BTW, the default value for -g is not printed in the manpage, but it's 20%
(you can find it in gensky.c, and Axel Jacobs mentions this in his
rtcontrib tutorial, I believe).
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.guglielme...@nrel.gov
On 2/9/11 11:22 AM, "Guglielmetti, Robert" <robert.guglielme...@nrel.gov>
wrote:
>The default rfl value for -g is used when -g is not given. That's the
>definition of default, isn't it? =8-)
>
>Greg is saying that -g needs an argument, for the ground refl. It's not an
>on/off switch.
>
>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.guglielme...@nrel.gov
>
>
>
>
>
>On 2/9/11 11:05 AM, "Randolph M. Fritz" <rfr...@lbl.gov> wrote:
>
>>So is the default never used? Or only when -g is not given?
>>
>>On 2011-02-07 13:49:44 -0800, Gregory J. Ward said:
>>
>>> That's because -g is expecting an argument (the ground reflectance).
>>> If you give "-c" after, it probably calls atof("-c") which returns 0.
>>>
>>> In general, Radiance doesn't have very paranoid argument checking. If
>>> you don't give a legal command line, many Radiance programs just muddle
>>> through (or crash if they try reading past the last argument). The
>>> exceptions to this are the rendering programs and a few utilities that
>>> call badarg() to check command argument types.
>>>
>>> -Greg
>>>
>>>> From: "Randolph M. Fritz" <rfr...@lbl.gov>
>>>> Date: February 7, 2011 1:29:09 PM PST
>>>>
>>>> If -g is given as the last argument to the gensky command, a bus error
>>>> or segmentation fault results. That is:
>>>> gensky 3 31 10:00 -g -c
>>>> works, but
>>>> gensky 3 31 10:00 -c -g
>>>> fails.
>>>> --
>>>> Randolph M. Fritz € rfr...@lbl.gov
>>>> Environmental Energy Technologies Division € Lawrence Berkeley Labs
>>
>>
>>--
>>Randolph M. Fritz € rfr...@lbl.gov
>>Environmental Energy Technologies Division € Lawrence Berkeley Labs
>>
>>
>>
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>
>
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