I'm trying to import an edge list into igraph's graph object in R. Here's how I'm trying to do so:
graph <- read.graph(edgeListFile, directed=FALSE)
I've used this method before a million times, but it just won't work for this specific data set:
294834289 476607837
560992068 2352984973
560992068 575083378
229711468 204058748
2432968663 2172432571
2473095109 2601551818
...
R throws me this error:
Error in read.graph.edgelist(file, ...) :
At structure_generators.c:84 : Invalid (negative) vertex id, Invalid vertex id
The only difference I see between this dataset and the ones I previously used is that those were in sorted form, starting from 1:
1 1
1 2
2 4
...
Any clues?