A have just run this 100 times, it always gave me the same MST. Please make sure that the problem exists for this file. If it really does, then send me the output of the sessionInfo() function. Thanks.
G. On Mon, Apr 22, 2013 at 10:31 PM, jameson mcfarlane <[email protected]>wrote: > Gabor, > Here is a sample .csv file. > > Thanks, > Jameson > ------------------------------ > Date: Mon, 22 Apr 2013 22:14:24 -0400 > From: [email protected] > To: [email protected] > Subject: Re: [igraph] I'm getting Different MST each time > > > Hi, unfortunately we cannot run your code because we don't have the .csv > file. Please send some self-contained example that reproduces the problem, > e.g. make up some toy data. See e.g. > > http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example > > Thanks, > Gabor > > > On Mon, Apr 22, 2013 at 9:44 PM, jameson mcfarlane > <[email protected]>wrote: > > Hello, > I am creating a minimum spanning tree (MST) with i-graph. For some > reason, I seem to get a different MST diagram (nodes in different order) > each time I run it. For example, sometimes the primary tree node is say > "Jon K.". Other times, it could be "Larry Z." Could any help with what I am > doing wrong? > > Here is the code: > > library(igraph) > tab <- read.csv("NewJam12.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=20, height=10) > plot(mst, layout=lay, vertex.size= 5, vertex.size2=15, > vertex.shape="circle", asp=FALSE, > vertex.label.cex=0.5, vertex.color="green") > > > ------------------------------ > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > > -- > Gabor Csardi <[email protected]> MTA KFKI RMKI > > _______________________________________________ igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > > _______________________________________________ > 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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