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28 Chapter 2: MATLAB Basics
be included, even if only one is changed. We’ll examine more options for ma-
nipulating graphs in Chapter 5.
To close the graphics window select File : Close from its menu bar, type
close in the Command Window, or kill the window the way you would close
any other window on your computer screen.
Graphing with plot
The command plot works on vectors of numerical data. The basic syntax is
plot(X, Y) where X and Y are vectors of the same length. For example,
>>X=[123];
>>Y=[465];
>> plot(X, Y)
The command plot(X, Y) considers the vectors X and Y to be lists of the x
and y coordinates of successive points on a graphand joins the points with
line segments. So, in Figure 2-5, MATLAB connects (1, 4) to (2, 6) to (3, 5).
6
5.8
5.6
5.4
5.2
5
4.8
4.6
4.4
4.2
4
1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
Figure 2-5
