Vectors and Matrices in MATLAB
Contents
Defining vectors and matrices
A row vector is created with the command
b = [1 2 3 4]
b =
1 2 3 4
Other possibilities include
b = 1:4
b =
1 2 3 4
or
b = linspace(1,5,4)
b =
1.0000 2.3333 3.6667 5.0000
A column vector is obtained by typing
c = [2; 4; 6]
c =
2
4
6
or
c = [2 4 6]'
c =
2
4
6
A matrix can be defined by typing
A = [1 2 3
2 3 4
5 6 7
8 9 0]
A =
1 2 3
2 3 4
5 6 7
8 9 0
or
A = [1 2 3; 2 3 4; 5 6 7; 8 9 0]
A =
1 2 3
2 3 4
5 6 7
8 9 0
Some special matrices
B = zeros(4,2)
B =
0 0
0 0
0 0
0 0
E = eye(3)
E =
1 0 0
0 1 0
0 0 1
C = ones(3,2)
C =
1 1
1 1
1 1
Now we can define a block matrix
D = [A B; C E]
D =
1 2 3 0 0
2 3 4 0 0
5 6 7 0 0
8 9 0 0 0
1 1 1 0 0
1 1 0 1 0
1 1 0 0 1