[Radiance-general] calculation of shading coefficient with Radiance?

[Valeria De Giuli]

Thank you Lars for your reply! It's not easy to find the properties of
the materials in all the spectrum... Anyway, now I know what to do in
case.
Best regards and thanks a lot,
Valeria

2008/3/18, Lars O. Grobe <grobe at gmx.net>:
> > thank you for your reply!  How can I change the contents of the channels?
>
>
> You do not have to "change" them, you must enter the values for any
>  simulation anyway. Define three channels you need, and enter them just
>  as you would do with red green and blue values in their corresponding
>  fields when defining reflection, transmission and emission of your
>  surfaces. Of course you must know the properties of you sources and
>  surface materials for these channels. The point is that in your mind,
>  you have to replace the meaning of the RGB-values, usually taken as
>  RedGreenBlue, with Channel1Channel2Channel3. Colors are just "channels"
>  of radiance in this meaning, so just change the wavelength and you can
>  use it for anything ;-)
>
>  Of course as Greg already wrote you should consider if the effects of
>  radiance that are modeled in Radiance are enough or if you need other
>  energy transports for your work, too.
>
>  CU Lars.
>
>
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