Re: [igraph] Drawing MST ???

[jameson mcfarlane]

Thank you. I will test it later today.
 
/jm
 

> Date: Thu, 16 Aug 2012 22:15:04 -0400
> From: address@hidden
> To: address@hidden
> Subject: Re: [igraph] Drawing MST ???
>
> On Thu, Aug 16, 2012 at 10:11 PM, jameson mcfarlane
> <address@hidden> wrote:
> > G,
> > Rather than having the straight lines I would prefer to have the drawing
> > look like roots of a tree.
>
> Try the 'circular=TRUE' option of the Reingold-Tilford layout generator.
>
> > I would like to see smaller and larger circles
> > depending on the number of nodes. Hence, I believe it should be the vertex
> > sizes.
>
> Then just set
>
> vertex.size=degree(graph) * 10
>
> or something similar in plot(). The factor 10 might need some experimenting.
>
> You can do interactive plotting via tkplot() and then use
> tkplot.getcoords() to query the coords you have manually adjusted.
>
> Gabor
>
> > Thank you,
> > jameson
> >
> >> Date: Thu, 16 Aug 2012 19:00:10 -0400
> >> From: address@hidden
> >> To: address@hidden
> >> Subject: Re: [igraph] Drawing MST ???
> >
> >>
> >> Hi Jameson,
> >>
> >> On Thu, Aug 16, 2012 at 5:04 PM, jameson mcfarlane
> >> <address@hidden> wrote:
> >> > Hi Everyone,
> >> > I currently have a minimum spanning tree (MST) looking like
> >> > this: see attachment msta.gif.
> >> > But I want it to look like this: mstb.gif
> >>
> >> What do you mean exactly by 'this'? Same font? Vertex sizes? Layout?
> >> Labels? Color? Image size? Something else?
> >>
> >> Or really exactly like mstb.gif? Then just use mstb.gif. :)
> >>
> >> G.
> >>
> >> > Here is the code (below) using igraph. I'd greatly appreciate any help.
> >> > Thank you
> >> >
> >> > library(igraph)
> >> > tab <- read.csv("NewJam6.csv")
> >> > tab <- tab[,-1]
> >> > g <- graph.adjacency(as.matrix(tab), weighted=TRUE)
> >> > V(g)$label <- V(g)$name
> >> > mst <- as.undirected(minimum.spanning.tree(g))
> >> >
> >> > lay <- layout.reingold.tilford(mst, root=which.max(degree(mst))-1)
> >> > lay <- cbind(lay[,2], lay[,1]) # rotate
> >> > x11(width=15, height=8)
> >> > plot(mst, layout=lay, vertex.size=5, vertex.size2=10,
> >> > vertex.shape="circle", asp=FALSE,
> >> > vertex.label.cex=0.7, vertex.color="green")
> >> >
> >> > ________________________________
> >> > From: address@hidden
> >> > To: address@hidden
> >> > Date: Wed, 8 Aug 2012 16:58:51 +0000
> >> > Subject: [igraph] Square Matrix /MST
> >> >
> >> > Hello Everyone,
> >> > I'm rather new to igraph. I am using Windows 7 to create an MST
> >> > (Minimum Spanning Tree) with the attached data file. However, I keep
> >> > getting
> >> > that this data is not a square matrix. Any kind of help will be much
> >> > appreciated.
> >> >
> >> > Thank you,
> >> > Jameson
> >> >
> >> > _______________________________________________ igraph-help mailing list
> >> > address@hidden
> >> > https://lists.nongnu.org/mailman/listinfo/igraph-help
> >> >
> >> > _______________________________________________
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> >> > https://lists.nongnu.org/mailman/listinfo/igraph-help
> >> >
> >>
> >>
> >>
> >> --
> >> Gabor Csardi <address@hidden> MTA KFKI RMKI
> >>
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> >
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> >
>
>
>
> --
> Gabor Csardi <address@hidden> MTA KFKI RMKI
>
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