed_property_map(pg, 
remote_key_to_global_e(), egoods);

Where remote_key_to_global_e is a struct I copied from the 
distributed_property_map_test.cpp on the graph_parallel examples.
egoods is a local property map where I want to read and write from the 
distributed property map.

Then I can write next processor's in_edges throug d_egoods map and the 
values are correctly stored in egoods local map.

It was a pain in the neck to understand the property maps, but I think I 
did it.

Thank you

El 14/03/13 15:23, Nick Edmonds escribió:
> On Mar 14, 2013, at 8:29 AM, Borja Miñano wrote:
>
>> Hello Jeremiah,
>>
>> Thank you for your help. I am using now Internal properties and property maps to read and write the properties.
>> But I have another question. I want to write to an in_edge from a processor when this edge is not local.
>> What do I need for being able to do it? An distributed property map or a iterator_property_map?
> If you want to write to non-local edges you'll need a distributed property map (which will require an edge index map) as well as a means of determining the edge_descriptor for the edge you want to write to.  Note that construction via edge() is not supported for non-local edges.
>
> Hope that helps,
> Nick
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-- 
Un saludo,
Borja Miñano
IAC3 - Universitat de les Illes Balears
ParcBit - Edifici 17 (Disset); Local D7
Cra. Valldemossa km. 7,4
E-07121 Palma de Mallorca. Balears. Spain.
Phone: [phone]