[Radiance-general] Spherical sensor

[Lars O. Grobe]

Hi Minki!
> I am sorry for my too late response to your kind comment. I read your 
> script and it is so helpful. I am using Radiance to calculate 
> ultraviolet intensity. So I don't need to convert radiance to 
> illuminance, but need to revise the script for multiply points sampling.
> Thank you as always.
The script can do that, you just need to remove the multiplication with 
Radiance's assumed luminous efficacy (179) and the color weighting 
(R*.265+G*.670+B*.065) in the last line. So let the script end as

(...)
| total -if3 -m

And remove the backslash and the last line. I am assuming that you have 
set equal values in all channels (R=G=B in all source, material 
definitions).

Unfortunately, especially for small light sources of high intensity, you 
must set a rather high sampling density N not to miss out important 
sources. The script sends out rays to random directions, other then 
Radiance's integrated direct calculation which keeps a list of sources 
with known locations to check.

Cheers, Lars.