[Radiance-general] ies2tab

[loscotec at libero.it]

Mmm.. as proved, my ignorance is great, and probably my english is poor too. 

I'm sorry Greg but I didn't understand the following:


"   .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.    "

What are HEADs in radiance-online.org ?
And actually it is not orientation of photometric distribution the thing which is wrong, but just the luminaire shape which is rotated.. (due to ies2tab and not to ies2rad). But I could be wrong...

Lucio



.
.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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