Digital Signal Processing Reference
In-Depth Information
4
1
A variable followed by a period then the single-quote character indicates the trans-
pose of that variable. The notation:
A.
simply represents the transpose of the array A. We can obtain the same eect by
using transpose(A) instead. The example below shows the transpose of A, that is,
views it as a 4 by 1 matrix instead of a 1 by 4 matrix. We can verify this with the
size function. On a matrix like C, the result is to swap the rows with the columns.
Similarly, we see that C is a 3 by 4 matrix, while the transpose of C is 4 by 3.
>> A.
% transpose A
ans =
20
1
9
16
>> size(A.)
ans =
4
1
>> C.
% transpose C
ans =
0
4
8
1
5
9
2
6
10
3
7
11
>> size(C.)
