Hi Dan, The ability to do uneven tick values is something that the SGPLOT, SGPANEL, and GTL support naturally. See pages 12-13 of this paper for more details: http://support.sas.com/resources/papers/proceedings09/324-2009.pdf. Let me know if you have any more questions about it. I want to practise the uneven tick values in the figure 22 in your article, but where is dataset (physical end=eof?) you used in page 14, how to get the dataset? thanks! Muyi
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