[R] Sample
jim holtman
jholtman at gmail.com
Sat Jul 26 23:21:41 CEST 2008
like this:
> x
0-100 100-250 250+
a 9 18 16
b 33 25 27
c 21 19 17
d 25 22 19
e 40 39 19
f 77 45 29
> x[sample(nrow(x), 3),]
0-100 100-250 250+
e 40 39 19
c 21 19 17
a 9 18 16
> x[sample(nrow(x), 3),]
0-100 100-250 250+
c 21 19 17
e 40 39 19
d 25 22 19
> x[sample(nrow(x), 3),]
0-100 100-250 250+
b 33 25 27
f 77 45 29
c 21 19 17
> x[sample(nrow(x), 3),]
0-100 100-250 250+
f 77 45 29
c 21 19 17
a 9 18 16
On Sat, Jul 26, 2008 at 5:12 PM, Raphael Saldanha
<saldanha.plangeo at gmail.com> wrote:
> Hi!
>
> I have a data.frame, like this one:
>
>> data
> 0-100 100-250 250+
> a 9 18 16
> b 33 25 27
> c 21 19 17
> d 25 22 19
> e 40 39 19
> f 77 45 29
>
> If I request a sample of 2, I have the following:
>
>> sample(data, 2)
> 0-100 250+
> a 9 16
> b 33 27
> c 21 17
> d 25 19
> e 40 19
> f 77 29
>
> How can I request a sample from the rows???
>
>
> --
> Raphael Saldanha
> UFJF - Brazil
> saldanha.plangeo at gmail.com
>
>
> Woody Allen - "I don't want to achieve immortality through my work. I want
> to achieve it through not dying."
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem you are trying to solve?
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