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From: | Gábor Csárdi |
Subject: | Re: [igraph] igraph slow when plotting |
Date: | Fri, 28 Feb 2014 07:04:38 -0500 |
Dear List,
I have observed a strange behavior in igraph with R. If I do:
g<-graph.empty(n=0, directed=T)
# add nodes
g<-add.vertices(g, length(df[,1]), attr=df)
# plot
plot(g, vertex.size=3, vertex.label.cex=0.7, vertex.label.dist=0.3)
it’s fast as usual, but if I do:
g<-graph.empty(n=0, directed=T)
# add nodes
g<-add.vertices(g, length(df[,1]), attr=df)
# shape visualization, if type = city -> squared, else circle
V(g)[type=="city"]$shape<-"square"
V(g)[type=="potter"]$shape<-"circle"
# plot
plot(g, vertex.size=3, vertex.label.cex=0.7, vertex.label.dist=0.3)
then it looks like it plots vertices one by one… and it takes considerably more time… any guess where I am wrong?
best,
Simone
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