[esp-r] Re: dailight factors+cfd

Thu Feb 16 15:44:39 GMT 2012

The .opt file is missing, of course (attached is an example file). Try copying this into your directory and give it the name given in your .rif.

The .df is the file with "all zeros"? What is the contents of the .grd? Actually, I have never done a "graphical" daylight analysis. Usually I use radiance in "casual gain control coupling" mode, so I am not sure if I can help any further.

Achim

---------------------------------------------------------------------
T +41 61 467 44 51

achim.geissler at fhnw.ch
www.fhnw.ch/iebau
---------------------------------------------------------------------

> -----Ursprüngliche Nachricht-----
> Von: A.Sdei at brighton.ac.uk [mailto:A.Sdei at brighton.ac.uk]
> Gesendet: Donnerstag, 16. Februar 2012 16:34
> An: Geissler Achim; Lars O. Grobe; esp-r at lists.strath.ac.uk
> Betreff: RE: [esp-r] Re: dailight factors+cfd
> 
> Yes, I am starting from the cfg folder and the radpath is .../rad. The files are:
> 
> Prova1e.rcf
> Prova1e_day_fa.df
> Prova1e_day_fa.grd
> Prova1e_day_fa
> Prova1e_day_fa.rif
> Prova1e_day_fa.sky
> Prova1e_day_fa-glz.rad
> Prova1e_day_fa-in.rad
> Prova1e_day_fa-out.rad
> Prova1e_day_fa-out.rad-
> 
> What do you think? Is there something missing? Let me know,
> 
> Arianna
> 
> 
> -----Original Message-----
> From: Geissler Achim [mailto:achim.geissler at fhnw.ch]
> Sent: 16 February 2012 15:20
> To: Sdei Arianna; Lars O. Grobe; esp-r at lists.strath.ac.uk
> Subject: AW: [esp-r] Re: dailight factors+cfd
> 
> Hi Arianna
> 
> you are starting up ESP-r from the /cfg/ folder of your project, correct? In the
> .cfg, the "radpath" is given as "../rad"? Which files *do* exist in your ../rad
> directory after doing a visualization?
> 
> Achim
> 
> 
> > -----Ursprüngliche Nachricht-----
> > Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-
> > bounces at lists.strath.ac.uk] Im Auftrag von A.Sdei at brighton.ac.uk
> > Gesendet: Donnerstag, 16. Februar 2012 16:08
> > An: Lars O. Grobe; esp-r at lists.strath.ac.uk
> > Betreff: [esp-r] Re: dailight factors+cfd
> >
> > Hi,
> >
> > this is what I have got in my .bashrc file:
> >
> > PATH=/usr/local/bin:/usr/esru/esp-r/bin:${PATH}
> > RAYPATH=.:/usr/local/lib/ray
> >
> > the RAYPATH seems all right, I have changed and shortened the file
> > name but it doesn't seem to make a big difference. There are no .opt
> > nor .oct files into my rad folder. I will try to look for examples.
> > Let me know if you have any other idea,
> >
> > thank you,
> >
> > Arianna
> >
> > -----Original Message-----
> > From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-
> > bounces at lists.strath.ac.uk] On Behalf Of Lars O. Grobe
> > Sent: 16 February 2012 14:48
> > To: esp-r at lists.strath.ac.uk
> > Subject: [esp-r] Re: dailight factors+cfd
> >
> > Hi!
> >
> > This is probably not related to file name length. Radiance has its
> > origins in Unix environments, so it did not inherit those DOS
> > conventions. However, there is a DEFINE in the sources limiting the
> > length of strings in general. It should be 128 characters in current
> > releases. So you should be far from reaching that limit.
> >
> > Are you sure that the RAYPATH environment variable is set correctly on
> > your system, and that it includes "." (the current directory)?
> >
> > Cheers, Lars.
> >
> > > maybe check the possible length of file names. I could imagine that
> > > your name is too long (I don't really remember if all the radiance
> > > code uses the "default" file name length). That could be your
> > > problem (your name length including extension is 32 characters).
> > >
> > > Further ideas:
> > > The .opt-file should be generated automatically. Check the /rad/
> > > directory for any empty or differently named .opt.
> > >
> > > Try generating the missing .opt manually (use any example file
> > > present in the exemplars).
> > >
> > > Achim
> > >
> > > *Von:*esp-r-bounces at lists.strath.ac.uk
> > > [mailto:esp-r-bounces at lists.strath.ac.uk] *Im Auftrag von
> > > *A.Sdei at brighton.ac.uk
> > > *Gesendet:* Donnerstag, 16. Februar 2012 13:22
> > > *An:* Gian Luca Brunetti; esp-r at lists.strath.ac.uk
> > > *Betreff:* [esp-r] Re: dailight factors+cfd Thank you Gian Luca,
> > >
> > > I got into it, however it doesn't seem to work very well. When I
> > > generate daylight factors all the points have zeros as results and I
> > > read on esp-r radiance desktop (bottom left window):
> > >
> > > File doesn't exist
> > >
> > > rad/type2_phd_b6_trees_20_day_fa.opt
> > >
> > > and on xterm I get:
> > >
> > > rad error generating octree
> > >
> > > type2_phd_b6_trees_20_day_fa.oct removed
> > >
> > > rtrace: system - cannot expand '@type2_phd_b6_trees_20_day_fa_opt :
> > no
> > > such file or directory
> > >
> > > do you or anyone else know what this means and what the problems are
> > > and how to resolve them and get results for daylight factors with
> > > ESP-r? Any suggestion is greatly appreciated, thank you.
> > >
> > > Best,
> > >
> > > Arianna
> > >
> > > *From:*esp-r-bounces at lists.strath.ac.uk
> > > [mailto:esp-r-bounces at lists.strath.ac.uk] *On Behalf Of *Gian Luca
> > > Brunetti
> > > *Sent:* 16 February 2012 11:24
> > > *To:* esp-r at lists.strath.ac.uk
> > > *Subject:* [esp-r] Re: dailight factors+cfd
> > >
> > > Dear Arianna,
> > > to get daylight factors with Radiance from ESP-r, choose
> > > browse/simulate
> > > -> simulation -> visual impact -> daylight factors.
> > >
> > > After that, I think that if you want to get daylight factors plotted
> > > as numbers, the menus are self-explaining.
> > >
> > > I don't know how to plot daylight factors as countour lines from ESP-r.
> > > But I did not look for a way to do it yet.
> > >
> > > Best regards
> > >
> > > Gian Luca
> > >
> > > Gian Luca Brunetti
> > > Politecnico di Milano
> > > Dipartimento BEST
> > > via Bonardi 11
> > > 20133 Milano
> > > tel./fax 02 2399 5750
> > >
> > > Il 15/02/2012 19.58, A.Sdei at brighton.ac.uk
> > > <mailto:A.Sdei at brighton.ac.uk> ha scritto:
> > >
> > > Dear All, I can now use radiance desktop via ESP-r and create and
> > > view images. I need to find daylight factors, does anyone know how?
> > > I would also need to do some ventilation study and I was thinking of
> > > using the cfd facility within esp-r.  I would need to do some tests
> > > with and without trees, is there a parameter such as porosity within
> > > esp-r which I can use to better define the trees that at the moment
> > > are just blocks of solid obstruction? Let me know,
> > >
> > > kind regards
> > >
> > > Arianna
> > >
> > > *Arianna Sdei*
> > > *Architect, MPhil (Cantab)*
> > > *University of Brighton *
> > > *Research Fellow, IFORE Project*
> > > *PhD Fellow*
> >
> > _______________________________________________
> > esp-r mailing list
> > esp-r at lists.strath.ac.uk
> > http://lists.strath.ac.uk/mailman/listinfo/esp-r
> >
> >
> __________________________________________________________
> > _
> > This email has been scanned by MessageLabs' Email Security System on
> > behalf of the University of Brighton.
> > For more information see http://www.brighton.ac.uk/is/spam/
> >
> __________________________________________________________
> > _
> >
> >
> __________________________________________________________
> > _
> > This email has been scanned by MessageLabs' Email Security System on
> > behalf of the University of Brighton.
> > For more information see http://www.brighton.ac.uk/is/spam/
> >
> __________________________________________________________
> > _
> >
> > _______________________________________________
> > esp-r mailing list
> > esp-r at lists.strath.ac.uk
> > http://lists.strath.ac.uk/mailman/listinfo/esp-r
> 
> __________________________________________________________
> _
> This email has been scanned by MessageLabs' Email Security System on
> behalf of the University of Brighton.
> For more information see http://www.brighton.ac.uk/is/spam/
> __________________________________________________________
> _
> 
> __________________________________________________________
> _
> This email has been scanned by MessageLabs' Email Security System on
> behalf of the University of Brighton.
> For more information see http://www.brighton.ac.uk/is/spam/
> __________________________________________________________
> _
-------------- next part --------------
A non-text attachment was scrubbed...
Name: reference_Coupli.opt
Type: application/octet-stream
Size: 153 bytes
Desc: reference_Coupli.opt
Url : http://lists.strath.ac.uk/archives/esp-r/attachments/20120216/7095e4e2/attachment-0001.obj 