identity_matrix

compas.geometry.identity_matrix(dim)

Construct an identity matrix.

Parameters

dim (int) – The number of rows and/or columns of the matrix.

Returns

list of list – A list of dim lists, with each list containing dim elements. The items on the “diagonal” are one. All other items are zero.

Examples

>>> identity_matrix(4)
[[1.0, 0.0, 0.0, 0.0], [0.0, 1.0, 0.0, 0.0], [0.0, 0.0, 1.0, 0.0], [0.0, 0.0, 0.0, 1.0]]