MATLAB Octave CLI
Internal
Comments
% this is a comment
Prompt
PS1('>> ')
In-Line Operations
1 + 2 2 - 1 1 * 2, 2 * C % where C is a matrix 2 / 1 2 ^ 6
Logical operations
Equality:
1 == 2
Non-equality:
1 ~= 2
Logical AND:
1 && 0
Logical OR:
1 || 0
Variable Assignment
Also see:
Scalar Variable Assignment
<scalar-variable-name> = <variable-value>
Vector Variable Assignment
Assignment and literal initialization:
<vector-variable-name> = [ v1 v2 v3 ... ] % An (1, n) vector <vector-variable-name> = [ v1; v2; v3; ... ] % An (n, 1) vector
Other Types of Vector Initialization
Start from "start-value" (inclusively), increment with "increment-step" until the value is strictly larger than "end-value":
v = <start-value>:<increment-step>:<end-value>
Start from "start-value" to "end:value" with increments of 1:
v = <start-value>:<end-value>
v = zeros(1, 3) v = zeros(3, 1) v = ones(1, 3) v = ones(3, 1)
Matrix Variable Assignment
Assignment and literal initialization:
<two-dimensional-matrix-variable-name> = [ v11 v12 ... v1n; v21 v22 ... v2n; ...; vm1 vm2 ... vmn ] % A (m, n) matrix.
Other Types of Matrix Initialization
C = zeros(2, 3) C = ones(2, 3)
Printing
To print the value of the variable, simply type the name of the variable:
<variable-name>
disp
disp(<variable-name>)
Also see format.
printf
printf fprintf sprintf
a = pi; sprintf('this is pi with 6 decimals %0.6f', a);
Also see:
format
Reset or specify the format of the output produced by disp and the normal output mechanism.
Also see:
short
Fixed point format with 5 significant figures in a field that is a maximum of 10 characters wide.
long
loose
cd
Modify the current directory.
pwd
Print working directory.
clear
Delete the names matching the pattern from the symbol table. The pattern is a simplified regular expression, with '?', '*', '[...]'. With no arguments, all user-define variables (local and global) are deleted.
close
Close figure windows.
clc
Clears the terminal screen and move the cursor to the upper left corner.
fprintf
Like printf, just that the output is written to the FID stream instead of stdout.
load
Load the named variables from the file. If no variables are named, all variables found in the file will be loaded.