circles: Draw circles on a graphical display

In BillVenables/WWRGraphics: Traditional Graphics Enhancements for WWR

Description

A specialised front-end to the traditional graphics function, symbols

Usage

circles(x, ...)

## S4 method for signature 'numeric'
circles(
  x,
  y,
  radii = 1,
  maxradius = 0.75,
  fg = colour,
  colour = color,
  color = "black",
  bg = fill,
  fill = "transparent",
  add = TRUE,
  xpd = NA,
  ...
)

## S4 method for signature 'xy'
circles(x, ...)

## S4 method for signature 'formula'
circles(x, data = parent.frame(2), radii = 1, ...)

Arguments

x, y	any of the forms in which points in a scatterplot may be specified
...	additional arguments passed on to methods
radii	numeric: radii of the circles (relative, must be non-negative)
maxradius	absolute value of the maximum radius of the circles, in centimetres
fg, colour, colour	alternative specification names for circumference colours; may be a palette function
bg, fill	alternative names for the interior colours to use for the circles; may be a palette
add	logical: add to an existing plot, or make a new one?
xpd	graphics parameter

Value

invisible null value

Examples

z <- with(roundTrip, setNames(complex(real = Longitude, imaginary = Latitude), Locality))
plot(z, asp = 1, pch = 20, cex = 0.7, xlab = "Longitude", ylab = "Latitude")
lines(Oz, col = alpha("dark green", 0.5))
text(z, labels = names(z), pos = avoid(z), cex = 0.7)
circles(Latitude ~ Longitude, roundTrip, radii = sqrt(Population), fill = "pink")

BillVenables/WWRGraphics documentation built on Feb. 1, 2021, 12:13 p.m.