Dear Radiance experts,
We're using rtrace to calculate daylight factor. The scene file, sensor
file, rtrace command parameters are all the same.
However, the result seems to be different when run the same rtrace command
in Unix and Windows, although the difference is not that much (0.11 to 0.13
in terms of daylight factor).
I've already used a "-u-" option for rtrace.
The Radiance in Unix is version 3.9 (installed via Ubuntu software centre)
The Radiance in Windows is version 3.7 (downloaded from
http://www.arch.mcgill.ca/prof/reinhart/software/)
May I ask whether it's the Radiance version difference that caused the
different results?
Thanks!
Ji
Hi Ji,
it should be the same, but of course development continued after 3.7 and maybe some fixed bug or other change in the code led to different results. My first guess however would be a change in the default parameters. That would mean that you may be running rtrace with different settings without even knowing it. Please do a quick check by running "rtrace -defaults" on both platforms and check for differences in the output.
Cheers, Lars.
ยทยทยท
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Dipl.-Ing. Architect Lars O. Grobe
However, the result seems to be different when run the same rtrace command in Unix and Windows, although the difference is not that much (0.11 to 0.13 in terms of daylight factor).