There are several bootstrap packages available at CRAN that probably provide an elegant solution, but simply permuting the matrix is pretty easy
> data <- matrix(1:100,nrow=5) # matrix of 5 rows and 20 columns > x <- data[sample(1:5),] # permute the rows > y <- x[,sample(1:20)] # permute the columns to really scamble the matrix > z <- matrix(sample(data),nrow=5) Dave R. booop booop wrote: > Could anybody help me in mixing the matrix values randomly (first rows and > then columns)... > > for eg putting the 1 st row in the place of 3 rd and 3rd in place of 4 th > and 4th in place of 1st row ...something like this in columns also.. > > Please suggest me some ways.. > > thanks a lot.. > > with regards, > boopathy. > > > --------------------------------- > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > > -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ David W. Roberts office 406-994-4548 Professor and Head FAX 406-994-3190 Department of Ecology email [EMAIL PROTECTED] Montana State University Bozeman, MT 59717-3460 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
