Pie charts in ggplot2 with variable pie sizes
I've tried various ways to get a facet_grid of pie charts in ggplot2 to vary width/radii according to another variable (strength). geom_bar accepts width=0.5 as a parameter but it is ignored once coord_polar is added. Adding width=0.5 to the ggplot aes or adding a aes to geom_bar doesn't work. I can't see any other relevant options for coord_polar . What's the easiest way to do this? The code below makes a nice grid of pie charts but doesn't change the sizes of the pie charts. What am I missing? mydata <- data.frame(side1=rep(LETTERS[1:3],3,each=9),side2=rep(LETTERS[1:3],9,each=3),widget=rep(c