Happy Friday fellow R users.

I need some help - I am trying to make a graph using ggplot 2 of some lead isotope ratios. Normally, the isotope mass number appears as a  superscript before the chemical symbol. However, I cannot figure out how to do this ggplot2's axis labels. The closest I have come is using "." In front of the numbers I am superscripting e.g:


ggplot(.... +xlab(expression(.^207*"Pb/"*.^206*"Pb"))+ylab(expression(.^208*"Pb/"*.^206*"Pb")

I have searched for this and have not had any luck so far... any suggestions?

VR

Jim

James T. Durant, MSPH, CIH
Emergency Response Coordinator
DIvision of Toxicology and Environmental Medicine
US Agency for Toxic Substances and Disease Registy

Mailing Address:

4770 Buford Highway, MS F-62
Atlanta, Georgia 30341

Telephone:
770-488-0668 (office)
770-378-1695 (cell)


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