[R] igraph - designing graph plot by attributes

[Gábor Csárdi]

Create a factor variable for the different age categories, see cut().
Then use as.integer() on the factor variable and index a vector of
node sizes with it. E.g.

g <- graph.ring(10)
V(g)$age <- sample(20:78, vcount(g), replace=TRUE)
V(g)$agecat <- cut(V(g)$age, breaks = c(20,35,50,65,78))
V(g)$size <- c(10,15,20,25)[ V(g)$agecat ]

plot(g, layout=layout.circle)

Best,
Gabor

On Wed, Aug 10, 2011 at 1:38 PM, Gaitan, Andreea
<andreea.gaitan10 at imperial.ac.uk> wrote:
> Hi,
>
> I'm working on some social networks and I managed to create the graphs with labels and edges weight, but I would also like to change the size of the vertices according to the age of the persons in the network and the shape according to the gender. Now for the age, I have people with ages between 20 and 78, and I would like to have 4 categories (sizes): 20-35, 36-50, 50-65, >65. I have entered the ages as attributes of the vertices from a table, so they are included in the graph, but how do I change the size in the plot? And the same for gender with different shapes (circle and square maybe).
>
> Thanks in advance and regards,
> Andreea.
>
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>
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-- 
Gabor Csardi <csardi at rmki.kfki.hu>     MTA KFKI RMKI