I am working with a large sparse matrix trying replace all 1 values with 0. The normal method doesn't work. Here is a small example:
> x <- Matrix(0,nrow=10,ncol=10,sparse=TRUE) > x[,1] <- 1:2 > x 10 x 10 sparse Matrix of class "dgCMatrix" [1,] 1 . . . . . . . . . [2,] 2 . . . . . . . . . [3,] 1 . . . . . . . . . [4,] 2 . . . . . . . . . [5,] 1 . . . . . . . . . [6,] 2 . . . . . . . . . [7,] 1 . . . . . . . . . [8,] 2 . . . . . . . . . [9,] 1 . . . . . . . . . [10,] 2 . . . . . . . . . > x[x==1] <- 0 Error in .local(x, i, j, ..., value) : not-yet-implemented 'Matrix[<-' method Suggestions? Any solution must be memory efficient as my sparse matrix is large. dhs ______________________________________________ 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.
