[Radiance-general] slightly higher irradiance values for -b 1 option

[Christopher Rush]

Ali,
If you run the same commands multiple times, do you always get similar results? Does -b 1 always give proportionally 2% higher value than the higher orders of magnitude if you repeat the process multiple times, or does it vary?

If you change the –ad or –lw parameters do you get any different degree of consistency?

-Chris

From: Ali Fatoorechi [mailto:ali at surveymbs.com]
Sent: Friday, April 21, 2017 7:57 AM
To: Radiance general discussion
Subject: [Radiance-general] slightly higher irradiance values for -b 1 option

Hello guys,

I am a bit struggling to make sense of numbers I get. I might have done something wrong.
The rtrace gives roughly same irradiance figures(apart from the exponent component) for overcast sky generated with -b 10, -b 100, -b 1000,
or any other power of 10, while -b 1 gives slightly higher value.

rtrace -w -h -I -ab 12 -ad 10000 0 -as 4096 -aa 0 -ar 0 -lw 1E-05 room.oct < pnt.txt

!gensky 3 21 10 -c -a 51 -o 0 -m 0 -b 1

-b 1:       9.245390e-002   9.245390e-002   9.245390e-002
-b 10:     9.045287e-001   9.045287e-001   9.045287e-001
-b 100:   9.023538e+000   9.023538e+000   9.023538e+000
-b 1000: 9.039278e+001   9.039278e+001   9.039278e+001

This is a simple room with an opening and no glazing.

Thanks,
Ali
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