[datatable-help] R - Comparison

[Nicolas Paris]

hello,
use ifelse that is vectorial function
x <- c( 0, 2, 5, 4, 1, 9 )
y <- ifelse(x<=3,"F",ifelse( 3 < x && x <= 6,"M",ifelse(6<x,"E","ERROR")))

2015-11-04 11:01 GMT+01:00 Ash111 <hamza_essid at hotmail.fr>:
> Hello everyone,
>
> I have a vector X = [ 0 2 5 4 1 9 ]
> I want to build another vector Y  wich will have the same length as X and
> which contains the comparison of the elements of x as follows :
> if x < = 3: returns F
> if 3 < x < = 6: returns M
> if 6 < x: returns E
>
> I expected the result:
> Y = [F F M M F E ]
>
> How to do that with R ??
>
> Thank you :-)
>
>
>
> --
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