[Radiance-general] 6 - Photon-Mapping
Lars O. Grobe
grobe at gmx.net
Sat Oct 27 14:59:04 PDT 2012
Hi,
at the moment, you can download only the old 3.7 release, but the pmap has been ported to current releases. Not sure when it will be public available.. Do you need a supported release?
Cheers, Lars.
--
Dipl.-Ing. Architect Lars O. Grobe
On Oct 26, 2012, at 9:18, nassif nassif <nynassif at gmail.com> wrote:
> Hallo Lars,
>
> Thanks a lot for your reply, but unfortunately i was not able to work on it. my administrator (who does the instlalation for us told me that it might not work on Radiance version 4.2a; is it true? if yes which version of radiance i should work with?
>
> thanks a lot again!
>
> - Nassif
>
>
>
>
> On Mon, Oct 8, 2012 at 1:05 PM, <radiance-general-request at radiance-online.org> wrote:
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> Today's Topics:
>
> 1. weather data in radiance (shailan zareiy)
> 2. Monte Carlo sampling setting (Iebele)
> 3. Re: Monte Carlo sampling setting (Greg Ward)
> 4. Re: weather data in radiance (Greg Ward)
> 5. Re: weather data in radiance (Lars O. Grobe)
> 6. photomapping example (nassif nassif)
> 7. Re: photomapping example (Lars O. Grobe)
> 8. Re: weather data in radiance (shailan zareiy)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 7 Oct 2012 23:48:08 +0330
> From: shailan zareiy <sh.zareiy at gmail.com>
> To: radiance-general at radiance-online.org
> Subject: [Radiance-general] weather data in radiance
> Message-ID:
> <CABNGNZJpYU6r+=8OLKkEvrsVPGLxtdxWH7xQbPj7oU5ganX0Jw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> dear all
> hi,i have a question about the weather data in radiance simulation. i want
> to know which items of weather data is used in a daylight simulation by the
> radiance software.
> thanks for your help
> Sincerely
> Shailan Zareiy
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> ------------------------------
>
> Message: 2
> Date: Sun, 7 Oct 2012 23:57:38 +0300
> From: Iebele <iabel at iebele.nl>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: [Radiance-general] Monte Carlo sampling setting
> Message-ID: <DF1DA428-C7A0-40B8-8924-B92B62411DDB at iebele.nl>
> Content-Type: text/plain; charset=windows-1252
>
> Hi Greg,
>
> I need a test with true Monte Carlo sampling (in the contrary as many earlier requests, I need as much variance in different runs of rpiece as possible).
> I assume rpiece takes the same default values as rpict (?)
>
> "rpict -defaults" gives:
>
> -u- # correlated quasi-Monte Carlo sampling
>
> It is not clear to me how to set true Monte Carlo sampling on.
>
> -u+ ?
>
> Cheers,
>
> - iebele
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 7 Oct 2012 14:42:20 -0700
> From: Greg Ward <gregoryjward at gmail.com>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: Re: [Radiance-general] Monte Carlo sampling setting
> Message-ID: <BCF5B7A0-C3AC-413B-BAFB-86B0FDC651A1 at lmi.net>
> Content-Type: text/plain; charset=us-ascii
>
> Yes and yes. You can use the -u+ option in rpiece, along with all the other rpict options. I recommend setting "-ps 1" as well for pure MC.
>
> -Greg
>
> > From: Iebele <iabel at iebele.nl>
> > Date: October 7, 2012 1:57:38 PM PDT
> >
> > Hi Greg,
> >
> > I need a test with true Monte Carlo sampling (in the contrary as many earlier requests, I need as much variance in different runs of rpiece as possible).
> > I assume rpiece takes the same default values as rpict (?)
> >
> > "rpict -defaults" gives:
> >
> > -u- # correlated quasi-Monte Carlo sampling
> >
> > It is not clear to me how to set true Monte Carlo sampling on.
> >
> > -u+ ?
> >
> > Cheers,
> >
> > - iebele
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 7 Oct 2012 14:44:20 -0700
> From: Greg Ward <gregoryjward at gmail.com>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: Re: [Radiance-general] weather data in radiance
> Message-ID: <76D314B2-66B7-442A-A52F-ED940AB8E982 at lmi.net>
> Content-Type: text/plain; charset="us-ascii"
>
> Radiance doesn't take weather data directly. The gensky and gendaylit programs in Radiance can use some information from weather tapes to adjust their sky models, but there aren't any built-in utilities to handle weather tapes.
>
> Daysim does have such utilities, and we are hoping to add some facilities in the next year or so.
>
> -Greg
>
> > From: shailan zareiy <sh.zareiy at gmail.com>
> > Date: October 7, 2012 1:18:08 PM PDT
> >
> > dear all
> > hi,i have a question about the weather data in radiance simulation. i want to know which items of weather data is used in a daylight simulation by the radiance software.
> > thanks for your help
> > Sincerely
> > Shailan Zareiy
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> ------------------------------
>
> Message: 5
> Date: Mon, 08 Oct 2012 11:32:17 +0200
> From: "Lars O. Grobe" <grobe at gmx.net>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: Re: [Radiance-general] weather data in radiance
> Message-ID: <50729DA1.2030803 at gmx.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi,
>
> just one hint - if you need to process weather data, tr (to replace
> separators) and awk (to select and reformat fields of records) will be
> helpful to load the relevant fields into gendaylit. Both are standard
> tools in any Unix-like system, includig Mac OS X and Linux.
>
> Cheers, Lars.
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 8 Oct 2012 12:22:03 +0200
> From: nassif nassif <nynassif at gmail.com>
> To: radiance-general at radiance-online.org
> Subject: [Radiance-general] photomapping example
> Message-ID:
> <CAOQvQd=Xv2i14tda4O6AYNbQ7h5ZUEd5WjkQr_u0mdPVde_OHw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> hallo people,
>
> I am planning to simulate a simple geometry using photomapping.
>
> Is there any simple script of how photo-mapping works? my aim is to check
> the output for different material (glass, prism, trans...) feeded with a
> narrow beam Fixture which results different outputs.
>
> thanks in advance!
>
> --
> *N.Nassif
>
> Lighting Designer***
> *PLDA Member
>
> Neue Str. 55
> 21073, Hamburg
> Deutschland
>
> +49 162 6050060
> nynassif at gmail.com*
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> ------------------------------
>
> Message: 7
> Date: Mon, 08 Oct 2012 12:43:47 +0200
> From: "Lars O. Grobe" <grobe at gmx.net>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: Re: [Radiance-general] photomapping example
> Message-ID: <5072AE63.2030702 at gmx.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi Nassif!
> > I am planning to simulate a simple geometry using photomapping.
> >
> > Is there any simple script of how photo-mapping works? my aim is to
> > check the output for different material (glass, prism, trans...)
> > feeded with a narrow beam Fixture which results different outputs.
> Start with Roland's documentation of the pmap extension for Radiance. It
> explains most. Especially look for the supported / unsupported
> primitives. Than, vary the number of photon in the distribution pass
> (try up to 2,000,000 photons) and the bandwith in the photon gather
> pass. Basically, pmap is not too different from using Radiance, you just
> create the photon maps with mkpmap first and use them instead of the
> ambient calculation in rpcit / rtrace. Don't forget to manually delete
> the photon maps, they are not overwritten by mkpmap (adding a --force /
> -f option for overwriting would be a useful add-on...).
>
> I showed some examples at a presentation two years ago:
> http://www.radiance-online.org/community/workshops/2010-freiburg/PDF/PmapAppsPresentation-20100922.pdf
>
> There are several presentations on the pmap around for the recent
> workshops, all available at radiance-online.org.
>
> Cheers, Lars.
>
>
>
> ------------------------------
>
> Message: 8
> Date: Mon, 8 Oct 2012 14:35:05 +0330
> From: shailan zareiy <sh.zareiy at gmail.com>
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Subject: Re: [Radiance-general] weather data in radiance
> Message-ID:
> <CABNGNZLR2ijk_iLmzJjOHLoWG2=8ipuzfv7HxXuvYiwBWbF+Uw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> so you mean that radiance extracts the sky conditions such as sky clearness
> from the weather data not just altitude and longitude of the city?
>
> On Mon, Oct 8, 2012 at 1:14 AM, Greg Ward <gregoryjward at gmail.com> wrote:
>
> > Radiance doesn't take weather data directly. The gensky and gendaylit
> > programs in Radiance can use some information from weather tapes to adjust
> > their sky models, but there aren't any built-in utilities to handle weather
> > tapes.
> >
> > Daysim does have such utilities, and we are hoping to add some facilities
> > in the next year or so.
> >
> > -Greg
> >
> > *From: *shailan zareiy <sh.zareiy at gmail.com>
> >
> > *Date: *October 7, 2012 1:18:08 PM PDT
> >
> > *
> > *
> >
> > dear all
> > hi,i have a question about the weather data in radiance simulation. i want
> > to know which items of weather data is used in a daylight simulation by the
> > radiance software.
> > thanks for your help
> > Sincerely
> > Shailan Zareiy
> >
> >
> > _______________________________________________
> > Radiance-general mailing list
> > Radiance-general at radiance-online.org
> > http://www.radiance-online.org/mailman/listinfo/radiance-general
> >
> >
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>
>
> --
> N.Nassif
>
> Lighting Designer
> PLDA Member
>
> Neue Str. 55
> 21073, Hamburg
> Deutschland
>
> +49 162 6050060
> nynassif at gmail.com
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general
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