[Radiance-general] using turbidity in gensky

[Thomas Bleicher]

David

If you want to match measured values you should use the -R or -B options.
See the man page for details.

Regards,
Thomas

On Thu, May 5, 2011 at 6:56 PM, David Appelfeld <d.appelfeld at gmail.com>wrote:

> Hello Radiance users,
>
> I am trying to generate sky distribution during sunny day for my model to
> compare the results with the measured data of illuminance. It seems that the
> day when the measurements were obtained was very clear and I would like to
> decrease the turbidity in gensky to get higher global and vertical
> illuminance.
> When I decreased the turbidity from the default of 2.45 to 1 then the
> illuminance decrease, while when I increase -t option then the illuminance
> increase too. I would actually expect opposite, and that the illuminance
> will increase with lower turbidity since the turbidity should scattered
> light more and thus block the direct contribution and increase the diffuse
> contribution form the sky.
>
> Here is the gensky command I am using:
> gensky 9 5 $(printf "%02d:%02d" $h $m)CEST -a 55.964875 -o -12.4934 -m -15
> +s -t 1
>
> Does someone have had this problem before? Or is this as gensky should
> works?
>
> Thank you
> David
>
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>
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