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
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