[Radiance-general] Diffuse illuminance

[Guglielmetti, Robert]

Actually, you need the sun to produce the initial light, to be bounced around for the diffuse. So the basic idea is (props to Andy McNeill) you do a "normal" simulation with a full sun and sky, and then a second one with JUST the sun, and then subtract the latter from the former, to get the diffuse-only. The details are in Sarith's turotial, here: https://www.radiance-online.org/learning/tutorials/matrix-based-methods

- Rob



On 1/26/18, 10:32 AM, "TSANG Kai Kwong" <kaiktsang4-c at my.cityu.edu.hk> wrote:

    Dear all,
    
    If I want to calculate the diffuse illuminance resulted in at a point inside a room, do I just need to remove the "void light solar" and "solar source sun" from the sky.rad and run the simulation?
    
    Best regards,
    Dennis