calculate_gamma_values#

sunkit_image.asda.calculate_gamma_values(vx, vy, factor=1, r=3)[source]#

Calculate gamma1 and gamma2 values of velocity field vx and vy.

Parameters:

vx (numpy.ndarray) – Velocity field in the x direction.
vy (numpy.ndarray) – Velocity field in the y direction.
factor (int, optional) – Magnify the original data to find sub-grid vortex center and boundary. Default value is 1.
r (int, optional) – Maximum distance of neighbor points from target point. Default value is 3.

Returns:

tuple – A tuple in form of (gamma1, gamma2), where gamma1 is useful in finding vortex centers and gamma2 is useful in finding vortex edges.