[R] Boxplot superscript y-axis

Dear list, I need to include in a superscript number (-1) in a y-axis label of a boxplot graphic. I tried the following line: boxplot(five$gr13~five$Code, xlab=Species code, ylab=substitute(paste(DGL growth (cm.yr^{-1}, It returns the following error message: Error in DGL growth (cm.yr^{ :

Re: [R] Boxplot superscript y-axis

, Carlos Rivera -Mensaje original- De: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] En nombre de eduardo van den Berg Enviado el: martes, 29 de mayo de 2012 17:24 Para: r-help@r-project.org Asunto: [R] Boxplot superscript y-axis Dear list, I need to include