[Radiance-general] Re: rtcontrib parameter settings

[Andy Stone]

Hi Greg,

Thanks for the advice - it's sorted out my problem.  The only slight
change that I made to the commands that you suggested was in the total
command I added 216 after the -id option (since I have 72 modifiers * 3
colour channels=216 columns in the file):  

total -m -id216 -16 -od solar_coefficients16.bin >
solar_coefficients.bin

Thanks,

Andy

> A funny trick you can try is using multiple identical calculations
> then averaging the result into your output file.  I recommend doing
> this in two steps, so you can recover the run if you have to.  The
> following would take 16 samples at each illuminance point and average
> them together to reduce noise by a factor of 4:
> 
> sed -n 'p;p;p;p;p;p;p;p;p;p;p;p;p;p;p;p' pluxmeters_test_office.txt \
> 	| rtcontrib -V+ -o solar_coefficients16.bin \
> 	-M sun_modifiers.txt -fad -ab 5 -ad 4096 -lw 1e-8 -I+ -h \
> 	octrees/scene_with_suns.oct
> total -m -id -16 -od solar_coefficients16.bin > solar_coefficients.bin
> rm solar_coefficients16.bin
>