[R] Syntax Help for xyplot()

[Rich Shepard]

On Mon, 24 Oct 2011, Dennis Murphy wrote:

> xyplot('TDS'$quant ~ 'Cond'$quant | burns.tds.anal$site )

Dennis,

xyplot('TDS'$quant ~ 'Cond'$quant | burns.tds.anal$site)
Error in "TDS"$quant : $ operator is invalid for atomic vectors

   I tried that earlier today.

Rich