[Radiance-general] gendaylit and gensky

[Thomas Bleicher]

On 26 Jun 2008, at 07:36, ZZ wrote:

> Dear all,
>
> Could anybody tell the differences between the gendaylit and gensky?

gensky is the original program to generate sky descriptions
that comes with Radiance. It can be used to create CIE standard
sky situations.

gendaylit creates the sky description following the Perez
sky model. It is more suited to model different atmospheric
conditions if you know how the parameters work. You can find
the man page here:

http://caad.arch.ethz.ch/CAAD/ray/man_html/gendaylit.1.html

If you just want to do typical illuminance calcs for standard
situations you can happily stick with gensky.

Regards,
Thomas