Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Radiance uses a stochastic process to determine the light transport in a space, not a deterministoc one; you will almost always get some variance in your results. The more rigorous the calculation (i.e. "higher" simulation parameters, spawning more rays), the smaller the degree of variation. Your results above seem pretty stable to me; instead of plotting the variation in terms of lux, look at it as a percentage. You're generally at less than one percent -- actually pretty good.
| | 2 | No.2 Revision |
Radiance uses a stochastic process to determine the light transport in a space, not a deterministoc deterministic one; you will almost always get some variance in your results. The more rigorous the calculation (i.e. "higher" simulation parameters, spawning more rays), the smaller the degree of variation. Your results above seem pretty stable to me; instead of plotting the variation in terms of lux, look at it as a percentage. You're generally at less than one percent -- actually pretty good. good.
