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Workspace Method doit_za_grid_optCalc
Zenith angle grid optimization for scattering calculation.
This method optimizes the zenith angle grid. As input it requires
a radiation field (cloudbox_field) which is calculated on a very
fine zenith angle grid (za_grid). Based on this field
zenith angle grid points are selected, such that the maximum
difference between the radiation field represented on the very
fine zenith angle grid and the radiation field represented on the
optimized grid (doit_za_grid_opt) is less than the accuracy
(``acc``). Between the grid points the radiation field is interpolated
linearly or polynomially depending on doit_za_interp.
Note: The method works only for a 1D atmosphere and for one
Authors: Claudia Emde