The image function in base graphics does the same type of plot, just different names and structure of the data (and the documentation says that the number of breaks should be 1 more than the number of colors).
Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Antje > Sent: Tuesday, May 05, 2009 1:12 AM > To: r-h...@stat.math.ethz.ch > Subject: [R] Heatmap without levelplot > > Hi there, > > as I'm not sure to understand the coloring levelplot uses, I'm looking > for > another easy way to create a heatmap like this: > > library(lattice) > mat <- matrix(seq(1,5, length.out = 12), nrow = 3) > mat[1,2] <- 3.5 > > my.at <- seq(0.5,5.5, length.out = 6) > my.col.regions <- rainbow(5) > > graph <- levelplot(t(mat[nrow(mat):1, ] ), at = my.at, col.regions = > my.col.regions) > print(graph) > > Can anybody help me with some hints or little examples? > > Antje > > ______________________________________________ > 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.
