Geographic Polar Plot

Polar plot with vertical reference axis and direction changes clockwise, like a compass rose.

This function, named polargeo.m, is based on MATLAB's polar plotting function. The polar function has been modified so that the reference axis is oriented vertically instead of horizontally and the direction (bearing, angle) values change from 0 to 360 degrees in a clockwise manner. Thus the polar plot is oriented in a geographic sense, with the reference pointing to True North. This function is extremely useful for plotting geographically referenced data, for example, the range (distance) and true bearing (direction) of an aircraft from a stationary radar site.
Lines 120, 155 and 156 in the polar function were modified (sine terms were changed to cosine terms and cosine terms were changed to sine terms).