Dear R gurus, I have got stuck on how to customise the colorkey generated by levelplot and contourplot, in the lattice package. This best illustrated by an example:
library(lattice) levelplot(volcano^20/1e45,at=c(0,0.001,0.01,0.1,1,10)) The reason for raising the volcano dataset to the 20th power is to create a dataset with a large vertical exaggeration - this is similar in nature to the data set that I am dealing with. Now, if you look at the colorkey to the right of the plot, you'll see that its basically dominated by the interval 1:10, and that the 0.001:0.01 color is virtually invisible, even though it makes up quite a decent fraction of the actual plot (its the light pink/lavendar colour between the white and the magenta) . So the question is, how can I customise the colourkey so that it consists of five, equally spaced colour intervals, with the appropriate annotation - in this case I am essentially try to have a logarithmic distribution of the ticks, but you can imagine that there will be cases when one wants something completely custom. Cheers, Mark ______________________________________________ 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.
