Delete comment from: One R Tip A Day
For the bubble plot:
1. I was warned as below using R 2.8.1:
Warning message:
In symbols(rep(1:19, dim(original)[[2]]), rep(5:1, each = dim(original)[[1]]), :
"axes" is not a graphical parameter
2. I think dim(original)[[2]] can be replaced as ncol() (and number of rows to be nrow()) to make the code more tidy.
3. And another suggestion is to make use of the 'panel.first' argument to avoid redrawing the bubble plot if you want the grid lines, e.g.
symbols(1:10, 1:10, circles = runif(10), panel.first = grid())
this argument is actually from plot.default().
Jan 6, 2009, 11:55:00 PM
Posted to Statistical Visualizations - Part 2

