[R] Counter

Philipp Pagel
Thu, 23 Jul 2009 10:59:30 -0000

On Thu, Jul 23, 2009 at 10:44:16AM +0000, amor Gandhi
wrote:
> Hi everyone,
>
> Is there any counter function in R for the following purpose:
> x <- matrix(c(1,1,0,2,1,0,0,2,0,1,2,1,2,1,0,1),nrow=4)

> As I would like to know how many zeros, ones, and twos in each row of x?

Yes there is:

As you are interested int he counts by row you can use apply:

apply(x, 1, table)

cu
	Philipp

--
Dr. Philipp Pagel
Lehrstuhl f?r Genomorientierte Bioinformatik
Technische Universit?t M?nchen
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany