On Wed, Dec 17, 2008 at 03:36:44AM -0800, RON70 wrote:
>
> I have a dataframe with two columns :
>
> 11600 238'4
> 12000 218'0
[...]
> There are repeatations in 1st column and I want to use this as Level. Next I
> want to report for each level how many data points are there, with
> corresponding Level number. Is there any direct R function?
> table(foo$V1)
11600 12000 12200 12600 13000 14000 15000 16000 18000 19000 20000
2 2 2 1 1 2 2 2 2 2 1
or maybe
ggregate(foo$V1, by=list(foo$V1), FUN=length)
Group.1 x
1 11600 2
2 12000 2
3 12200 2
4 12600 1
5 13000 1
6 14000 2
7 15000 2
8 16000 2
9 18000 2
10 19000 2
11 20000 1
cu
Philipp
--
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany
http://mips.gsf.de/staff/pagel
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