[BGL] Access bundle graph properties

How does one access a bundle graph property in adjacency_list ?

for example

struct VertexProperties
{
    int        index;
    bool     status;
};

struct EdgeProperties
{
    int        index;
    bool     status;
};

struct GraphProperties
{
    int something;
};

boost::adjacency_list
<
    boost::listS,
    boost::vecS,
    boost::directedS,
    VertexProperties,
    EdgeProperties,
    GraphProperties
 > graph;


if 'v' is a vertex then I can do 'grap[v].status' to get that vertex
property. But what about the graph properties? I've tried
'graph.something' but that didn't work :(

Any suggestions ?

regards,
Ioannis



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[Ferng, Andrew D]

This might help...
http://www.boost.org/libs/graph/doc/bundles.html 



-----Original Message-----
From: Ioannis Nousias [mailto:s0238762@...]
Sent: Monday, February 18, 2008 3:55 PM
To: boost-users@...
Subject: [Boost-users] [BGL] Access bundle graph properties

How does one access a bundle graph property in adjacency_list ?

for example

struct VertexProperties
{
    int        index;
    bool     status;
};

struct EdgeProperties
{
    int        index;
    bool     status;
};

struct GraphProperties
{
    int something;
};

boost::adjacency_list
<
    boost::listS,
    boost::vecS,
    boost::directedS,
    VertexProperties,
    EdgeProperties,
    GraphProperties
 > graph;


if 'v' is a vertex then I can do 'grap[v].status' to get that vertex
property. But what about the graph properties? I've tried
'graph.something' but that didn't work :(

Any suggestions ?

regards,
Ioannis
_______________________________________________
Boost-users mailing list
Boost-users@...
http://lists.boost.org/mailman/listinfo.cgi/boost-users

that's the page I was reading, but it doesn't mention bundle graph
properties. It talks about vertex and edge bundle properties only.


By the way. I use the following for now:

graph.m_property.something;

which works, but I know it's wrong from an interface point of view (the
member m_property is meant to be protected, but for some implementation
detail, it isn't)



Ferng, Andrew D wrote:

> This might help...
> http://www.boost.org/libs/graph/doc/bundles.html 
>
>
>
> -----Original Message-----
> From: Ioannis Nousias [mailto:s0238762@...]
> Sent: Monday, February 18, 2008 3:55 PM
> To: boost-users@...
> Subject: [Boost-users] [BGL] Access bundle graph properties
>
> How does one access a bundle graph property in adjacency_list ?
>
> for example
>
> struct VertexProperties
> {
>     int        index;
>     bool     status;
> };
>
> struct EdgeProperties
> {
>     int        index;
>     bool     status;
> };
>
> struct GraphProperties
> {
>     int something;
> };
>
> boost::adjacency_list
> <
>     boost::listS,
>     boost::vecS,
>     boost::directedS,
>     VertexProperties,
>     EdgeProperties,
>     GraphProperties
>  > graph;
>
>
> if 'v' is a vertex then I can do 'grap[v].status' to get that vertex
> property. But what about the graph properties? I've tried
> 'graph.something' but that didn't work :(
>
> Any suggestions ?
>
> regards,
> Ioannis
> _______________________________________________
> Boost-users mailing list
> Boost-users@...
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>
>
>  

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[Benoît Dagon]

Hi,

I think you should use the public method get_property of the
adjacency_list to acces properly the graph property.

See http://www.boost.org/libs/graph/doc/adjacency_list.html

template <class GraphProperties, class GraphPropertyTag>
typename graph_property<adjacency_list, GraphPropertyTag>::type&
get_property(adjacency_list& g, GraphPropertyTag);

Return the property specified by GraphPropertyTag that is attached to
the graph object g. The graph_property traits class is defined in
boost/graph/adjacency_list.hpp.

Cheers,
~Benoît
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[tonyaim83]

Hi
I'm also facing the same problem. For me also m_property works fine but what does it actually means and also if anybody else let us know a better and more cleaner way to access the graph properties that would be gr8

Ioannis Nousias wrote:

that's the page I was reading, but it doesn't mention bundle graph
properties. It talks about vertex and edge bundle properties only.


By the way. I use the following for now:

graph.m_property.something;

which works, but I know it's wrong from an interface point of view (the
member m_property is meant to be protected, but for some implementation
detail, it isn't)



Ferng, Andrew D wrote:
> This might help...
> http://www.boost.org/libs/graph/doc/bundles.html 
>
>
>
> -----Original Message-----
> From: Ioannis Nousias [mailto:[e-mail]]
> Sent: Monday, February 18, 2008 3:55 PM
> To: [e-mail]
> Subject: [Boost-users] [BGL] Access bundle graph properties
>
> How does one access a bundle graph property in adjacency_list ?
>
> for example
>
> struct VertexProperties
> {
>     int        index;
>     bool     status;
> };
>
> struct EdgeProperties
> {
>     int        index;
>     bool     status;
> };
>
> struct GraphProperties
> {
>     int something;
> };
>
> boost::adjacency_list
> <
>     boost::listS,
>     boost::vecS,
>     boost::directedS,
>     VertexProperties,
>     EdgeProperties,
>     GraphProperties
>  > graph;
>
>
> if 'v' is a vertex then I can do 'grap[v].status' to get that vertex
> property. But what about the graph properties? I've tried
> 'graph.something' but that didn't work :(
>
> Any suggestions ?
>
> regards,
> Ioannis
> _______________________________________________
> Boost-users mailing list
> [e-mail]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>
>
>  

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