Examples:
MATLAB Plots

In
this group
of examples, we are going to create several MATLAB plots.
We are going to produce some figures with simple scripts to show first
a small number of points, and we'll show then more points to see how
this affect the general image.
2D
Cosine Plot
y=cos(x), for
You can type this in an 'mfile':

% 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 linesyles
and colors
(type 'help plot'
to see the options for linetypes 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 'mfile' 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.
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'Matlab
Plots' to 'Matlab Examples'

