Re: [igraph] Select vertex by name

[Tamas Nepusz]

Hi Alvaro,

> Do you know a way to select specific nodes to include in a  
> igraph_vs_t by using their name attribute? I can check every single  
> node and check their names but I was wondering if there is a more  
> efficient way.
I think this is the most efficient way as vertices are not indexed by  
attribute values. (Even if you do something like  
g.vs.select(name="foo") in the Python interface, the same linear  
search happens behind the scenes). However, if you do many searches on  
the name attribute, you can set up an index (mapping names to indices)  
manually for the first search and use the index after that.

--
Tamas