[Radiance-general] Import from Optics5

[Marija Cvetkovic]

Hi,
I am trying to use actual data for glazing materials, and I've found that
Optics5 has a good database. Since it has exporter to Radiance, single or
multi layer glazings can be easily converted to Radiance format.
Resulting file has a form like:

void  glass       GlzSys_glass
0
0
3     0.807     0.875     0.849

void  BRTDfunc    GlzSys_front
10
      0.134     0.147     0.147
      0.740     0.803     0.779
      0 0 0
      .
0
9 0 0 0 0 0 0 0 0 0

void  BRTDfunc    GlzSys_back
10
      0.134     0.147     0.147
      0.740     0.803     0.779
      0 0 0
      .
0
9 0 0 0 0 0 0 0 0 0

My question is how should I use these data in Radiance scene description.
 I suppose that idea is to define window glass with 3 layers:
GlzSys_front  GlzSys_glass  GlzSys_back

Am I right?

One more question: does anyone know how this BRTD parameters are calculated 
from Optic5 data?

Thanks,
marija