R/igraph: adjusting meeting point of edges on a vertex

Asked Nov 09 '20 at 11:51

Active Nov 10 '20 at 03:27

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I am trying to use igraph to plot pedogree pedigree . I would like to have the edges met together (right figure) instead of spaced apart (left figure) in the default setting.

I can't find the correct argument in igraph manual to set the edge positions. Anyone knows?

Here are the R scripts used to generate the left figure.

    library(igraph)
    ped <- data.frame(id=1:3, p1=c(0,0,1), p2=c(0,0,2), gen=c(0,0,1))
    rel <- matrix(c(1,2,3,3), ncol=2)
    ped.graph <- graph.data.frame(rel, directed=F, ped)
    pos <- matrix(c(1,2,1.5,2,2,1), ncol=2)
    plot(ped.graph, rescale=T, layout=pos, vertex.size=50)

edited Nov 09 '20 at 21:39

ZF007

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asked Nov 09 '20 at 11:51

jnolen

Can you provide a minimal working example? What have you already tried and where are you stuck? – edsandorf Nov 09 '20 at 12:15
have a look here for how to ask questions on SO https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example – desval Nov 09 '20 at 12:44
I have added the R scripts. Hope that helps. – jnolen Nov 09 '20 at 14:53

R/igraph: adjusting meeting point of edges on a vertex

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