Hello R cracks The image() function requires strictly increasing x and y values and z as a matrix.
Actually, I don't have equally spaced variables, but anyway want to plot an colored image() (with z-information). An example of my problem is here: a<-data.frame(rnorm(100), rnorm(100), runif(100)*100) How can I plot this data as an image (x=a[,1], y=a[,2] and z=a[,3])-> according to ?image. It has to be possible to adapt the grid size so that every grid cell in the plot is coloured consequently. Thanks for your help Marc -- ______________________________________________ [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.
