X-Axis Rotation Matrix

This example generates a rotation matrix that rotates a vector about the x-axis by a specified angle.

from csdl_om import Simulatorfrom csdl import Modelimport csdlimport numpy as np

class ExampleScalarRotX(Model):
    def define(self):        angle_val3 = np.pi / 3
        angle_scalar = self.declare_variable('scalar', val=angle_val3)
        # Rotation in the x-axis for scalar        self.register_output('scalar_Rot_x',                             csdl.rotmat(angle_scalar, axis='x'))

sim = Simulator(ExampleScalarRotX())sim.run()
print('scalar', sim['scalar'].shape)print(sim['scalar'])print('scalar_Rot_x', sim['scalar_Rot_x'].shape)print(sim['scalar_Rot_x'])

[1.04719755]scalar_Rot_x (3, 3)[[ 1.         0.         0.       ] [ 0.         0.5       -0.8660254] [ 0.         0.8660254  0.5      ]]