[R] for loop not working

[Pascal Oettli]

Hi,

Why don't you use Arun's solution?

Regards,
Pascal

Le 25/12/2012 15:57, eliza botto a écrit :
> Dear Arun,
> as usuall you were spot on. i tried the following
>
> *_>lapply(_**_seq_len(ncol(e)), function(i) {_*
>
> _
> _
>
> _>a<-e[,(e[i]:444)]_
>
>
>  >a[,c(TRUE, rep(FALSE,36))]
>
>
>>})
>
> but it never worked.
> thanks for your kind help.
> lots of love
>
> elisa
>
>  > Date: Mon, 24 Dec 2012 22:40:08 -0800
>  > From: smartpink111 at yahoo.com
>  > Subject: Re: [R] for loop not working
>  > To: eliza_botto at hotmail.com
>  > CC: r-help at r-project.org; kridox at ymail.com
>  >
>  > HI Eliza,
>  >
>  > You could try this:
>  > set.seed(15)
>  > mat1<-matrix(sample(1:2000,1776,replace=TRUE),ncol=444)
>  > colnames(mat1)<-paste("Col",1:444,sep="")
>  > res<-lapply(seq_len(ncol(mat1)),function(i) mat1[,seq(i,444,37)])
>  >
>  > #If you want only this from 1:37, then
>  >  res1<-lapply(1:37,function(i) mat1[,seq(i,444,37)])
>  >
>  >
>  > A.K.
>  >
>  >
>  >
>  > ----- Original Message -----
>  > From: eliza botto <eliza_botto at hotmail.com>
>  > To: "r-help at r-project.org" <r-help at r-project.org>
>  > Cc:
>  > Sent: Tuesday, December 25, 2012 12:03 AM
>  > Subject: [R] for loop not working
>  >
>  >
>  > dear R family,i have a matrix of 444 columns. what i want to do is
> the following.
>  > 1. starting from column 1 i want to select every 37th column on the
> way. more precisely i want to select column 1, 38,75,112,149 and so on.
>  > 2.starting from column 2, i again want to select every 37th column.
> which means 2,39,76,113,150 and so on.
>  > similarly starting from 3 till 37th column.
>  > i have tried following loop command which is not working.can anyone
> plz see whats wrong in that?
>  > >for (i in 1:37)
>  >
>  > >{
>  >
>  >
>  > >a<-e[,e[i]:444]
>  >
>  >
>  > >}
>  >
>  >
>  > > lapply(seq_len(1),
>  > function(i) {
>  >
>  >
>  > >a[,c(TRUE, rep(FALSE,1))]
>  >
>  >
>  > >})
>  > extremly sorry for bothering you once again..
>  > eliza
>  >     [[alternative HTML version deleted]]
>  >
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