Closed
Description
In the documentation of the pvlib.forecast.NDFD.cloud_cover_to_transmittance_linear function, it seems the documented return is the wrong one: It shows the GHI as the return instead of the transmittance.
Here is the function in pvlib.forecast that seems to confirm the case.
"""
Convert cloud cover to atmospheric transmittance using a linear
model.
0% cloud cover returns offset.
100% cloud cover returns 0.
Parameters
----------
cloud_cover : numeric
Cloud cover in %.
offset : numeric, default 0.75
Determines the maximum transmittance.
kwargs
Not used.
Returns
-------
ghi : numeric
Estimated GHI.
"""
transmittance = ((100.0 - cloud_cover) / 100.0) * offset
return transmittance`