[Radiance-general] Generate a daylight matrix for a skylight

[CHI-German Molina]

Alejandro,

Two points to remark here:

1.- The error you are getting comes from the "genklemsamp" program, and not
from rcontrib. The "View Up" is, by default, "up" (0,0,1); but that is also
your view direction. You will have to specify a "view up" that represents
the "top of your skylight", i.e., the superior part.

2.- the -m option of rcontrib has to be filled with a material in your
scene. In your case is "skymat". the -e option, in this cases, is what
chooses the Reinhart subdivition (MF:1, MF:2, MF:3, ...), the higher, more
sky subdivitions you get. The "b" is the number of the sky subdivition
(bin) and the "bn" is the number of sky subdivitions. These values are
related to the function you are using (reinhart.cal); and the only one you
would need to change is the MF:X option.

Hope it helps.


2014-07-16 6:08 GMT-04:00 Alejandro Pacheco Diéguez <paxeco2205 at hotmail.com>
:

> Hi!
>
> I am trying to create a daylight matrix for a skylight on a horizontal
> roof following the three-step method tutorial and I get the following error
> message:
>
> C:\Radiance\bin>genklemsamp -vd 0 0 1 aa_ape.rad | rcontrib -c 1000 -e
> MF:3 -f reinhart.cal -b rbin -bn Nrbins -m skymat -faf aa_octree.oct >
> aa_dmx.dmx
> *vwright: view up parallel to view direction*
>
> *aa_ape.rad contains a horizontal rectagle placed over the exterior
> aperture of the skylight.
>
> I am trying to understand the different options in rcontrib but it seems
> like I lack the knowledge to fully understand its description. Is there a
> more basic description that could help me understand it better? For
> example, I think I am supposed to describe the sky material somehow under
> -m but I am not sure how to do that. Also I don't understand the -e, the
> -b, -bn or the -faf options.
>
> Thanks in advance,
>
> Ale
>
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>


-- 
*Germán Molina L.*
Ingeniero Trainee
Hunter Douglas Chile S.A.
Celular +569 89224445

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