On Mon, Aug 17, 2009 at 12:51 PM, e-letter <inpost at gmail.com> wrote: > I have tried to add the delta (δ) symbol to the y axis label and the > result is &D, using the command: > > ...ylab="δt"... Try ylab = expression(delta*t) instead. Best, Michael -- Michael Knudsen micknudsen at gmail.com http://lifeofknudsen.blogspot.com/