[R] logical operations with lists

[Iain Gallagher]

sorry, misread your post

try this...

> c<-setdiff(a,b)
> c
[[1]]
[1] "a"

[[2]]
[1] "b"

for a list C that contains all the members in
the list B that are not in list A

--- On Fri, 12/2/10, Zoppoli, Gabriele (NIH/NCI) [G] <zoppolig at mail.nih.gov> wrote:

> From: Zoppoli, Gabriele (NIH/NCI) [G] <zoppolig at mail.nih.gov>
> Subject: [R] logical operations with lists
> To: "r-help at r-project.org" <r-help at r-project.org>
> Date: Friday, 12 February, 2010, 22:06
> Sorry, maybe it's easy but I haven't
> found anything useful:
> 
> how can I obtain a list C that contains all the members in
> the list B that are not in list A? This are lists of nanes,
> not numbers!
> 
> Thank you
> 
> 
> Gabriele Zoppoli, MD
> Ph.D. Fellow, Experimental and Clinical Oncology and
> Hematology, University of Genova, Genova, Italy
> Guest Researcher, LMP, NCI, NIH, Bethesda MD
> 
> Work: 301-451-8575
> Mobile: 301-204-5642
> Email: zoppolig at mail.nih.gov
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