[BioC] A question about the construction of a node-link graph based on incident matrix

[Wolfgang Huber]

Yilin Liu wrote:
> I want to construct a node-link graph. What is known is the ID of the
> two nodes on the terminal of each link (link ID is also known). Based on
> this information,how can I construct a node-link graph.
> 
Ciao Yilin,

Have a look at the function ftM2graphNEL in the graph package.
For example

 From <- c("A","A","C","C")
To   <- c("B","C","B","D")
L    <- cbind(From,To)

W  <- 1:4
G1 <- ftM2graphNEL(L, W, edgemode="directed")

More info is in the man page.

Best regards
   Wolfgang

-------------------------------------
Wolfgang Huber
European Bioinformatics Institute
European Molecular Biology Laboratory
Cambridge CB10 1SD
England
Phone: +44 1223 494642
Fax:   +44 1223 494486
Http:  www.ebi.ac.uk/huber