xyListFromGrob  R Documentation 
This function generates a set of coordinates (a list of (x,y) lists) from a grob.
xyListFromGrob(x, op = "union", closed = TRUE, ...)
x 
A grob. 
op 
A character value describing the operation to be used if

closed 
A logical value indicating whether we coordinates describing a closed shape or an open shape from. 
... 
Arguments passed on to 
The result is a list of lists, each with components x
and y
.
Paul Murrell
polyclip
r < rectGrob(x=1/3, y=1/3, width=.4, height=.4) xyListFromGrob(r)
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