6  Matrix

Square brackets delimit literal matrices. Commas separate elements on the same row. Semicolons separate rows. Commas may be replaced by spaces, and semicolons may be replaced by newlines. Elements of a matrix may be arbitrary expressions, assuming all the dimensions agree.

octave	description
[ x, y, ... ]	enter a row vector
[ y; y; ... ]	enter a column vector
[ w, x; y, z ]	enter a 2x2 matrix
rows columns	number of rows / comlumns of matrix
zeros ones	create matrix of zeros / ones
eye diag	create identity / diagonal matrix
rand randi randn	create matrix of random values
all	true if all elements nonzero
any	true if at least one element nozero
nnz	number of nonzero elements