See also the matrixStats package on CRAN. /Henrik
On Fri, Sep 17, 2010 at 10:17 AM, Dennis Murphy <[email protected]> wrote: > Hi: > > Here's a simple example that you can tune to your needs: > > m <- matrix(rpois(100, 10), nrow = 10) > > # Function to compute summary statistics: > f <- function(x) c(min = min(x), med = median(x), mean = mean(x), max = > max(x)) > > # Apply to rows (index 1) > apply(m, 1, f) > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] > min 5.0 7.0 5.0 6.0 5.0 5.0 8.0 5.0 2.0 6.0 > med 11.5 9.5 10.0 9.5 9.0 8.0 10.0 10.0 6.0 10.0 > mean 11.1 9.8 10.4 10.3 9.6 7.6 10.5 9.3 6.6 9.8 > max 15.0 14.0 17.0 15.0 17.0 10.0 14.0 14.0 16.0 12.0 > > # Apply to columns (index 2) > apply(m, 2, f) > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] > min 3.0 6.0 5.0 6.0 2.0 5.0 5.0 5.0 8.0 6.0 > med 9.0 9.5 11.0 9.5 8.5 9.5 9.0 6.0 10.5 10.0 > mean 8.6 9.6 10.8 9.8 8.5 9.7 9.7 7.8 11.0 9.5 > max 12.0 15.0 15.0 17.0 14.0 15.0 17.0 14.0 16.0 14.0 > > HTH, > Dennis > > On Fri, Sep 17, 2010 at 9:08 AM, Halabi, Anan <[email protected]> wrote: > >> I made simulation with Weibull and create Matrix, >> How can I create mean/min/max/stdev on column or rows of matrix?, >> Thanks, >> >> ______________________________________________ >> [email protected] 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]] > > ______________________________________________ > [email protected] 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. > ______________________________________________ [email protected] 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.
