Hi, weights = NULL means that the weights will be used if they are present. You'll need to remove them, or set all of them to 1 if you want to ignore them.
Gabor On Sun, May 12, 2013 at 6:27 PM, Antoniazzi Marco < [email protected]> wrote: > Hi all, > > I have two matrices which look as following: > > Matrix A: 14*14 with weighted edges. > > Matrix B: 14*14 where I changed all the weighted edges with 1. > > I wanted to check whether igraph results are correct but I can't figure > out the explanations to the following problem: > > GraphA <- graph.adjacency(MatrixA, mode=c("directed"),weighted = NULL ) > Betweenness <- betweenness ( GraphA, directed = TRUE, > weights = NULL, normalized=TRUE) > > GraphB <- graph.adjacency(MatrixB, mode=c("directed"), weighted= NULL) > BetweennessN <- betweenness ( GraphB, directed = TRUE, > weights = NULL, normalized=TRUE) > > from which I should get exactly the same results as I specify > weighted=NULL but indeed the results are different one from the other. > I have tried to remove 'normalized' argument to see whether it is biased > but I get different results as well... > > Any thoughts? > > Thank you very much for your help!! > Marko > _______________________________________________ > 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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