[Radiance-general] partly covered source

[Jan Wienold]

Hi Giulio, hi all,

unfortunately it doesn't work out safely. In total I have many, many 
cases to look at (in total 40000 timesteps x 33 points x 2geometries) 
and there are still many cases, when rtrace doesn't catch the sun.
Since these are calculations for an expertise, which is used for a 
trial, I have to be absolutely sure not to miss any case...

Is there any idea except calculating images ? Source subdivisions are 
unfortunately not possible when "source" is used...

Thanks!

Jan



On 07/24/2012 02:13 AM, Jan Wienold wrote:
> hi giulio,
>
> Yes!
> The use of -dj helped, but only if I use also the -u option. Otherwise 
> I still get randomized zero values, also if I change -ds.
>
> thanks!
>
> jan
>
>
>
>
> On 07/24/2012 01:35 AM, giulio antonutto wrote:
>> Jan,
>> maybe you can fix it with -dj and oversampling?
>> G
>>
>> On 24 Jul 2012, at 00:03, Jan Wienold wrote:
>>
>>> Hi all,
>>>
>>> I just encountered a strange different behavior between rtrace and 
>>> rpict:
>>> If the sun ( using "source") is  covered in large parts (in that 
>>> case more than half) I can still "see" the uncovered parts in the 
>>> image (=>this is what I expect). In case I calculate at the same 
>>> point and in the same direction the illuminance with rtrace -I, I 
>>> get zero contribution.  Is just the center of the source description 
>>> tested in that case? Any solution for this for rtrace?
>>> I just look for the sun, no sky description and use only direct 
>>> calculation (-ab 0) .
>>>
>>> Thanks,
>>>
>>> Jan
>>>
>>>
>>>
>>> -- 
>>> Dr.-Ing. Jan Wienold
>>> Head of Team Passive Systems and Daylighting
>>> Fraunhofer-Institut für Solare Energiesysteme
>>> Thermal Systems and Buildings
>>> Heidenhofstr. 2, 79110 Freiburg, Germany
>>> Phone: +49(0)761 4588 5133 Fax:+49(0)761 4588 9133
>>> jan.wienold at ise.fraunhofer.de
>>> http://www.ise.fraunhofer.de
>>>
>>> In office:
>>> Mo,Tue: 8:30-18:00
>>> We,Thu: 8:30-16:00
>>> Fr:  8:30-15:30
>>>
>>>
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>>
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>


-- 
Dr.-Ing. Jan Wienold
Head of Team Passive Systems and Daylighting
Fraunhofer-Institut für Solare Energiesysteme
Thermal Systems and Buildings
Heidenhofstr. 2, 79110 Freiburg, Germany
Phone: +49(0)761 4588 5133 Fax:+49(0)761 4588 9133
jan.wienold at ise.fraunhofer.de
http://www.ise.fraunhofer.de

In office:
Mo,Tue: 8:30-18:00
We,Thu: 8:30-16:00
Fr:  8:30-15:30