Re: [igraph] question about read and write graph from and into files

[Tamás Nepusz]

Hi,

> According to the description in the documentation about the parameter 
> "names"(I.e., Logical value, if TRUE the symbolic names of the vertices will 
> be added to the graph as a vertex attribute called “name”), the vertex should 
> have an attribute named as "name" which are the gene symbols.
...assuming that you have turned on the attribute handler beforehand as 
outlined in the chapter named "Accessing attributes from C":

http://igraph.sourceforge.net/doc/html/ch12s02.html

All the best,
Tamas