[R] xyplot() and controlling panel.polygon()

[Michael Kubovy]

Dear R-helpers,

How do I tell panel.polygon what greoup and panel it applies to whithin
xyplot(y ~ x | c, groups = g
	panel = function(x, y, groups, ...){
	        panel.polygon(x = xpol[c, g], y = ypol[c, g], default.units  
= 'native')
		panel.xYplot(x, y, groups, ...)
		llines(x = c(1, 6),  y = c(-24.283333, 35.941667), lwd = 2, lty =  
3, col = 4)
     }
x[c, g] and y[c, g] describe the polygon I want plotted for group g  
in panel c.
_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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