[Radiance-general] luminaire modelling .ies data

[Christian Fusenig]

Hi Andrew,

thanks for your help so far.

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...Looking at your IES file, you say you want a distribution with 12 Vertical
Angles of data and 27 Horizontal angles of data.  Looking at your angles,
you have indeed provided 12 Vertical angles, but you have only provided 22
Horizontal angles, (unless my eyes are deceiving me).  I have checked a few
IES files I have used and converted successfully and these quantities should
match....
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Ok you where right on this one, i worked with so many different files, i picked a wrong one.

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Also I am not sure if you have cut your lumen data up within the e-mail to
save space, but when you write the lumen data should you not have 12 x 27
(or 22) numbers, i.e. 27 (or 22) lines, each with 12 numbers in them.
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Thats the point i am confused about, i measured 12 vertical angles of this luminaire and 22 horizontal.
When i have a symmetric luminaire, i write:
TILT=NONE
1 5000 1 13[vert.] 1[horiz.] 1 1 -0.2[width] 0[Lenght] 0[height] 1 1 55

0 5 10 15 20 25 30 35 40 45 50 55 90 [vert. degrees]
0 [horiz. degrees]
1623 1582 1618 1693 1815 1979 2169 2185 2166 2111 2273 2511 [vert. values]
0 [hor. values]

What do i have to write when i have the same vertical angles but additionally these
horizontal values and a rectangular shape?
degrees: 0  2.5  5  7.5  10  12.5  15  17.5  20  25  30  35  40  45  50  55  60  65  70  75  80  85  (22)
values: (22) i guess ;-)
1623 1628 1634 1641 1658 
1677 1705 1744 1786 1885 
2064 2254 2546 2905 3247 
3864 4579 6024 7642 9496 
8984 30789

Best regards,

Christian




-- 
Christian Fusenig
Diplomand, Medientechnik
Undergraduate, Media Technology
Hamburg University Of Applied Sciences
http://www.mt.haw-hamburg.de

address: Beim Schlump 27/07
              20144 Hamburg

email:    christian_fusenig at gmx.de

mobile:  ++49 179 5975845