Hi Paticia, Perhaps ?scale is what you are looking for:
X=matrix(1:9,ncol=3) [,1] [,2] [,3] [1,] 1 4 7 [2,] 2 5 8 [3,] 3 6 9 scale(X) [,1] [,2] [,3] [1,] -1 -1 -1 [2,] 0 0 0 [3,] 1 1 1 attr(,"scaled:center") [1] 2 5 8 attr(,"scaled:scale") [1] 1 1 1 HTH, Jorge On Thu, May 8, 2008 at 6:48 AM, patricia garcía gonzález < [EMAIL PROTECTED]> wrote: > > Hi everyone, > > Is there any function to standardize a matrix. For sure it must, but i > can't find it. For standardize, i just mean, to make the mean as zero and > standard deviation as one.It is also call z-score. > Thanks in advance > > > > _________________________________________________________________ > MSN Video. > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]]
______________________________________________ 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.
