Uwe Ligges wrote:
> Guojun Zhu wrote:
>
>
>>I guess this is really basic. But I do not find an
>>answer yet. I have a big data.frame. I would like to
>>divede them into 10 deciles accounding to one of its
>>member. Then I need a number for each decile with
>>some computaion within each group. How to devide it?
>
>
> For example, the result of cut() as a new variable to the data.frame and
> afterwards split() the data.frame by the resulting factor.
Or
library(Hmisc)
xg <- cut2(x, g=10) # labels deciles nicely
Frank
>
> Uwe Ligges
>
--
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
