length

Length of an object.

Syntax

• l = length(M)

Input argument

• M - a variable

Output argument

• l - the length of the largest array dimension in M.

Description

For matrix or N-dimensional array, length returns the number of elements along the largest dimension. For empty object, length returns 0. For scalar, length returns 1. For a vector, length returns the number of elements.

Example

length(ones(3, 0))
length(3)
length([1 2 3 4 5])
length(ones(3, 4, 5))

See also

size, numel.

History

Author

Allan CORNET