fftdemo1.m

% Define parameters
Fs = 10;                        % Sampling Frequency
Ts = 1/Fs;                      % Sampling Period
N = 32;                         % Total Number of Samples
n = 0:N-1;                      % Samples
t = Ts*(n);                     % Sampled times

y = cos(2*pi*t);                % Discrete signal
% Plot the signal and its discrete counter-part
figure
stem(t,y,'filled')
hold on;
% The 'continuous signal' (interpolated and highly sampled signal)
plot(linspace(min(t),max(t),length(0:.01:max(t))),cos(2*pi*(0:.01:max(t))))
title(['Sampled Signal with Fs = ',num2str(Fs)])