axis.break		Put a slash or zigzag "break" in a plot axis
axis.POSIXct.tickpos	Calculate the tick positions for a POSIXct axis
clock24.plot		Plot values as lines/polygon on a 24 hour "clockface"
color.gradient		Calculate values for a color gradient
color.scale		Transform numeric values into a series of colors
floating.pie		Display a pie chart at a specified position
gantt.chart		Display a Gantt chart with task priority colors
get.gantt.info		Enter information for a Gantt chart
gradient.rect		Display a rectangle with an arbitrary color gradient
pie.labels		Place labels at specified radial positions
polar.plot		Plot values as lines/polygon on a 0-360 degree scale
radial.plot		Plot values as lines/polygon on a 0-2*pi radian scale
rescale			Linearly scale a vector of numbers to a new range
rgb.to.hex		Convert an RGB triplet into a hexadecimal color code
spread.labels		Spread out labels for irregularly spaced values
staxlab			Display staggered labels on an axis
thigmophobe		Find the direction away from the nearest other point
thigmophobe.labels	Place point labels away from the nearest other point
