Hi, want to shade the area between dotted lines: x=c(1,5);y=c(1,5) plot(y~x, type='n') abline(v=c(2,3), lty=2) sometnig simple needed. tried with polygon.... thx, robert -- View this message in context: http://r.789695.n4.nabble.com/shade-area-between-ablines-tp2537352p2537352.html Sent from the R help mailing list archive at Nabble.com.