[igraph] How to read a graph data with non numeric vertex ID

[lan gao]

Hey, All

         I need to read a graph data with non-numerci vertex ID in txt format.

 

My raw data looks like this

 

  DIP:2551N DIP:1189N
  DIP:2551N DIP:1330N

  DIP:2551N DIP:4449N
  DIP:2551N DIP:2425N
......................
For example,  DIP:255IN is the name of the vetex.

I use read.graph( "file", format="pajek") but it does not work..

 

Anybody can help me out?

Thannks a lot!

 

Lani