I refer to an email that Chas sent regarding the re-usage of ambient files (13th March). I did a rendering and saved the ambient file (which amounted to about...
329
pardott@...
Apr 2, 2001 1:35 pm
I'm still using Radiance in Adeline and I would like to calculate the DF only in a particular point (no luminaries, only daylight): can you help me?...
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David Baldacchino
daveb@...
Apr 5, 2001 7:22 pm
Regarding the use of a previously used ambient file, I figured that you have to uncheck the "save ambient data" checkbox after you type the name of the file so...
331
Andrew.Bissell@...
Apr 7, 2001 3:58 pm
I am trying to map a picture on to a polygon. I have created two .rad files which contain the 'titanium_white' material description and the 'image'...
332
njlander@...
Apr 9, 2001 12:42 am
Andrew, ... ... where (xshift) etc represents the numerical dimensions. Note the change in the number of arguments from 11 to 15. Hope that helps. Nick L...
333
njlander@...
Apr 9, 2001 12:58 am
I'm modelling a netball centre and have two queries on meterials: 1. The inside of this place is (insulating) foil. Does anyone know a really good way to...
334
njlander@...
Apr 9, 2001 6:21 am
Further to my last message, I have since spent the last few hours getting to grips with this trans stuff. Could someone who actually understands trans please...
335
pardott@...
Apr 9, 2001 8:30 am
I have already send a message for this question!! Can you help me? I need to evaluate the DF in a particular point in my simulation with Radiance (version for...
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Georg Mischler
schorsch@...
Apr 9, 2001 12:11 pm
... Since you're working with Adeline, and even mention a program that is specific to Adeline (never heard of rillum before), you might have more success in...
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Georg Mischler
schorsch@...
Apr 9, 2001 12:36 pm
... The diagram on the following page (from the Rayfront user manual, but this part applies to all Radiance based applications) may make the process a little...
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Georg Mischler
schorsch@...
Apr 9, 2001 11:12 pm
... Might be a good idea to actually include the address: ;-) http://www.schorsch.com/rayfront/manual/transdef.html ... -- Georg Mischler -- simulations...
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njlander@...
Apr 10, 2001 4:35 am
Thanks Georg. With the help of the flowchart you refer to (and the book), I've come up with the following trans material. Could you, or anyone else reading,...
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David Baldacchino
daveb@...
Apr 10, 2001 6:31 am
I placed a reference point on the outside of a building in order to get the illuminance so as to use it for daylight factor calculations. For some reason, it...
341
Andrew.Bissell@...
Apr 10, 2001 7:54 am
David With regards 'no light source' I can't help other than to mention the post 'no. 223 by Judy Lai' which explains some reasons which may lead to 'aiming...
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Sandra Correa
scorrea@...
Apr 10, 2001 10:59 am
David: I also wanted to mention how I work the DF, which has proven quite effective. I place the grid in the room and measure illuminance from it, then I place...
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Georg Mischler
schorsch@...
Apr 10, 2001 11:46 am
... I'm not sure if I can follow your logic here. If you really derive 48% heat absorption from 52% total heat transmission, then you are mixing energy from...
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zrogers@...
Apr 10, 2001 8:58 pm
Nick, I've used the trans material several times to do frosted glass and meccoshades. My understanding is that total reflectance + total absorption + total...
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Georg Mischler
schorsch@...
Apr 10, 2001 9:51 pm
... In "real world" terms, that sum must be _exactly_ 1 (ignoring the luminescent and/or fluorescent effects present in some materials). Unfortunately, the...
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njlander@...
Apr 11, 2001 6:02 am
Thanks again, Georg. I think its finally getting through my thick skull. What I'm down to is this: 1. I know total light transmittance (41%). (Is one meant to...
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Joel Callow
joelcallow1@...
Apr 11, 2001 9:49 am
I am wanting to simulate a room lit by fibre optics. The closest approximation to this would seem to be low wattage [60-300W] halogen fixtures. Can I...
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Georg Mischler
schorsch@...
Apr 11, 2001 5:44 pm
... This is exactly what I get, after a little number juggling. If you cared about colored light, you might need some minor tweaks for the color weighting, but...
349
kevinwhouser@...
Apr 11, 2001 6:10 pm
In running a simulation (rpict via batch file), we modified -ab value from 0 to 1. With -ab 0 the rendering took 4 hours. With -ab 1 we cancelled the...
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David Baldacchino
daveb@...
Apr 11, 2001 7:20 pm
Kevin, I don't know what computing power you have, but I have rendered a model on a 950Mhz Athlon and it took over 7 days! (see below) The -ab was 1 (-ab is...
351
Jennifer Youngberg
jennifer@...
Apr 11, 2001 8:06 pm
I would like to model specific diffuse glazings in Desktop Radiance. The Materials Editor help page in DeskRad says"Currently only reflective materials can be...
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Georg Mischler
schorsch@...
Apr 11, 2001 8:38 pm
... Hi Jennifer, I'm much more familiar with Radiance itself than with DR, so that I can't really tell you much about the exact possibilities there. From what...
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njlander@...
Apr 11, 2001 11:08 pm
Jennifer, if you want to get Radiance working in Linux, you need a couple of patches. I've copied some information below from when I had the same problem. Or,...
354
njlander@...
Apr 11, 2001 11:26 pm
Thanks Georg. Now I can finally get my project back on track. Only a couple of days late ;-) ... I think the confusion here was simply one of semantics. I get...
355
bcarne@...
Apr 12, 2001 3:13 am
I have a question for you. I am backlighting a section of wall, but I want to use the glow primitive instead. There will be 4" between the lamp and the surface...
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David Baldacchino
daveb@...
Apr 12, 2001 3:13 pm
I have simulated a reference grid and re-saved the current drawing (I'm calling it "orig" for clarity)under the new name "ref". DR did not ask me for a new...
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Charles Ehrlich
ckehrlich@...
Apr 13, 2001 10:51 am
Hi Kevin, My suggestion for reducing image rendering time is to reduce the number of light sources in your scene. If you have many, many glazings, each one is...
