xyListFromGrob {gridGeometry}

Generate Coordinates from Grobs

Description

This function generates a set of coordinates (a list of (x,y) lists) from a grob.

Usage

xyListFromGrob(x, op = "union", closed = TRUE, ...)

Arguments

x

A grob.

op

A character value describing the operation to be used if x needs to be collapsed to a single shape. One of "intersection", "minus", "union", or "xor".

closed

A logical value indicating whether we coordinates describing a closed shape or an open shape from.

...

Arguments passed on to polyclip.

Value

The result is a list of lists, each with components x and y.

Author(s)

Paul Murrell

See Also

polyclip

Examples

r <- rectGrob(x=1/3, y=1/3, width=.4, height=.4)
xyListFromGrob(r)