Polar plots

Polar plots are generated by changing the current coordinate system to polar before issuing a plot command. The option set polar tells gnuplot to interpret input 2D coordinates as <angle>,<radius> rather than <x>,<y>. Many, but not all, of the 2D plotting styles work in polar mode. The figure shows a combination of plot styles lines and filledcurves. See set polar, set rrange, set size square, set theta, set ttics.