If you can define the tregenza angle basis using the Window xml format (which I think you can) then you can import your BSDF into Window without modifications. When you combine it with other glazing layers, window will use your defined basis and export a BSDF with data for the "custom" angle basis (but it annoyingly gives the same Klems definition in the angle basis definition tags).
However I don't think energy plus can use anything other than the klems basis so you're still stuck. Andy On Mon, Feb 24, 2014 at 8:27 AM, Germán <[email protected]> wrote: > There is some file in the source code that allows defining new basis... > But, do you think it is advisable to build a Klems BTDF matrix from a > Tregenza BTDF? A lot of information was probably lost in the "angle > averaging"... Right? > > El 24-02-2014, a las 12:53, David Geisler-Moroder <[email protected]> > escribió: > > Hi Chantal, > > I'm not completely sure about that, but if I remember right, you can use > the bsdf2klems routine for your problem. Therefore you need to properly > specify you angle basis (i.e. the Tregenza resolution) in you input > XML-file. If I do not completely mix up things, the BSDF routines in > Radiance are able to load any user-defined angle basis (as long as it is > well-defined). Maybe Greg can confirm my assumption... > > Cheers, > David > > > 2014-02-24 13:32 GMT+01:00 minchaca <[email protected]>: > >> @German >> Thanks a lot again, I'm gonna check that paper ...and don't worry , no >> 'spanglish-spelling-disaster' detected ... everything was clear! :) >> >> >> @Lars, do you mean David Geisler-Moroder? >> The data is from the gonio-photometer that we have in the lab, is based >> on Tregenza's subdivision of the sky.. it seems >> that the 'quiz/utopy' would be to translate tregenza to klems basis. >> Anyway...I'll try to find the presentation that you are mentioning.. :) >> >> >> Thanks to both, so kind of you! :)) >> >> Chantal. >> >> >> 2014-02-24 2:25 GMT+01:00 Germán Molina Larrain <[email protected]>: >> >> Chantal, >>> >>> I understand WINDOW does not support Tregenza basis. However, I guess >>> that if you have the "raw data" obtained from the photogoniometer, you >>> could mannage to use Radiance's bsdf2klems program (probably not available >>> in the NREL's binaries). >>> >>> Another option might be to perform the Klems matrix calculation in >>> Matlab or something like that, and write the BSDF IDF file yourself. The >>> procedure, I understand, is Very explained in detailed in two papers named >>> "A new method for calculating solar heat gains" by J. Klems. >>> >>> None of these options is straightforward... They might end up being >>> quite hard, actually. >>> >>> Good Luck! >>> >>> Germán >>> >>> Ps: I am answering from my phone, which is in spanish, so the >>> "autocorrect" might have caused some gramatical and spelling disasters... >>> Sorry for that >>> >>> >>> 2014-02-23 20:38 GMT-03:00 Lars O. Grobe <[email protected]>: >>> >>> Hi. >>>> >>>> >> May I ask you one more thing (even if I kind of 'feel' what is gonna >>>> be the answer) : >>>> >> what about if the xml file was generated by a photogoniometer, based >>>> in Tregenza's subdivision of the sky? >>>> >> >>>> >> Do you know if there is a way to import such file in Window? >>>> >>>> David presented examples step by step where he imported data into >>>> Window6. Check recent workshop presentations please. However you would need >>>> 145x145 BSDF values according to the Klems subdivisions for following the >>>> method. Is your data measured or from genBSDF? >>>> >>>> Cheers, >>>> Lars. >>>> _______________________________________________ >>>> Radiance-openstudio mailing list >>>> [email protected] >>>> http://www.radiance-online.org/mailman/listinfo/radiance-openstudio >>>> >>> >>> >>> _______________________________________________ >>> Radiance-openstudio mailing list >>> [email protected] >>> http://www.radiance-online.org/mailman/listinfo/radiance-openstudio >>> >>> >> >> _______________________________________________ >> Radiance-openstudio mailing list >> [email protected] >> http://www.radiance-online.org/mailman/listinfo/radiance-openstudio >> >> > > > -- > Dipl.-Ing. Dr. David Geisler-Moroder > Hofwaldweg 14/20 > 6020 Innsbruck > Austria > > _______________________________________________ > Radiance-openstudio mailing list > [email protected] > http://www.radiance-online.org/mailman/listinfo/radiance-openstudio > > > _______________________________________________ > Radiance-openstudio mailing list > [email protected] > http://www.radiance-online.org/mailman/listinfo/radiance-openstudio > >
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