R help - Jan 2010 - Delete components of a list

Dear all,

I have a question about deleting components of a list. For example, I have a
list that looks like this:

[[1]]
var1 var2 var3
   1    3    4     
   2    2    1   

[[2]]
var1 var2 var3
   2    5    1     
   2    1    7   

[[3]]
var1 var2 var3
   1    6    7     
   3    8    4   

How to delete, say, the first columns of the list or the second rows? Thank
in advance.

Lisa

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Try this:

# Exclude the first column:
lapply(l, '[', -1)

# Remove the second row:
lapply(l, '[', , i = -2)



On Mon, Jan 25, 2010 at 5:37 PM, Lisa <lisajca at gmail.com>
wrote:
>
> Dear all,
>
> I have a question about deleting components of a list. For example, I have
a
> list that looks like this:
>
> [[1]]
> var1 var2 var3
> ? 1 ? ?3 ? ?4
> ? 2 ? ?2 ? ?1
>
> [[2]]
> var1 var2 var3
> ? 2 ? ?5 ? ?1
> ? 2 ? ?1 ? ?7
>
> [[3]]
> var1 var2 var3
> ? 1 ? ?6 ? ?7
> ? 3 ? ?8 ? ?4
>
> How to delete, say, the first columns of the list or the second rows? Thank
> in advance.
>
> Lisa
>
> --
> View this message in context:
http://n4.nabble.com/Delete-components-of-a-list-tp1289732p1289732.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O

It works well. Thank you very much.

Lisa
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