ZernikeGrad¶
- lsst.ts.wep.cwfs.ZernikeGrad(z, x, y, axis, nMax=None)¶
Evaluate the gradient of Zernike polynomials in a certain axis.
- Parameters:
- znumpy.ndarray
Coefficient of Zernike polynomials.
- xnumpy.ndarray
X coordinate on pupil plane.
- ynumpy.ndarray
Y coordinate on pupil plane.
- axisstr
Integration direction. It can be “dx” or “dy”.
- nMaxint, deprecated
Maximum number of Zernike terms. Unused.
- Returns:
- numpy.ndarray
Integration elements of gradient part in pupil x and y directions.