[R] contour plots

Hi All, I'm having difficulty making a contour plot a would like some help. A standard contourplot can be made by having an x,y, and some matrix (shape x*y) with contents: x = 1:10 y = 1:10 cont <- matrix(runif(100,min=1,max=2),nrow=10,ncol=10) filled.contour(x,y,cont) Looks very nice. Somet

[R] Patterns in histogram

I’ve been busy making some histograms and I would like to distinguish different groups. I’ve been doing it like this: a <- c(1,1,1,1,2,2,2) hist(a,breaks=c(0,1,2)) hist(a[3:5],breaks=c(0,1,2),col="red",add=TRUE) Basically plotting them over each other, I assume there is a better way…Anyway what