Dear Community, Just a short and simple question, but the code does not come to my mind. I want to plot the Resids by quarterly Data. But there are many quarters. Just rotate them, does not make the plot clearer/ easier to read. Is there a possibility to just show every 4th value on the x-axis ? How do I change the scale? require(lattice) xyplot(resid(fixed.reg1.1) ~ quartal,type="h", data=data.plm,scales = list(x = list(rot = 90)) ,ylim=c(-5,5)) Thanks a lot! And have a nice day. Katie [[alternative HTML version deleted]]