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...quot;, xlab="number of clusters", type="l", data=randA1, strip=strip.custom(varnames=c(expression(sqrt(Bray-Curtis))) Is there a way of generating the square root symbol inside the strip or am I wasting my time. Thank you very much Regards Andrew http://www.nabble.com/file/p17187888/randA1.csv randA1.csv -- View this message in context: http://www.nabble.com/Mathematical-annotation-in-lattice-strip%3A-Is-it-possible--tp17187888p17187888.html Sent from the R help mailing list archive at Nabble.com.