Sky type for daylight factor recipe in ladybug tools 1.3

[zahabia]

Hi, where can I see which sky type is being used for daylight factor calculations?

? I’m using

[LiamRuvio]

The Daylight Factor recipe uses the Overcast Sky.

Greetings

[zahabia]

Where can I see this? Also which overcast sky? I’m asking this because we’re comparing results with another software (VELUX daylight visualiser) and we’re wondering if the huge difference in the results is due to different sky models.

[LiamRuvio]

Is used the CIE Overcast sky, Typ 1.
Here the detailed answer:

CIE Overcast Sky Type 1 or Type 16 for the Daylight Factor recipe into LBT

Here is the command that we use to generate the sky for Daylight factor simulation: It translates to !gensky -ang 45 0 -c -B 558.659218 -g 0.200. Here is the sky definition: !gensky -ang 45 0 -c -B 558.659218 -g 0.200 skyfunc glow sky_glow 0 0 4 1.000 1.000 1.000 0 sky_glow source sky 0 0 4 0 0 1 180 skyfunc glow ground_glow 0 0 4 1.000 1.000 1.000 0 ground_glow source ground 0 0 4 0 0 -1 180