Re: [R] Plotting a Trivial Matrix

2010-02-26 Thread baptiste auguie
On 26 February 2010 11:12, Lorenzo Isella wrote: > Thanks Augustine and Jim for the prompt reply. > You both answered my question. To avoid another post, I would simply like to > know if something along these lines is doable also with ggplot2. > Many thanks > > Lorenzo > Augustine??? Anyhow, wi

Re: [R] Plotting a Trivial Matrix

2010-02-26 Thread Tobias.Mathow
What about http://www.phaget4.org/R/image_matrix.html try function "f.matrix.plot" Tobias Mathow Forest Research Institute Baden-Wuerttemberg (FVA) Wonnhaldestr. 4, D- 79100 Freiburg Phone: ++49-761-4018-365 www.fva-bw.de -Ursprüngliche Nachricht- Von: r-help-boun...@r-project.org

Re: [R] Plotting a Trivial Matrix

2010-02-26 Thread Lorenzo Isella
baptiste auguie wrote: Hi, A minimalist example using Grid graphics, library(RGraphics) bwImage <- function(m, cols=c("white", "black"), draw=TRUE, gp=gpar()){ g <- imageGrob(nrow(m), ncol(m), cols=cols[m+1], gp=gp) if(draw) grid.draw(g) return(g) } m

Re: [R] Plotting a Trivial Matrix

2010-02-26 Thread Jim Lemon
On 02/26/2010 07:29 PM, Lorenzo Isella wrote: Dear All, Consider a matrix (N x N) where each entry is either zero or one (can hardly get any simpler). Now, I would like to plot it as a 'chessboard' where every matrix entry is a black (1) or white (0) square. Whatever tool I use to plot it, it sho

Re: [R] Plotting a Trivial Matrix

2010-02-26 Thread baptiste auguie
Hi, A minimalist example using Grid graphics, library(RGraphics) bwImage <- function(m, cols=c("white", "black"), draw=TRUE, gp=gpar()){ g <- imageGrob(nrow(m), ncol(m), cols=cols[m+1], gp=gp) if(draw) grid.draw(g) return(g) } m <- matrix(rnorm(200) > 0,