[R] Conditional Splitting a Vectors into Two Vectors

Peter Ehlers ehlers at ucalgary.ca
Tue Jul 6 08:59:24 CEST 2010


On 2010-07-06 0:39, Gundala Viswanath wrote:
> Suppose I have two vectors of same dimensions:
>
>      x<-c(0.49534,0.80796,0.93970,0.99998)
>      count<-c(0,33,0,4)
>
> How can I group the vectors 'x' into two vectors:
>
>   1. Vector `grzero` that contain value in x with `count` value greater
> than 0 and
>   2. Vector `eqzero` with value in x with `count` value equal to zero.
>
> Yielding
>
>      >  print(grzero)
>      >  [1] 0.80796 0.99998
>      >  print(eqzero)
>      >  [1] 0.49534 0.93970
>
> Regards,
> G.V.
>

It might be time to work your way through
'An Introduction to R'.

Anyway, here you want conditional extraction:

  x[count > 0]
  x[!(count > 0)]  ##or equivalent


   -Peter Ehlers



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