On Oct 8, 2012, at 3:42 PM, 21rosit wrote: > <http://r.789695.n4.nabble.com/file/n4645497/square_root.jpg> > > How can I write the square root symbol in an axes label like in the attached > picture? ?plotmath plot(1,1, xlab=expression( sqrt("Square Root Argument")) ) David Winsemius, MD Alameda, CA, USA