[R] Distance measure for large sparse matrix

Hello, I am trying to compute a distance measure for the rows (var1) in a sparse matrix: require(Matrix) dfx = xtabs(~ var1 + var2, data = df, sparse = T, drop.unused.levels = T ) dm = dist(dfx) on my data frame. Note that I am using the xtabs function from the Matrix package, not

Re: [R] For Social Network Analysis-Graph Analysis - How to convert 2 mode data to 1 mode data?

# This yields: > g4 Vertices: 4 Edges: 4 Directed: FALSE Edges: [0] Sam -- Greg [1] Sam -- Tom [2] Sam -- Mary [3] Tom -- Mary Which is what we wanted. I have not figured out how to weight edges yet (the Sam and Tom edge and the Tom and Mary

Re: [R] For Social Network Analysis-Graph Analysis - How to convert 2 mode data to 1 mode data?

t;-Original Message- >From: Gabor Csardi [mailto:[EMAIL PROTECTED] >Sent: Saturday, May 10, 2008 1:09 PM >To: Messing, Solomon O. >Cc: r-help@r-project.org >Subject: Re: [R] For Social Network Analysis-Graph Analysis - How to convert 2 >mode data to 1 mode data? > >Solo

[R] For Social Network Analysis-Graph Analysis - How to convert 2 mode data to 1 mode data?

Hi, Does anyone know of a package in R that has a function to convert network data (e.g. an adjacency matrix or ) from 2-mode to 1-mode? I am conducting social network analysis. I know that Pajek has this function under Net --> Transform --> 2-mode to 1-mode --> Rows. I have searched the doc