Hi, I use to use this commands:
sources<-get.edges(net,E(net))[,2]; targets<-get.edges(net,E(net))[,1]; Maybe there is a better way to do this, but that is what I use. Cheers, Charles On Thu, Mar 22, 2012 at 4:36 AM, Sam Steingold <[email protected]> wrote: > I have a graph in R: > Vertices: 2 > Edges: 2 > Directed: TRUE > Edges: > > [0] '4f33629f41393d3d' -> '4f54f25aaf86e815' > [1] '4f33629f41393d3d' -> '4f33629f41393d3d' > > How do I get the _set_ of sources (and destinations) of all edges? > I can get all edges as E(g), and individual edges as E(g)[0..1], but how > do I get the source and destination (from & to) of an edge? > "Vertex and edge sequences and iterators" doc mentions 'from' and 'to' > "special functions", but I cannot figure out how to use them. > > Thanks! > > -- > Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X > 11.0.11004000 > http://www.childpsy.net/ http://truepeace.org > http://pmw.org.il http://americancensorship.org http://iris.org.il > What was the best thing before sliced bread? > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help -- Um axé! :) -- Charles Novaes de Santana http://www.imedea.uib-csic.es/~charles PhD student - Global Change Laboratorio Internacional de Cambio Global Department of Global Change Research Instituto Mediterráneo de Estudios Avanzados(CSIC/UIB) Calle Miquel Marques 21, 07190 Esporles - Islas Baleares - España Office phone - +34 971 610 896 Cell phone - +34 660 207 940 _______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
