[R] logical operations with lists

Iain Gallagher iaingallagher at btopenworld.com
Sat Feb 13 00:24:49 CET 2010

```these are vectors in R not lists

try:

a<-c('a', 'b', 'c')#first vector (like A)
> a
[1] "a" "b" "c"
b<-c('c', 'd', 'e')#second vector (like B)
> b
[1] "c" "d" "e"
c<-setdiff(b,a)# all those in B but not A
> c
[1] "d" "e"

cheers

iain

--- 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: Re: [R] logical operations with lists
> To: "r-help at r-project.org" <r-help at r-project.org>
> Date: Friday, 12 February, 2010, 22:57
> I'm sorry but here's what I get:
>
> > A[1:10,]
>  [1] UQCRC1 IDH3B  PDHA1  SUCLA2 COX5B
> SDHB   SDHA   MDH2   DLD
>   COQ7
>
> > dim(A)
> [1] 1013    1
>
> > B[1:10,]
>  [1] 3.8-1.2 3.8-1.3 3.8-1.4 3.8-1.5 5-HT3c2 A1BG
>   A1CF
> A2BP1   A2LD1   A2M
>
> > dim(B)
> [1] 55546     1
>
> > C<-rbind(A,B)
> > dim(C)
> [1] 56559     1
>
> > D <- C[which(C %in% A ==FALSE)]
> > dim(D)
> [1] 56559     0
>
> and so with any other proposed method.
>
> I imported the list A and B this way:
>
> >
>
> and then removed the redundant rows with:
>
> > A<-unique(A)
>
> Guess I'm doing something really wrong here... Sorry for
> the inexperience, I'm trying to improve...
>
>
>
>
>
> 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
> ________________________________________
> From: jbreichel at gmail.com
> [jbreichel at gmail.com]
> On Behalf Of Jonathan [jonsleepy at gmail.com]
> Sent: Friday, February 12, 2010 5:21 PM
> To: Zoppoli, Gabriele (NIH/NCI) [G]
> Cc: r-help at r-project.org
> Subject: Re: [R] logical operations with lists
>
> This is probably not the best way, but (assuming you had
> vectors and
> not lists, since I'm not sure what your list looks like):
>
> C <- B[which(B %in% A ==FALSE)]
>
> Regards,
> Jonathan
>
>
> On Fri, Feb 12, 2010 at 5:06 PM, Zoppoli, Gabriele
> (NIH/NCI) [G]
> <zoppolig at mail.nih.gov>
> wrote:
> > 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
> > ______________________________________________
> > R-help at r-project.org
> mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > and provide commented, minimal, self-contained,
> reproducible code.
> >
>
> ______________________________________________
> R-help at r-project.org
> mailing list
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