MATLAB Subplots Example

In this tutorial, you will learn about MATLAB Subplot. A subplot is a function used to display multiple plots in a single figure window. It allows you to divide the figure into a grid of subplots and place a different plot in each section.

Subplots allow us to plot multiple charts on the same figure in a grid. The axes are created in tiled positions. We can create subplots using the subplot command.

Syntax

The general syntax is as follows:

subplot(m,n,k)

divides the figure into m x n  grid.

• m – number of rows in the grid

• n – number of columns in the grid

• k – kth  position of the subplot (numbered left to right, top to bottom)

Let’s create subplots for four sample trigonometric functions like:

• sin(x)
• cos(x)
• tan(x)
• sin(x)*cos(x)

We will create the four subplots in a 2×2 grid.

MATLAB Script

% Subplots Example - www.TestingDocs.com
% Creates 2x2 subplots

% Create x and y vectors 
x = linspace(-2*pi,2*pi,100);
y1 = sin(x);
y2 = cos(x);
y3 = tan(x);
y4 = sin(x).*cos(x);

% Create 4 Subplots
subplot(2,2,1);
plot(x,y1);
xlabel('x - axis')
ylabel('y - axis')
title('sin(x) plot');
grid on;

subplot(2,2,2);
plot(x,y2);
xlabel('x - axis')
ylabel('y - axis')
title('cos(x) plot');
grid on;

subplot(2,2,3);
plot(x,y3);
xlabel('x - axis')
ylabel('y - axis')
title('tan(x) plot');
grid on;

subplot(2,2,4);
plot(x,y4);
xlabel('x - axis')
ylabel('y - axis')
title('sin(x)*cos(x) plot');
grid on;

 

Uses

• Comparing multiple datasets visually

• Showing steps of a process side by side

• Displaying different aspects of the same data (e.g., histogram and boxplot)