[R] NADA Package: Referencing Data Frame Columns

[Rich Shepard]

On Tue, 7 Aug 2012, David Winsemius wrote:

> cenboxplot(chem&Vdis, chem$ceneq1, chem$era)
> _______________^
> Incorrect use of '&' when '$' was intended.

   Mea culpa, David! Thanks for catching my typo.

Rich