plotrix (version 2.0.3)

pie3D: Display a 3D pie chart

Description

Displays a 3D pie chart with optional labels.

Usage

pie3D(x,edges=100,radius=1,height=0.3,theta=pi/6,border=par("fg"),
  col=NULL,labels=NULL,labelpos=NULL,labelcol=par("fg"),labelcex=1.5,
  explode=0,...)

Arguments

x

a numeric vector for which each value will be a sector

edges

the number of lines forming an ellipse

radius

the radius of the pie in user units

height

the height of the pie in user units

theta

The angle of viewing in radians

border

The color of the sector border lines

col

The colors of the sectors

labels

Optional labels for each sector

labelpos

Optional positions for the labels

labelcol

The color of the labels

labelcex

The character expansion factor for the labels

explode

The amount to "explode" the pie in user units

...

graphical parameters passed to plot

Value

• The bisecting angle of the sectors in radians.

Details

pie3D scales the values in x so that they total 2*pi, dropping zeros and NAs. It then displays an empty plot, calculates the sequence for drawing the sectors and calls draw.tilted.sector to draw each sector. If labels are supplied, it will call pie3D.label to place a label for each sector. If supplied, the number of labels, label positions and sector colors must be at least equal to the number of values in x. If the labels are long, it may help to reduce the radius of the pie.

See Also

pie3D.labels, draw.tilted.sector

Examples

pieval<-c(2,4,6,8)
 pie3D(pieval,labels=c("TWO","FOUR","SIX","EIGHT"),explode=0.1,main="3D PIE")