Line Smoothing for Matlab plot() command

The regular Matlab plot() command outputs curvy lines as if they are staircased due to the lack of proper antialiasing. A remedy for this is to use the hidden feature of line properties: LineSmoothing (plot(function,'LineSmoothing','on')). One example is shown below:

clear all; clc;

% Simple example showing the Line Smoothing property

freq=1e6;        % frequency of operation
omega=2*pi*freq; % angular frequency
T=1/freq;        % period

Nt=10;
dt=T/Nt;

c=3e8;           % speed of light
lambda=c/freq;   % wavelength
k=2*pi/lambda;   % wavenumber

Nx=20;
dx=lambda/Nx;

x=(-6*lambda):dx:(6*lambda);

% Evaluate $$ f(x)= sin(\omegat-kx) $$ at t=0
func= sin(omega*0-k*x);

% Plot
figure(1); clf; set(gcf,'Color',[1 1 1]);
subplot(2,1,1);
plot(x,func,'-b'); hold on;
title('No Line Smoothing');
Xlim([x(1) x(end)])

subplot(2,1,2);
plot(x,func,'-r','LineSmoothing','on')
title('With Line Smoothing');
Xlim([x(1) x(end)])

For more information and other tips on Matlab, please refer to the following website: undocumentedmatlab.com