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?
Many thank in advance,
Amor
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apply(x, 1, table) Uwe Ligges 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? > > Many thank in advance, > Amor > > > > > > [[alternative HTML version deleted]] > > > > ------------------------------------------------------------------------ > > ______________________________________________ > R-help at 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.
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 http://webclu.bio.wzw.tum.de/~pagel/
Try also: t( apply(x, 1, function(x) table( factor(x, levels = 0:2) ) ) ) # 0 1 2 # [1,] 1 2 1 # [2,] 1 3 0 # [3,] 3 0 1 # [4,] 0 2 2 See ?apply, ?table and ?factor for more details, examples and information. HTH, Jorge On Thu, Jul 23, 2009 at 6:44 AM, amor Gandhi <amorigandhi@yahoo.de> 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? > > Many thank in advance, > Amor > > > > > > [[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. > >[[alternative HTML version deleted]]