Weather statistics file is blank

chris · May 7, 2025, 7:09pm

Thanks for clarifying, @Mo .

This seems like a limitation of all of the new changes that we made to the OpenStudio workflows. I should be able to fix it if I can understand it better.

We try to assign the ASHRAE climate zone using the STAT file next to the EPW in this part of the new “Model to OSM” component:

github.com

ladybug-tools/honeybee-grasshopper-energy/blob/master/honeybee_grasshopper_energy/src/HB Model to OSM.py#L203-L207


      
          if sim_par.sizing_parameter.climate_zone is None:
              stat_file = os.path.join(folder, epw_file_name.replace('.epw', '.stat'))
              if os.path.isfile(stat_file):
                  stat_obj = STAT(stat_file)
                  sim_par.sizing_parameter.climate_zone = stat_obj.ashrae_climate_zone

… and, if it doesn’t get assigned there, it is supposed to be set by looking over the timeseries data in the EPW:

github.com

ladybug-tools/honeybee-openstudio/blob/master/honeybee_openstudio/simulation.py#L59-L61


      
          if not cz_set:  # use temperature in the EPW to estimate the climate zone
              epw = EPW(full_path)
              climate_zone_objs.setClimateZone('ASHRAE', epw.ashrae_climate_zone)

Can you share the URL to the weather data that you are using so that I can see if I can recreate your issue?