MATLAB 2D Plot command

Introduction

The basic plot function in MATLAB is the plot linear plot command. The simple plot command takes two vectors X and Y and plots them in 2D space.

plot(X,Y)

The plot command can plot in color and with different symbols.

plot command

Let’s issue the plot command from the Command Window prompt. Create two vectors for the plot command.

>> x = linspace(-pi,pi,100);
>> y = tan(sin(x)) - sin(tan(x));
>> plot(x,y)

Screenshot

linspace creates a linearly spaced vector. For example,

linspace(low,high,N) created N points between low and high.

Sample Script

Lets write a simple script to add title , labels to the graph.

% Sample MATLAB Script to plot a function
% MATLAB Tutorials - www.TestingDocs.com

x = linspace(-pi,pi,100); % 100 linearly spaced points within [-pi,pi]
y = tan(sin(x)) - sin(tan(x)); % Plot function

plot(x,y);
xlabel('x-axis');
ylabel('y-axis');
title('MATLAB 2D Plot Demo - www.TestingDocs.com');

Run the script.

Notice that the graph now has a title and x,y axis labels.