A seemingly simple problem has me stumped. Is it possible to choose the number of colour breaks for a gradient scale in the current version of ggplot2?
Here is a simple example: --------------------------------------------- x=-10:10 y=-10:10 dat=expand.grid(x=x,y=y) dat$z=dat$x^2+dat$y^2-100 ggplot(dat, mapping=aes(x=x, y=y, fill=z)) + geom_tile() + scale_fill_gradient2() --------------------------------------------- The image shows many (61) colours, but only 5 of them are shown in the legend. How do I change the legend to show, say, 10 colours? -- Karl Ove Hufthammer ______________________________________________ [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.
