% PlotUnitCircle  Script file to plot a circle of radius one
%
% A circle of radius one is plotted in the current figure window. The
% script relies on the fact that exp(j*2*pi*t) defines a unit circle in the
% complex plane. Furthermore, it exploits that the plot command with a
% single complex-valued argument plots the real versus the imaginary part.
%
% Syntax:
%      PlotUnitCircle

NumPoints  = 500;
tt         = ( 0 : NumPoints ) / NumPoints; % tt goes from 0 to 1
UnitCircle = exp(j*2*pi*tt);

plot(UnitCircle)
axis('square')