create_rotation_matrix

pyhelpers.ops.create_rotation_matrix(theta)[source]

Create a rotation matrix (counterclockwise).

Parameters:: theta (int | float) – rotation angle (in radian)
Returns:: a rotation matrix of shape (2, 2)
Return type:: numpy.ndarray

Examples:

>>> from pyhelpers.ops import create_rotation_matrix

>>> rot_mat = create_rotation_matrix(theta=30)
>>> rot_mat
array([[-0.98803162,  0.15425145],
       [-0.15425145, -0.98803162]])