# Draw a graph from an incidence matrix in Excel

I am trying to study the social network of the center where I am working. I have done a compilation of relation between personal from programed meeting, formal working team, etc. to analyze structural relevant positions. I recapitulated all these information in a matrix of incidence: a square symmetric matrix which entries are related with the time two persons stay together. This matrix is in Excel.

I am looking for free software which draws a graph from the incidence matrix via importation of Excel file.

Any help?

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I can't offer specific software recommendations, but know that Excel can save files as comma separated value or tab delimited (.csv or .tab) files, which are pretty much universal for data-driven software. So, no need to limit your search only to programs that can read from excel files. –  Drew Christianson Jun 2 '12 at 17:31
Ok. If I save data in .csv for example, are there software to make graph from incidence matrix? –  H. Kabayakawa Jun 2 '12 at 17:35
Yup, looks like R will do it. I've added an answer with links to it and the necessary package. –  Drew Christianson Jun 2 '12 at 18:10

x=read.csv("C:/yourfilenale.csv")