I can't really tell what's going on because I can't reproduce your strange image with the ghost luminaire. The ghost doesn't even match the appearance of the luminaires you've defined, so it makes no sense to me.
You should retry with the latest HEAD version to see if it's still happening for you. If it is, then we have an issue I can investigate further. Cheers, -Greg > From: Pally Sandher <pally.sand...@iesve.com> > Date: February 13, 2013 7:40:44 AM PST > > Greg I'd completely forgotten about this issue & was reminded by a colleague > recently as he was seeing this issue intermittently. > He's provided me an archive which I've uploaded to > http://upload.iesve.com/downloads/radiance_issues/ghost_luminaire2.zip > It should contain - Monday.rad, Monday_mod.rad Luminaire Files - > DULCET1203WW.* Parameter file - Monday.rdp (with -dt = 0.025 and -dc = 0.95) > View file - Monday.rdv Octree file - image5.oct Pic file - image5.pic (with > ghost luminaire) > > We're running on Windows 7 x64. The radiance code I used to build from source > is a few months old (mid-September IIRC) as I haven't had time to re-download > & re-run Cmake etc. if there's been any updates since then. > > Thanks, > > Palbinder Sandher > Software Platform Engineer > T: +44 (0) 141 945 8500 > F: +44 (0) 141 945 8501 > http://www.iesve.com > > **Design, Simulate + Innovate with the <Virtual Environment>** > Integrated Environmental Solutions Limited. Registered in Scotland No. > SC151456 > Registered Office - Helix Building, West Of Scotland Science Park, Glasgow > G20 0SP > Email Disclaimer > > > -----Original Message----- > From: Gregory J. Ward [mailto:gregoryjw...@gmail.com] > Sent: 01 November 2012 16:33 > To: code development > Subject: Re: [Radiance-dev] The curious case of the Ghost Luminaire > > Hi Pally, > > I don't know who or what is setting your rendering parameters, but they are > not something I would recommend. The "rad" program is a good way to get sane > rendering options if you don't like the defaults. Setting -dt .25 -dc .35 is > causing the strange contours around your light sources as well as numerous > other inaccuracies. You are telling Radiance that you are fine with 25% > error in the direct calculation, meaning everything else is worse. > > The ghosts you are seeing are due most likely to a glazing surface that > extends over your wall surface(s). I can't tell you for sure because the zip > file you uploaded doesn't contain a complete model -- there are many > referenced files that are missing. > > What system are you using to assemble all this? > > -Greg > >> From: Pally Sandher <pally.sand...@iesve.com> >> Date: November 1, 2012 9:15:20 AM PDT >> >> Hi, >> We've noticed some strange "ghost" luminaires in Radiance 4.2 (nothing to do >> with Halloween yesterday). >> I've uploaded a file with a sample .pic file and the files used to generate >> it at http://upload.iesve.com/downloads/radiance_issues/ghost_luminaire.zip >> >> As you can see from the .pic file there's a "ghost" luminaire to the centre >> left of the image which appears to be generated by the luminaire visible in >> the centre of the image (turning off the others while leaving it on still >> shows the ghost while vice-versa doesn't). Rotating the view to the right >> also removes the "ghost". >> The commands we're running to generate the image are as follows: >> >> oconv -f Monday.map Monday.rad > ghost_lum.oct >> rpict -w -t 2 -vtv -vp 6.300 8.100 1.800 -vd -2.800 -3.600 0.000 -vu 0 0 1 >> -vh 80.000 -vv 60.000 -x 1600 -y 1600 -x 64 -y 64 -ps 6 -pt 0.100 -pj 1.0 >> -dj 0.350 -ds 0.300 -dt 0.250 -dc 0.350 -dr 2 -dp 128 -st 0.500 -ab 2 -aa >> 0.150 -ar 64 -ad 128 -as 64 -lr 6 -lw 0.005 -av 0.000 0.000 0.000 -af >> temp.amb ghost_lum.oct >amb.raw >> rpict -w -t 2 -vtv -vp 6.300 8.100 1.800 -vd -2.800 -3.600 0.000 -vu 0 0 1 >> -vh 80.000 -vv 60.000 -x 1600 -y 1600 -ps 6 -pt 0.100 -pj 1.0 -dj 0.350 -ds >> 0.300 -dt 0.250 -dc 0.350 -dr 2 -dp 128 -st 0.500 -ab 2 -aa 0.150 -ar 64 -ad >> 128 -as 64 -lr 6 -lw 0.005 -av 0.000 0.000 0.000 -af temp.amb ghost_lum.oct >> >ghost_lum.raw >> pfilt -m 0.25 -x /2 -y /2 ghost_lum.raw >ghost_lum.pic >> >> If anyone has a few minutes to run this image on their systems & let me know >> if the "ghost" luminaire also appears for you it would be most appreciated >> (I'm using Radiance HEAD built from source on Windows 7 SP1). >> >> Thanks, >> >> Palbinder Sandher >> Software Platform Engineer >> T: +44 (0) 141 945 8500 >> F: +44 (0) 141 945 8501 >> http://www.iesve.com > > _______________________________________________ > Radiance-dev mailing list > Radiance-dev@radiance-online.org > http://www.radiance-online.org/mailman/listinfo/radiance-dev > > > > _______________________________________________ > Radiance-dev mailing list > Radiance-dev@radiance-online.org > http://www.radiance-online.org/mailman/listinfo/radiance-dev _______________________________________________ Radiance-dev mailing list Radiance-dev@radiance-online.org http://www.radiance-online.org/mailman/listinfo/radiance-dev
