The default in R is to plot points as large open circles. I think
these are pretty ugly and not very effective in many plots. Instead
I use smaller, filled points. I add pch=16,cex=0.4 as an
additional argument to the plotting command (e.g., plot(),points(),etc.)
when plotting points, e.g.:
Keywords: R, points, plotting, scatterplots, plots, circles, filled
Last modified 4/2/06.