Hi Mark,
Thank you for your answer !! it works but if i have "NA" in the vector z what i
shoud do to count its number in Z?
x y z
> 1 0 100
> 5 1 1500
> 6 1 NA
> 2 2 500
> 1 1 NA
> 5 2 2000
> 8 5 4500
>
i did the same but it gives me this error message:
[0 - 1000] [1000 - 3000] >3000
0 0 0
Warning message:
In inherits(x, "factor") : NAs introduced by coercion
Thank you
________________________________
De : Marc Schwartz <marc_schwa...@me.com>
Cc : r-help@r-project.org
Envoyé le : Lundi, 24 Août 2009, 18h33mn 52s
Objet : Re: [R] table function
On Aug 24, 2009, at 10:59 AM, Inchallah Yarab wrote:
> hi,
>
> i want to use the function table to build a table not of frequence (number of
> time the vareable is repeated in a list or a data frame!!) but in function of
> classes
[[elided Yahoo spam]]
>
> example
>
> x y z
> 1 0 100
> 5 1 1500
> 6 1 1200
> 2 2 500
> 1 1 3500
> 5 2 2000
> 8 5 4500
>
> i want to do a table summerizing the number of variable where z is in
> [0-1000],],[1000-3000], [> 3000]
>
> thank you very much for your help
See ?cut, which bins a continuous variable.
> DF
x y z
1 1 0 100
2 5 1 1500
3 6 1 1200
4 2 2 500
5 1 1 3500
6 5 2 2000
7 8 5 4500
> table(cut(DF$z, breaks = c(-Inf, 1000, 3000, Inf),
labels = c("0 - 1000", ">1000 - 3000", ">3000")))
0 - 1000 >1000 - 3000 >3000
2 3 2
HTH,
Marc Schwartz
[[alternative HTML version deleted]]
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