A matrix can be constructed from two or more vectors. If we wish to create a matrix v which consists of two columns, the first column containing the vector x (in column form) and the second column containing the vector z (in column form), we can use the following (where `x` and `z` are previously generated row vectors):

» v = [x',z'] v = 1 5 3 10 5 15 7 20 9 25 11 30

If we wished to look at the first column of v, we could use (where `:` indicates all rows, while the `1` indicates the first column)

» v(:,1) ans = 1 3 5 7 9 11

If we wished to look at the second column of v, we could use

» v(:,2) ans = 5 10 15 20 25 30

And we can construct the same plot as before by using the following plot command (`'--'` gives a dashed line): ...

Start Free Trial

No credit card required