- In the daylight factor recipe I can see that the SKYILLUM is set to 100 000.
“6.3.3 Example: CIE Overcast Sky Defined by Its Horizontal _
The preceding example showed how to generate a brightness distribution based on
the standard CIE overcast sky model. The absolute brightness of the sky, however,
was normalized for the purposes of illustration. Furthermore, the input and output
were in units of radiance or irradiance. Before we can tackle real-world problems,
we need to be able to relate the more usual daylighting quantities of luminance and
illuminance to the radiance and irradiance inputs required by gensky. Recall that
although the _
_ system calculates in units of radiance/irradiance, we will use
a constant value for the factor to convert these to luminance/illuminance, or vice
Daylighting practitioners commonly describe a sky in terms of the diffuse hori-
zontal illuminance that is produced by that sky. Recall that the CIE overcast model
does not include the sun, so here the global horizontal illuminance will be the same
as the diffuse horizontal illuminance. The CIE overcast sky can therefore be fully
characterized by the horizontal illuminance, usually given in lux. **A realistic hori-**
_zontal illuminance for a (brightish) overcast sky is 10,000 lux.”
Is this something taken into consideration further in the code ?
- After running a test case, I see that DF values are rounded with no decimals. Is this intended? Any way I could change this without making a mess in the code?