Bimal, in the "memisc" packages: ?panel.errbars This might be a good option for you. HTH, Sam -- View this message in context: http://r.789695.n4.nabble.com/plotting-data-when-all-you-have-is-the-summary-data-tp2173026p2173303.html Sent from the R help mailing list archive at Nabble.com.