[R] xyplot() and controlling panel.polygon() 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
USPS:     P.O.Box 400400    Charlottesville, VA 22904-4400
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         McCormick Road    Charlottesville, VA 22903
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Lab:        B019    +1-434-982-4751
Fax:        +1-434-982-4766
WWW:    http://www.people.virginia.edu/~mk9y/

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