How does one control the size and type of data symbols in pairs()? I am trying to use the little dot (as in type=".") with absolutely no success. Here is the pairs call I am using: pairs(data.frame, panel=function(x,y) {points(x,y); lines(lowess(x,y))}) or even simpler: pairs(data.frame, panel=panel.smooth) Any hints would be much appreciated.