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Examples:
MATLAB Plots
In this group
of examples, we are going to create several MATLAB plots.
2D Cosine Plot
y=cos(x), for 
You can type this in an 'm-file':
% Simple
script to plot a cosine
% vector x
takes only 10 values
x = linspace(0, 2*pi, 10);
y = cos(x);
plot(x,y)
xlabel('x')
ylabel('cos(x)')
title('Plotting a cosine')
grid on
The result is:
If we use 100 points rather than 10, and evaluate two cycles instead of
one (like this):
x = linspace(0, 4*pi, 100);
We obtain a different curve:
Now, a variation with line-syles
and colors
(type 'help plot'
to see the options for line-types and colors):
clear; clc; close all;
% Simple
script to plot a cosine
% vector x
takes only 10 values
x = linspace(0, 4*pi, 100);
y = cos(x);
plot(x,y, 'ro')
xlabel('x (radians)')
ylabel('cos(x)')
title('Plotting a cosine')
grid on
Space curve
Use the command plot3(x,y,z)
to plot the helix:
If x(t)=sin(t),
y(t)=cos(t),
z(t)=(t)
for every t
in ,
then, you can type this code in an 'm-file' or in the command window:
% Another way
to assign values to a vector
t = 0 : pi/50 : 10*pi;
plot3(sin(t),cos(t),t);
You can use the 'help
plot3' command to find out more details.
From
'Matlab Plots' to
home
From
'Matlab
Plots' to 'Matlab Examples'


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