[Radiance-general] Re: Data files interpolation

[Greg Ward]

Hi Lucio,

You have the source code, so you are free to do what you like with  
it.  The linear interpolation routines are in src/rt/data.c.  You  
should be careful that whatever interpolant you use does not go  
outside the limits of the input data.  Bicubic interpolation is  
notorious for producing negative values on all-positive input data,  
something that can be problematic in a lighting simulation....

Cheers,
-Greg

> From: "loscotec\@libero\.it" <loscotec at libero.it>
> Date: January 24, 2008 3:45:44 AM PST
>
> Hello!
>
> I know that radiance do interpolate data files linearly.
>
> Is it possible to let it interpolete them in other ways?
>
> Same about light distribution data files.. beeing in the end data  
> files, I assume they are linerly interpolated as well, are they? Is  
> it possible to change their interpolation as well ?
>
> Lucio