[R] short way

Martyn Plummer plummer at iarc.fr
Tue Aug 29 14:35:56 CEST 2000

On 29-Aug-00 Pesl Thomas wrote:
> i want to replace certain values of a matrix.
> i know how to replace them when the values are in a vector.
> i tried the same way for a matrix and got this answer:
> la[la==0]<-1
> Error in [<-.data.frame(*tmp*, la == 0, value = 1) : 
>         matrix subscripts not allowed in replacement
> i found a way to do this with "for()",
> but i think this is the worst way to do it.
> So is there a better way?

Try this:

la <- ifelse(la == 0, 1, la)

r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list