[R] Deleting Rows/Columns

[Weiwei Shi]

put - before the column id you want to delete.

like this:
> a<-data.frame(c(1,2,3), c(4,5,6), c(7,8,9))
> a
  c.1..2..3. c.4..5..6. c.7..8..9.
1          1          4          7
2          2          5          8
3          3          6          9
> a[,-1]
  c.4..5..6. c.7..8..9.
1          4          7
2          5          8
3          6          9

HTH

On 11/7/05, Xiaofan Li <xiaofan.mlist at gmail.com> wrote:
> Sorry to bother the group but I am wondering if there are some official ways
> to delete a row/column, i.e., some functions of dataTable manipulation? For
> rows operation I use subset() but what about columns?
>
>
>
> Any advice is welcome and I will be more than grateful if somebody could
> make a summary on this issue.
>
>
>
> Xiaofan
>
>
>
> ---------------------------------------------------------
>
> Xiaofan Li
>
> Cambridge Computational Biology Institute
>
> Department of Applied Mathematics and Theoretical Physics
>
> University of Cambridge, CB3 0WA, United Kingdom
>
> Tel +44 7886 614030, Email xl252 at cam.ac.uk
>
>
>
>
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--
Weiwei Shi, Ph.D

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