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...rplot and the labels at the x-axis are strings, which are rotated by 90?. But now the sub-title of the barplot is in between these labels, which does not look very nice... Could anybody help me finding the parameter-setting to prevent this? par(mai=c(1.5,1,1,0.6)) barplot(data, las=2, ylim = c(0,plotMax+1), ylab = "Percentage", main = filename, sub = subtitle) Thank you! Antje

...r in different colors. data1[2],data2[2],data3[2],data4[2] at the next x-axis label (named "position 2") with the same color scheme and so on over the whole length. I managed to plot one set in the following way: par(mai=c(1.5,1,1,0.6)) plotInfo <- barplot(data1, las=2, ylim = c(0,plotMax+1), ylab = "Percentage") arrows(plotInfo,data1,plotInfo, data1 + sd1, length=0.1, angle=90) arrows(plotInfo,data1,plotInfo, data1 - sd1, length=0.1, angle=90) could anybody give me a help on this? Antje