[Radiance-general] IES File Manipulation

Mark de la Fuente MdelaFuente at wmtao.com
Fri Jun 25 23:36:13 CEST 2004


Will this work with feet?  My IES file looks like this...  Note that the
IES file was converted in feet with a .81 light loss factor, then the
lboxcorr dimensions are in meters, and then my genbox is in feet again. 
(Note the insertion point is the top of the fixture at 0,0,0).
 
The fixture looks right.. the distribution is no longer shadowing
itself, so it looks right....
 
Sound good?  
 
# ies2rad -i .56419 -df -m .81
# Dimensions in feet
#<IESNA:LM-63-1995
#<[TEST] 5547
#<[MANUFAC] PEERLESS LIGHTING
#<[LUMCAT] 10CRM8-2-32-30/70
#<[LUMINAIRE] 10 1/2"W X 3 1/8"H PEERLITE DIRECT/INDIRECT LIGHT WITH
#<WHITE PAINTED REFLECTOR AND PERFORATED BAFFLES
#<[LAMP] 2-F32/SP35 RATED @ 2850 LUMENS
#<[BALLAST] REL-2P32-SC
# CIE(x,y) = (0.333300,0.333300)
# Depreciation = 100.0%
# 57.4 watt luminaire, lamp*ballast factor = 1
 
void brightdata peerless_dist
5 lboxcorr ./scene/peerless.dat source.cal src_phi4 src_theta 
0
4 1 1.2193 .2713 .0799
 
peerless_dist illum peerless_light
0
0
3 1 1 1
 
!genbox peerless_light peerless.s 4 .89 .262 | xform -t -2 -.445 -.262
 
 
 
> Hiya Mark,
>
> Do you have the Rendering with Radiance book?  there's a detailed 
> example of using lboxcorr to create a rectangular shaped illum
container 
> for your IES distro.  I think that's what you need. (?)

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