[Radiance-general] Can't get gensky to work without sun...

[Guglielmetti, Robert]

If I had a nickel for every "doh moment" using Radiance, I wouldn't have
to do this crap anymore. =8-)

Have fun!
 
-Rob


On 7/27/11 8:40 AM, "P George Lovell" <p.g.lovell at st-andrews.ac.uk> wrote:

>Thanks Rob! I've just been hitting control+c each time I got the
>warning! Doh.
>
>Thanks so much!
>
>George
>
>
>On 27/07/2011 15:05, Guglielmetti, Robert wrote:
>> Hi George,
>>
>> The "no light sources found" error is because there is no sun in your
>>sky
>> model. The celestial hemisphere's sky glow is indeed just that, it's
>> modeled as a "glow" source in Radiance. Glows are only picked up in the
>> ambient calculation, so you need to have -ab set to at least 1. You have
>> -ab 5, so you should be good. As the message states, it's not an error,
>> merely a warning. You're good.
>>
>>
>> Rob Guglielmetti  IESNA, LEED AP
>> Commercial Buildings Research Group
>> National Renewable Energy Laboratory
>> 1617 Cole Blvd MS:RSF202
>> Golden, CO 80401
>> T. 303.275.4319
>> F. 303.630.2055
>> E. robert.guglielmetti at nrel.gov
>>
>>
>>
>>
>>
>> On 7/27/11 6:32 AM, "P George Lovell"<p.g.lovell at st-andrews.ac.uk>
>>wrote:
>>
>>> Hi Everyone,
>>>
>>> I'm trying to render some images for a perceptual experiment. When I
>>> render with a sunlit sky (+s) I have no problems, but the variations in
>>> illumination are too great - I need more uniformity. But when I change
>>> the options to no sun (i.e. overcast "-c", or sunny without sun "-s") I
>>> get an error from rpict:
>>>
>>> rpict: warning - no light sources found.
>>>
>>> Some key parameters:-
>>>
>>> gensky 01 01 13 +s -a 56.3400 -o  0 -m 0.00 -B 27.93<-- substitute "+s"
>>> with "-c" or "-s"
>>> skyfunc glow skyglow 0 0 4 1 1 1 0
>>> skyglow source sky   0 0 4 0 0 1 180
>>>
>>> rpict" -vf j:\radiancefiles\27_07_2011_13_10_893074_#0\view.vf  -x 1800
>>> -y 1800 -vh 15.30 -vv 15.30 -st 0.01 -ar 512 -aa 0.10 -ab 5 -lw 0.01000
>>> -lr -10 j:\radiancefiles\27_07_2011_13_10_893074_#0\wholeScene.oct>
>>> j:\radiancefiles\27_07_2011_13_10_893074_#0\wholeScene.rpict
>>>
>>> This is all running on mingw radiance on a windows PC. Anyone have any
>>> suggestions?
>>>
>>> Thanks,
>>>
>>> George
>>>
>>>
>>> --
>>> Department of Psychology, University of St Andrews
>>>
>>>      RM 1.05 (The white room).
>>>      Phone      (01334) 462090
>>>
>>> _______________________________________________
>>> Radiance-general mailing list
>>> Radiance-general at radiance-online.org
>>> http://www.radiance-online.org/mailman/listinfo/radiance-general
>>
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>
>
>-- 
>Department of Psychology, University of St Andrews
>
>     RM 1.05 (The white room).
>     Phone      (01334) 462090
>
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