Prepare the solar position, irradiance, and weather inputs to the model, starting with GHI, DNI and DHI.
weather (DataFrame, or tuple or list of DataFrame) –
Required column names include
'dhi'. Optional column names are
'temp_air'; if not provided, air temperature of 20 C and wind speed of 0 m/s will be added to the DataFrame.
If weather is a tuple or list, it must be of the same length and order as the Arrays of the ModelChain’s PVSystem.
Assigns attributes to