Your method seems to only re-express the data "data.frame(x, g)" using
another format. The results are really from the generated data frame. Maybe
be not good.
> table(g)
g
0 1 2 3
7 9 8 6
  I hope to randomly split the value 'x' according to the different sample
sizes of different levels, displayed above. That is, 7 for level 0, 9 for
level 1, et al.
  Thanks.

2010/2/26 Henrique Dallazuanna <www...@gmail.com>

> Try this:
>
> split(data.frame(x, g), g)
>
> On Fri, Feb 26, 2010 at 3:55 PM, rusers.sh <rusers...@gmail.com> wrote:
> > Hi,
> >  I am using split function and wonder how to add the factor to the
> splitted
> > results.
> > #Example
> > n <- 3; nn <- 10
> > g <- factor(round(n * stats::runif(n * nn)))   #factor
> > x <- rnorm(n * nn) + sqrt(as.numeric(g))    #value
> > xg <- split(x, g)
> > xg
> > $`0`
> > [1]  0.82513702 -0.03911584  2.32955347  0.36745335  1.75572642
>  2.65461438
> >  0.41675829
> > $`1`
> > [1]  0.8583493  2.4264804 -0.3622378  3.1770015  0.5162129
> > $`2`
> >  [1] 1.7914651 1.1440121 0.8097543 1.2064742 1.6411988 1.3743778
> 1.7094387
> > 2.1204501 1.9330132 2.0731997
> > [11] 2.8931865 2.5825309 0.6978723
> > $`3`
> > [1] 3.0246214 1.6870782 0.9685926 1.6449350 0.9378751
> >> g
> >  [1] 2 2 3 2 1 3 2 3 3 1 2 2 2 2 0 0 3 0 2 2 1 1 2 2 0 1 2 0 0 0
> > Levels: 0 1 2 3
> >
> >  Anybody can tell me how to add the corresponding values of factor "g" to
> > the splitted results 'xg' to get a data frame?
> > Something like,
> >
> > Splitted/xg     factor/g
> > 0.82513702        0
> > -0.03911584       0
> > 2.32955347        0
> >    ...
> >  I know i can use "xg$'0',xg$'1',xg$'2',xg$'3'" to get the values of each
> > class and then add a new variable to indicate the factor.
> > But i hope to get a method to automatic do those things. Any ideas?
> >  Thanks.
> >
> >
> > --
> > -----------------
> > Jane Chang
> > Queen's
> >
> >        [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>



-- 
-----------------
Jane Chang
Queen's

        [[alternative HTML version deleted]]

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