[R] Number of edges in a graph

[Petr Savicky]

On Sun, Mar 20, 2011 at 10:02:10PM -0700, kparamas wrote:
> Hi,
> 
> I have a igraph graph object.
> g <- watts.strogatz.game(1, 100, 5, 0.05)
> 
> If I have the summary of g, it prints
> > summary(g)
> Vertices: 100 
> Edges: 500 
> Directed: FALSE 
> No graph attributes.
> No vertex attributes.
> No edge attributes.
> 
> How to print only the number of edges in g?

Hi.

The function watts.strogatz.game() is probably from an extension
package. Can you send the name of the package and a reproducible
code to generate a simple example of the graph?

Try str(g). This shows the names of the components of object g,
which can then be used to extract only some of them.

Hope this helps.

Petr Savicky.