On Wed, Aug 11, 2010 at 10:14 PM, Brian Tsai <btsa...@gmail.com> wrote: > Hi all, > > I'm interested in doing a dot plot where *both* the size and color (more > specifically, shade of grey) change with the associated value. > > I've found examples online for ggplot2 where you can scale the size of the > dot with a value: > > http://had.co.nz/ggplot2/graphics/6a053f23cf5bdfe5155ab53d345a5e0b.png > > Or scale the color with the value: > > http://had.co.nz/ggplot2/graphics/b17bf93530ff6695afb366e65677c17f.png > > both of which are from here: > http://had.co.nz/ggplot2/geom_point.html > > but I've been playing around with ggplot2 and couldn't figure out how to do > both at the same time - ideally i want size to increase with a value, and > the shade of grey to get lighter with increasing value.
qplot(mpg, wt, data = mtcars, colour = qsec, size = qsec) + scale_colour_grey() Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.
