[BioC] a question about graph in R

[Steve Lianoglou]

Hi,

On Nov 23, 2009, at 7:53 PM, Seth Falcon wrote:

> Hi,
> 
> [replying on the list]
> 
> On 11/22/09 12:58 AM, jiabao xu wrote:
>> Hi Seth Falcon,
>>    thanks for your reply .G1 and G2 are parts of G.and union(G1,G2) is
>> G,If i know the G  and G2 ,how to get G1.I am sorry for that i didn't
>> describle clear in the last  email.

You might want to look at the igraph package. It has a graph.difference function, which sounds like what you might be looking for:

"graph.difference creates the difference of two graphs. Only edges present in the first graph but not in the second will be be included in the new graph."

-steve

--
Steve Lianoglou
Graduate Student: Computational Systems Biology
  |  Memorial Sloan-Kettering Cancer Center
  |  Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact