[igraph] Creating graph from session data

[Farhan Ahmed]

Hello there,

I have a data frame with the following structure -

session   object

1             A

1             B

1             C

2             A

2             D

3             B

3             C

3             E

I want to create a graph where there's a bi-directional edge between objects that appear in the same session. So in the example above, there'd be an edge between A and B, B and C, A and C, A and D, B and C, B and E and C and E.

Is there an easy way to do this using igraph?

Thanks!

Farhan