[igraph] simple example, graph.incidence skips directed parameter

[Jose Quesada]

Hi Gabor, Tamar, (all),

In this simple example, graph.incidence skips directed parameter.

inc <- matrix(sample(0:1, 15, repl=TRUE), 3, 5)
colnames(inc) <- letters[1:5]
rownames(inc) <- LETTERS[1:3]
i <- graph.incidence(inc, directed=T)
summary(i) # it's not a directed graph

I have no idea why, because it certainly works on other (bigger)
networks I'm using.
Thoughts?

Best,
-Jose

-- 
Jose Quesada, PhD.
Max Planck Institute,
Center for Adaptive Behavior and Cognition -ABC-, 
Lentzeallee 94, office 224, 14195 Berlin
http://www.josequesada.name/