Thanks, jthetzel. That works. Can you plot a legend with 2 lines using bquote? e.g. r^2 = x rmse = y "," and "\n" don't seem to work. -- View this message in context: http://r.789695.n4.nabble.com/superscript-tp3252881p3253088.html Sent from the R help mailing list archive at Nabble.com.