Dear Lida,
Here is a solution. Please don't post in HTML. And provide an easy to use
example of the data. E.g. the output of dput(mydata)
set.seed(1234)
mydata <- matrix(
sample(
c(0, 1, 2, NA),
size = 30,
replace = TRUE,
prob = c(2, 1, 1, 1)
),
ncol = 6
)
idx <- apply(mydata, 1, function(x){any(x == 2)})
idx[is.na(idx)] <- FALSE
cbind(mydata, idx)
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey
2015-08-10 22:11 GMT+02:00 Lida Zeighami <lid.z...@gmail.com>:
> Hi there,
>
> I have a matrix contain 0,1,2, NA elements.
> I want to add a column to this matrix with name of "idx" . then for each
> row, I should put 1 in this column (idx) if there is at least one 2 in that
> row otherwise I should put 0 in this column!
>
> for example mydata:
>
> 125 255 558 2366 177 255
> aa 0 1 0 NA 0 0
> bb 1 1 0 NA 0 1
> cs 2 1 2 1 0 0
> de 0 1 0 NA 0 0
> gh 2 0 0 0 0 0
>
>
> my output should be:
>
>
> 125 255 558 2366 177 255 idx
> aa 0 1 0 NA 0 0 0
> bb 1 1 0 NA 0 1 0
> cs 2 1 2 1 0 0 1
> de 0 1 0 NA 0 0 0
> gh 2 0 0 2 0 2 1
>
> Thank you for your help.
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
