polygon2: polygon2

In raredd/plotr: More plotting functions and examples

polygon2

Description

Draw regular polygons as plotting characters. This function calculates the {x,y} coordinates for given centroids and radii and passes each pair of vectors to polygon to draw. Note that all arguments except x, y, radius, sides, and srt are passed directly to polygon, so see ?polygon for additional details.

Usage

polygon2(
  x,
  y = NULL,
  radius,
  sides = 6,
  srt = 0,
  density = NULL,
  angle = 45,
  border = NULL,
  col = NA,
  lty = par("lty"),
  fillOddEven = FALSE,
  ...
)

Arguments

x, y	x- and y-coordinate vectors of polygon centroids
radius	distance from centroid to each vertex
sides	number of sides for polygons; since only regular polygons may be plotted, possible values are (1:360)[360L %% 1:360 == 0L]
srt	rotation in degrees for polygon
density	density of shading lines in lines per inch
angle	slope of shading lines, given as an angle in degrees (counter- clockwise)
border	polygon border color
col	polygon fill color
lty	line type to be used for border and/or shading lines
fillOddEven	logical controlling polygon shading mode
...	additional graphical parameters such as xpd, lend, ljoin, and lmitre passed to par

Examples

## sides can be any of
(sides <- (1:360)[360L %% 1:360 == 0L])
plot.new()
for (ii in sides)
  polygon2(0.5, 0.5, sides = ii)  ## okay
# polygon2(0.5, 0.5, sides = 7)   ## error

x <- mtcars$mpg
y <- mtcars$wt
plot(x, y, type = 'n', asp = 1)
polygon2(x, y, density = 30, angle = 90, col = mtcars$gear)
polygon2(x, y + 1, srt = 30, lty = 'dotted', col = 'transparent')
polygon2(x, y + -2, radius = .5, sides = 5)

raredd/plotr documentation built on Nov. 19, 2023, 4:09 a.m.