Polar Graph Plotting Application
by Ben Avison, modified by Brian Daulton

This application is an enhanced version of the Polar application on the RISC User Volume 5 Issue 3 magazine disc.

Polar enables graphs using polar co-ordinates to be generated in the form of Draw files. When run, an icon appears on the icon bar. Clicking on this icon opens a window, in which the function should be typed, the maximum size of the function (to enable the graph to be scaled), the number of line segments to be produced in the plot (to avoid very detailed plots), whether you require scale circles and/or radial lines to be drawn, and whether you want negative values of R to be plotted. Finally the filename of the Draw file should be entered: note the filename entered must be a full pathname (e.g. adfs::HardDisc.$.Graph). Clicking on OK or pressing Return in the filename field creates and saves the file.

The function for the graph is entered as R = <function of T>. In polar geometry, R is the distance of the point from the origin, and T (which stands for Theta) is the angle of the line joining the origin and the point, measured in radians.

Up to 3 separate graphs can be superimposed by enterering a colon (":") between the functions in the first window. 

 RISC User 1992
