[R] How to subset a portion of columns from a matrix

[affy snp]

Hi Julian,

Thanks for the help!

Best,
      Allen



On Nov 9, 2007 11:08 PM, Julian Burgos <jmburgos at u.washington.edu> wrote:
> There are many ways. For example, you can do something like
>
> A[seq(1,dim(A)[2],2)]
>
> Julian
>
> Julian M. Burgos
>
> Fisheries Acoustics Research Lab
> School of Aquatic and Fishery Science
> University of Washington
>
> 1122 NE Boat Street
> Seattle, WA  98105
>
> Phone: 206-221-6864
>
>
>
>
> affy snp wrote:
> > Dear List,
> >
> > Hi! I am wondering what is the simplest way to subset a portion of columns
> > from a matrix.
> >
> > For example, there is a matrix A (238,304*243). What is the simplest
> > way to get a sub-matrix B which comprises of column 1, 3, 5, 7,9,...(odd column
> > number) from matrix A?
> >
> > Thank you very much for your help!
> >
> > Best,
> >      Allen
> >
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>