Environmental Engineering Reference
In-Depth Information
uses the notation
ans
¼
in
order to indicate an answer to the given command. Sub-matrices of a matrix can be
called by using '
:
', as the following example illustrates:
As no variable is used in the command, MATLAB
®
Elements in the second line, second and third column are given in the answer.
The '
:
' without any numbers is used to indicate the entire range. In the example, the
entire first column of A is given
There are several special commands to input special types of matrices.
Vectors
are multi-element matrices, for which either the number of rows or the
number of columns is 1. Row vectors with constant increment can be specified
as follows:
v
is a row vector, containing all values between 2 and 5 with increment 0.5.
10
A column can easily be obtained by using the
transponation
operation, which in
MATLAB
is performed by the
'
:
®
10
The
comma
in common numbers is a
dot
in all mathematics software products, thus also in
MATLAB
.
®
