Why is the Zernike aberration calculated by this module different from that in MATLAB function?

[Ezreal147]

This is the fourth term with a coefficient of 1 calculated by this module：

and this is calculated by matlab function:

the matlab function can be downloaded here.

So, why the results are different? Which is correct?

[danieleancora]

At a glance the results seems identical. The colormap distorts your perception outside the circle, cause you have -1 with the Matlab representation and 0 with this module. Just export a .dat output and compare both by subtracting them element-wise.