[Radiance-general] HEAD

[loscotec at libero.it]

Thank you very much Greg for explanation about HEAD. 

Luckily I'm linux user, but unluckily for head to be installed, if I read right, compiling is required. 

Compiling gives me much problems .. I tried to solve them (it seemed it was gcc problems) but the only result was that my system became very unstable and finally didn't even boot, so I had to reinstall the system and feel satisfied of binaries.. !

Lucio


.Hi Lucio,
.
.The lamp color data also includes depreciation factors, which  
.probably account for the 10% difference.  I assume the "white" value  
.is larger.
.
.A long-standing bug has been recently pointed out by Zack Rogers  
.related to the orientation of full photometric distributions, and has  
.been included in the latest HEAD available from radiance-online.org.   
.A statement has also been added to clarify the assignment of the  
.width (along y) and length (along x) axes.
.
.Hope this helps.
.-Greg
.
.> From: "loscotec\@libero\.it" <loscotec at libero.it>
.> Date: February 6, 2008 6:28:49 AM PST
.>
.> Hi everybody !
.>
.> I've got a problem I'm not sure how to deal with.
.>
.> I'm using a Disano light to simulate a tunnel lighting. It is a  
.> fluorescent light.
.>
.> I converted it to radiance format from ies format (previously  
.> translated from eulumdat format) using ies2rad with no specific  
.> value. Then I calculated illuminance on road surface visualizing  
.> isolux scheme.
.>
.> Then I converted the same light with the "-t white" option. And  
.> calculated illuminance's isolux as before.
.>
.> The two isolux schemes are different, being value for the white  
.> case almost 10 % bigger.
.>
.> Shouldn't them be equal?
.>
.> I tried simulating same case in dialux and calculux, and they do  
.> report  almost same values as the white case.
.>
.> What's wrong? Am I missing some knowledge / trick / anything?
.>
.> Lucio
.>
.> Ps : I also discovered some problems both in ies2tab and in  
.> eulumcnv. The second, badly converting photometry (some dark  
.> circles appear in the lighted scene as missing photometric values),  
.> the first badly converting geometry (flipping x and y definitions).  
.> But I have to check this things a little more.
.
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.. Caminante no hay camino, solo se hace camino al andar ..