The Gavrielides functions are derived from the Zernike functions. They are used to compute Zernike coefficients directly from wavefront gradient data, without requiring the wavefront to first be estimated through numerical integration.
Paul Fricker (2020). Gavrielides functions. (https://www.mathworks.com/matlabcentral/fileexchange/33302-gavrielides-functions), MATLAB Central File Exchange. Retrieved .
Cleaned up commented code in the MATLAB files.