Can't set node size and group at the same time

[fzhang612]

Hi,

Seems like I can set node size and group separately but can't simultaneously. Here is the code

# make a graph
actors <- data.frame(name=c("Alice", "Bob", "Cecil", "David",
                            "Esmeralda"),
                     age=c(48,33,45,34,21),
                     gender=c("F","M","F","M","F"))
relations <- data.frame(from=c("Bob", "Cecil", "Cecil", "David",
                               "David", "Esmeralda"),
                        to=c("Alice", "Bob", "Alice", "Alice", "Bob", "Alice"),
                        same.dept=c(FALSE,FALSE,TRUE,FALSE,FALSE,TRUE),
                        friendship=c(4,5,5,2,1,1), advice=c(4,5,5,4,2,3))
g <- graph.data.frame(relations, directed=TRUE, vertices=actors)

# setting up node size alone works
ggnet(g, size=V(g)$age/2)

# setting up node group alone works as well
ggnet(g, node.group = V(g)$gender)

# this does NOT work if setting up size and group at the same time
ggnet(g, node.group = V(g)$gender, size = V(g)$age/2)

Thanks!

[briatte]

Thanks for the report. There are two issues here:

1. There is a namespace conflict between network and igraph
2. The size argument is meant to be a single-length vector

I have fixed the first issue in my last commit. I don't yet have a solution to the second one, though, because I had not planned this use of the size argument. I can try to make it work later, though :)

Hope this helps!

[briatte]

P.S. Your issue just helped me improve the way node labels are drawn. Thanks!

[fzhang612]

Glad to make some contribution.

Looking forward to next version where I can control the node size. In my opinion this is a useful feature.

Keep up the good work. Thanks!

[briatte]

Here's a way to get what you want in the meantime:

ggnet(g, size = 0, node.group = V(g)$gender) + 
  geom_point(aes(size = V(g)$age/2)) + 
  scale_size_area(max_size = 12)

[fzhang612]

Looks great! Thanks!

Should I close this issue?

[briatte]

Yes please :)