[igraph] read.graph do not upload my network

[Delphine Faugaret]

Hello,

I created a network (around 100 of nodes, undirected, no loops, some nodes are isolated) in graphml. I checked that I could see the network using Gephi or cytoscape to be sure that I wrote everything correctly, and it works.

But when I use the function read.graph (read.graph("networks.graphml", format="graphml")). Of course the line before I specificied the pathway to find my file.

I've got the following answer: Vertices 0, Edges 0, Directed:False.

What did I do wrong?

Delph