Thanks! It worked! There is another problem I want to subset the matrix 'red' in following manner: >dim(red) 23688 164 >a=red[1:23688,1:4] >b=red[1:23688,5:8] >c=red[1:23688,9:12] .............................. .............................. >z=red[1:23688,161:164] If there any efficient way to do it? cheers! Amit
> > On Thu, 1 Oct 2009, Amit Kumar wrote: > >> Hi! All, >> I am working with a large matrix of dimension 23689 x 162. Some of the >> values of this matrix is missing (NA). And it looks something like >> that: >> >>> dim(red) >> >> 23689 162 >> >>> red >> >> [,1] [,2] [,3] [,4] [,5] >> [1,] 2 NA 4 9 6 >> [2,] 5 NA 6 NA 1 >> [3,] NA 2 11 23 20 >> [4,] 2 1 21 NA 3 >> [5,] NA 7 NA 52 NA >> >> Here I want to convert NA to zero everywhere in the matrix. I do no >> want to omit NA using na.omit(red). I want output something like that: >>> >>> red >> >> [,1] [,2] [,3] [,4] [,5] >> [1,] 2 0 4 9 6 >> [2,] 5 0 6 0 1 >> [3,] 0 2 11 23 20 >> [4,] 2 1 21 0 3 >> [5,] 0 7 0 52 0 >> >> Please, help thanks. >> Amit >> >> ______________________________________________ >> 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. >> > ______________________________________________ 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.
