Li Sparse Kernel

Implements the Li Sparse Kernel BRDF

Example

import sasktranif.sasktranif as skif
import math

brdf = skif.ISKBrdf('LI_SPARSE_KERNEL')
mjd            = 52393.3792987115;
location       = [0.0, 0.0, 25000.0, mjd];
[ok,brdfvalue] = brdf.BRDF( 600.0, location, 0.6, 0.7, -0.8)