[R] Hmisc xYplot: two ablines?

[Michael Kubovy]

Dear r-helpers,

Happy New Year.

To a plot

xYplot(lo ~ vaR, groups = v, data = abc1.fp,aspect = "xy",
	xlab=expression(frac(abs( bold(v) ),abs( bold(a) ))),
	ylab = grid::textGrob(expression(paste(log, frac( italic(p) ( italic 
(v) ), italic(p) ( italic(a) )))) ),
	abline =list(a = 5.71442, b = -5.71442, col = 2)
)

I would like to add another abline such as abline = list(a = 8.8460,  
b = -8.8460, col = 3). Any advice?


_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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