antipolygon {RFOC}R Documentation

Fill the complement of a polygon

Description

Fill a plot with a color outside the confines of a polygon.

Usage

antipolygon(x, y, col = 0, corner = 1)

Arguments

x x coordinates of polygon
y y coordinates of polygon
col Fill color
corner Corner on the plot to connect to at the end: 1 = LowerLeft(default) ; 2:UpperLeft 3 = UpperRight; 4=LowerRight

Details

antipolygon uses par("usr") to determine the external bounds of plotting region.

Value

Used for graphical side effect

Note

If the figure is resized after plotting, filling may not appear correct.

Author(s)

Jonathan M. Lees <jonathan.lees@unc.edu>

See Also

polygon, par

Examples


#########  some data points to plot:
x = runif(100)
y = runif(100)

plot(x,y)

###########   create polygon:
pp =list(x=c(0.231,0.316,0.169,0.343,0.311,0.484,0.757,
         0.555,0.800,0.563,0.427,0.412,0.203),
     y=c(0.774,0.622,0.401,0.386,0.138,0.312,0.200,0.459,
        0.658,0.624,0.954,0.686,0.813))

polygon(pp)

antipolygon(x=pp$x, y=pp$y,col='blue')


[Package RFOC version 1.0-5 Index]