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GNU Octave

Creating a Matrix

To create a new matrix and store it in a variable so that it you can refer to it later, type the command

octave:1> a = [ 1, 1, 2; 3, 5, 8; 13, 21, 34 ]

Octave will respond by printing the matrix in neatly aligned columns. Ending a command with a semicolon tells Octave to not print the result of a command. For example

octave:2> b = rand (3, 2);

will create a 3 row, 2 column matrix with each element set to a random value between zero and one.

To display the value of any variable, simply type the name of the variable. For example, to display the value stored in the matrix b, type the command

octave:3> b