[BioC] Question on node attribute fontsize in Rgraphviz

[Claudio Lottaz]

Dear Rgraphviz-experts,

I am trying to adjust the fontsize of graph nodes in a plot produced by the Rgraphviz package. However, any fontsize related changes I make don't have an effect when I plot the graph. For example code 1 below generates a random graph with 4 nodes. In order to make the fontsize of the graph nodes smaller than normal, I tried to adjust the attrs variable as shown in code 2, but after plotting the graph I still notice no change in terms of fontsize. All other node attributes work except for fontsize. I don't know if this is expected in general or I made a mistake.

Many thanks for any help!
Cheers,
Claudio


code1:
 library("Rgraphviz")
 set.seed(123)
 V <- LETTERS[1:4]
 M <- 1:4
 g1 <- randomGraph(V, M, 0.2)
plot(g1)

code2:
globA=list(node=list(fontsize="6"),edge=list(minlen="3"))
plot(g1,attrs=globA)