hi,R-users: Now I plot some data with the name(aveobsdata) in column , How can I add the some number(e,g. the sample number) in each of the column? plot(aveobsdata,type='h',lwd=line_width,col=line_col,main=titleinfo,xlab=xxlab,ylab=yylab,xaxt = "n") axis(1, at = 1:nums, label = name) --