Dear all,
I was kindly provided with a windows package for igraph 0.6, thank you Gábor
Csárdi, to calculate the weighted betweenness centrality, however I am getting
the error message:
Error in betweenness(g1, weights = TRUE) :
At centrality.c:1454 : Weight vector length does not match, Invalid value
I entered some of the code in the function manually: weights <- E(graph)$weight
to check what the variable weights called is and the length, and it is:
length(weights)
[1] 31996000
Which is the same as:
ecount(g1)
[1] 31996000
I previously read that this error was due to the weights vector length not
being equal to the number of edges in the graph, however this would not seem to
be the case, using the code: , which is contained within the betweenness
function. I am calling the function as such:
wb1 <- betweenness(g1, weights = TRUE)
which I believe is the correct way. I am a little confused now as to why there
is an error, could anyone help me with this?
Regards
Alex
___________________________________________________________________
Alex Upton, BEng, MRes, PG Cert Business Administration
PhD Researcher Biomedical Informatics, Signals and Systems
School of Electronic, Electrical and Computer Engineering,
College of Engineering and Physical Sciences, University of Birmingham
Edgbaston, Birmingham, B15 2TT, United Kingdom
Fax: +44 121 4144291 (school general office)
Email: [email protected]
Personal Web: http://postgrad.eee.bham.ac.uk/uptona/
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