[Radiance-general] daylight factor and rtrace cmd

[Christopher Rush]

I believe the -I option to rtrace automatically takes the trace point
one unit in front of the point to avoid conflict with a surface (in case
your point is defined co-planar with a wall, floor, etc.). This would
probably be fine if you model was set up in inches or mm. Maybe you can
scale your model to millimeters using xform -s?
 
A question to the list, would the -i (lowercase) be appropriate to get
the value for the exact point as defined?
 
-Chris

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the command used is:
rtrace -ab 7 -ad 2048 -oodv -I
rcp.oct<numeric/plan_de_travail.fld>numeric/090715_BU_Rennes_07_vitrage_
irradiance.irr
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