This work around is sufficient: par(xaxt="n") plotCI(....) par(xaxt="s") axis(1,at=1:8,labels=xLabels) ---------- Forwarded message ---------- Date: Wed, 26 Nov 2003 09:15:10 -0500 (EST) From: Al Piszcz <apiszcz at solarrain.com> To: r-help at stat.math.ethz.ch Subject: plotCI : Disabling X axis labels ? I have my own set of labels for the X axis and typically apply them to other plot modes using: axis(1,at=1:n,labels=xLabels) Where n is the number of character strings in xLabels Is there a parameter to disable plotCI from creating its default labels for the X axis?