def ddy_from_epw(epw_file, sim_par):
"""Produce a DDY from an EPW file."""
epw_obj = EPW(epw_file)
des_days = [
epw_obj.approximate_design_day('WinterDesignDay'),
epw_obj.approximate_design_day('SummerDesignDay')
]
sim_par.sizing_parameter.design_days = des_days
# assign design days from the EPW
msg = None
folder, epw_file_name = os.path.split(_epw_file)
ddy_file = os.path.join(folder, epw_file_name.replace('.epw', '.ddy'))
if os.path.isfile(ddy_file):
try:
_sim_par_.sizing_parameter.add_from_ddy_996_004(ddy_file)
except AssertionError:
msg = 'No design days were found in the .ddy file next to the _epw_file.'
else:
msg = 'No .ddy file was found next to the _epw_file.'
if msg is not None:
epw_obj = EPW(_epw_file)
des_days = [
epw_obj.approximate_design_day('WinterDesignDay'),
epw_obj.approximate_design_day('SummerDesignDay')
]
_sim_par_.sizing_parameter.design_days = des_days
msg = msg + '\nDesign days were generated from the input _epw_file but this ' \
'\nis not as accurate as design days from DDYs distributed with the EPW.'
give_warning(ghenv.Component, msg)
print msg
# create the strings for simulation paramters and model
ver_str = energyplus_idf_version() if energy_folders.energyplus_version \
is not None else energyplus_idf_version(compatibe_ep_version)
sim_par_str = _sim_par_.to_idf()
model_str = _model.to.idf(_model,
schedule_directory=sch_directory,
patch_missing_adjacencies=True)
