pie3D.labels: Display labels on a 3D pie chart

Description

Displays labels on a 3D pie chart.

Usage

pie3D.labels(radialpos,radius=1,height=0.1,theta=pi/6,
  labels,labelcol=par("fg"),labelcex=1.5,labelrad=1.25,minsep=0.3)

Arguments

radialpos

Position of the label in radians

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

labels

The label to display

labelcol

The color of the labels

labelcex

The character expansion factor for the labels

labelrad

The expansion for the labels around the pie.

minsep

The minimum angular separation between label positions.

Value

nil

Details

pie3D.label displays labels on a 3D pie chart. The positions of the labels are given as angles in radians (usually the bisector of the pie sectors). As the labels can be passed directly to pie3D, this function would probably not be called by the user.

pie3D.labels tries to separate labels that are placed closer than minsep radians. This simple system will handle minor crowding of labels. If labels are very crowded, capturing the return value of pie3D and editing the label positions may allow the user to avoid manually placing labels.

Examples

Run this code

# NOT RUN {
 pieval<-c(2,4,6,8)
 bisectors<-pie3D(pieval,explode=0.1,main="3D PIE OPINIONS")
 pielabels<-
  c("We hate\n pies","We oppose\n  pies","We don't\n  care","We just love pies")
 pie3D.labels(bisectors,labels=pielabels)
# }