circles {imager}

Add circles to plot

Description

Base R has a function for plotting circles called "symbols". Unfortunately, the size of the circles is inconsistent across devices. This function plots circles whose radius is specified in used coordinates.

Usage

circles(x, y, radius, bg = NULL, fg = "white", ...)

Arguments

x

centers (x coordinate)

y

centers (y coordinate)

radius

radius (in user coordinates)

bg

background colour

fg

foreground colour

...

passed to polygon, e.g. lwd

Value

none, used for side effect

Author(s)

Simon Barthelme

See Also

hough_circle