[R] Newbie needs to count elements in a row

[John Kane]

Could you just transpose the matrix?

Otherwise you can write a simple function that should work.
Try this
============================================================
-(mat1 <- matrix(c(1, 2, 3, NA, 10, 2, NA, 8, 9, NA),nrow=2))

gl <- function(x)length(x[!is.na(x)]

apply(mat1, 1, gl)

==============================================================

-- On Tue, 12/29/09, Verena Weber <VerenaWeber at gmx.de> wrote:

> From: Verena Weber <VerenaWeber at gmx.de>
> Subject: [R] Newbie needs to count elements in a row
> To: r-help at r-project.org
> Received: Tuesday, December 29, 2009, 8:49 AM
> Hi,
> 
> I have a n*m matrix and would like to count the number of
> elements not equal to NA in a ROW.
> 
> e.g.
> 
> x 1 2 3 NA 10
> y 2 NA 8 9 NA
> 
> Which function can I use to obtain 
> "4" for row x and 
> "3" for row y?
> 
> Could you help me? I found some functions for columns but
> not for rows...
> 
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> 
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