CST Simulation： Local Density of Optical States LDOS

Does anyone know how to calculate the local density of optical states (LDOS) of an arbitrary structure using CST?

For calculation, this paper might help:
http://www.opticsinfobase.org/josab/...josab-26-5-987

This is a helpful paper for something like a photonic crystal, but I would like to calculate the LDOS for an arbitrary structure. An arbitrary structure could include a resonant dielectric sphere, a waveguide, or anything of that nature.... something that isn't periodic and preferably lossy to represent realistic structures.
So if I calculate the eigenvalues of an arbitrary structure using the eigenmode solver, I would need to do... Anyone got any examples?