G, thank you. Here is the code: library(igraph)
D <- read.csv("New Jam.csv")
D <- D[,-1]
G <- graph.adjacency(as.matrix(D), weighted=TRUE)
V(G)$label <- V(G)$name
V(G)$shape <- "rectangle"
V(G)$color <- "white"
V(G)$size <- 40
mst <- minimum.spanning.tree(G)
lay <- layout.reingold.tilford(G, mode="all")
plot(mst, layout=lay)
Thanks again> Date: Wed, 8 Aug 2012 13:07:58 -0400
> From: [email protected]
> To: [email protected]
> Subject: Re: [igraph] Square Matrix /MST
>
> Hi, I am not sure how you are converting your data file into an igraph
> graph, probably you are trying to call graph.adjacency, and the data
> file is clearly not an adajacency matrix.
>
> Please show us your code and we will tell you what is wrong.
>
> G.
>
> On Wed, Aug 8, 2012 at 12:58 PM, jameson mcfarlane
> <[email protected]> wrote:
> > 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
> > [email protected]
> > https://lists.nongnu.org/mailman/listinfo/igraph-help
> >
>
>
>
> --
> Gabor Csardi <[email protected]> MTA KFKI RMKI
>
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