filledcircle: adds colored circle to a plot

In shape: Functions for Plotting Graphical Shapes, Colors

adds colored circle to a plot

Description

plots (part of) outer and inner circle and colors inbetween; color can be a palette.

Usage

filledcircle(r1 = 1, r2 = 0, mid = c(0,0), dr = 0.01, from = -pi, to = pi, 
  col = femmecol(100), values = NULL, zlim = NULL, lwd = 2, lcol = NA, ...)

Arguments

r1	radius of outer circle.
r2	radius of inner circle.
mid	midpoint of circle.
dr	size of segments, in radians, to draw circle (decrease for smoother).
from	starting angle for circle segment, radians.
to	final angle for circle segment, radians. The segment is drawn counterclockwise. The default is to draw a full circle.
col	color palette to be used; also allowed are two extremes or one value.
values	if not NULL, a matrix providing (radius,z-values) couples, used for coloring. .
zlim	Only if values is not NULL: the minimum and maximum z values for which colors should be plotted, defaulting to the range of the finite values of the second column of values.
lwd	width of external line.
lcol	line color.
...	arguments passed to R-function polygon.

Details

see filledellipse for details

Value

returns, as invisible a list containing "xyouter" and "xyinner", the points that define the outer and inner ellipse.

Author(s)

Karline Soetaert <[e-mail]>

See Also

filledshape, filledcylinder, filledellipse

Examples

color <-graycol(n = 50)
dr    <- 0.05
emptyplot(xlim = c(-2, 2), col = color[length(color)], 
          main = "filledcircle")
filledcircle(r1 = 1, mid = c(1, 1), dr = dr, 
          col = shadepalette(endcol = "darkblue")) 
filledcircle(r1 = 1, mid = c(-1, -1), dr = dr, 
          col = shadepalette(endcol = "darkred"))
filledcircle(r1 = 1, r2 = 0.5, mid = c(0, 0), dr = dr, 
          col = c(rev(color), color))
filledcircle(r1 = 1, mid = c(1, -1), dr = dr, 
          col = intpalette(c("red", "blue", "orange"), 100)) 
filledcircle(mid = c(-1, 1))
  
emptyplot(main = "filledcircle")

for (i in seq(0, 0.45, 0.05)) 
   filledcircle(r1 = i+0.05, r2 = i, 
                mid = c(0.5, 0.5), col = i*20)

shape documentation built on May 29, 2024, 5:07 a.m.