[R] How to select a whole column? Thanks!
Paul Lemmens
P.Lemmens at nici.kun.nl
Tue Aug 3 10:58:49 CEST 2004
Hoi Jinsong,
--On dinsdag 3 augustus 2004 1:42 -0700 Jinsong Zhao <jinsong_zh at yahoo.com>
wrote:
> For instance, I hope to remove the V3~6 column, for all the value in
> those colume is zero.
>
> V3 V4 V5 V6 V7 V8 V9 V10
> 1 0 0 0 0 0.000 0.000 0.000 0.000
> 2 0 0 0 0 0.000 0.000 0.000 0.000
> 3 0 0 0 0 0.000 0.000 0.000 0.000
> 4 0 0 0 0 0.000 0.000 0.000 0.000
> 5 0 0 0 0 0.000 0.000 0.000 0.000
> 6 0 0 0 0 -0.001 -0.001 -0.001 -0.001
> 7 0 0 0 0 0.000 0.000 0.000 -0.001
> 8 0 0 0 0 0.000 0.000 0.000 -0.001
> 9 0 0 0 0 -0.009 -0.012 -0.015 -0.018
>
> I mean how to select the first four columns.
>
subset(df, select=-c(V3,V4,V5,V6))
--
Paul Lemmens
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