I am working on directed network data of the following form:
Origin farm Destination farm Year Farm 1 -> Farm 2 1999 Farm 1 -> Farm 3 1999 Farm 3 -> Farm 2 2000 Farm 1 -> Farm 2 2000 I am using the package 'igraph' and I would like to generate and plot (as a function of time) basic annual network statistics (degree, diameter, density) without having to subset for each year. I have a feeling that I can do this with either the 'loop' or 'apply' function but am battling with the coding. Help would be appreciated! Thanks ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.