Polar plot

Syntax: GRAPH\POLAR r theta
GRAPH\RADAR r theta
Qualifiers: \AXESONLY, \OVERLAY
Defaults: axes drawn
Examples: GRAPH\POLAR R THETA
GRAPH\POLAR\OVERLAY R2 T2
GRAPH\RADAR\AXESONLY R T

If either the \POLAR qualifier or the \RADAR qualifier is used, the input variables, r and theta, are assumed to represent polar coordinates, where r contains the radial components and theta contains the angular components, in degrees.

A polar plot is always autoscaled. The radial axis at 0° always has a minimum value of zero. The maximum value of the radial axis is determined by the data. All 360° are always displayed. By default, four radial axes are drawn, but any number of axes can be drawn using the POLARNAXES characteristic. Only the radial axis at 0° can have numeric labels and the optional text label. Circular grid lines can be drawn, and are controlled by the POLARGRID characteristic.

The location of the origin of the polar plot is controlled by the POLARORIGINX and POLARORIGINY characteristics, and the length of the radial axis is controlled by the POLARAXISLENGTH characteristic.

Use the \POLAR qualifier if you would like 0° to be horizontal through the origin. Use the \RADAR qualifier if you would like 0° to be vertical.

The user has control over the polar plot by means of the Polar Characteristics.

  GRAPH command
  Plotting symbols