As I understand the best process for getting a glazing system created in LBNL optics into Radiance is to export the Radiance file from optics, then run that file through optics2rad. This works for most systems, but I only get a header when I run the script on the following system:
#
# FileName= GlzSys.usr
# Product Name=
# NFRC ID= 30000
# Manufacturer Name= User
# Glazing Type= Glazing system
# Coated Side= Neither
# Transmittance= 0.393
# Front Reflectance= 0.143
# Back Reflectance= 0.096
# Thickness(mm)= 3.251
# Appearance=
#
void glass Existing_TruVue40_glass
0
0
3 0.398 0.440 0.430
void BRTDfunc Existing_TruVue40_front
10
0.163 0.139 0.105
0.365 0.404 0.394
0 0 0
.
0
9 0 0 0 0 0 0 0 0 0
void BRTDfunc Existing_TruVue40_back
10
0.102 0.095 0.083
0.365 0.404 0.394
0 0 0
.
0
9 0 0 0 0 0 0 0 0 0
When I run optics2rad on this file I get the following header output without the expected Radiance BRTDfunc definition:
# Output generated by /Applications/Radiance/current/bin/optics2rad from Existing_TruVue40.rad
#
# FileName= GlzSys.usr
# Product Name=
# NFRC ID= 30000
# Manufacturer Name= User
# Glazing Type= Glazing system
# Coated Side= Neither
# Transmittance= 0.393
# Front Reflectance= 0.143
# Back Reflectance= 0.096
# Thickness(mm)= 3.251
# Appearance=
#
