I'm not sure what you mean by StdService. That's the abstract base class all the services inherit from.
In any case, if a service is to augment a record, *it must check what unit system the incoming record is in*, then convert what it is about to add to that unit system. There are many utilities in weewx.units for doing this. In particular, look at weewx.units.convertStd() <https://github.com/weewx/weewx/blob/master/bin/weewx/units.py#L1297>. Also, look at ValueTuples, also to be found in weewx.units. Say you are about to add a wind speed that is m/s. It would look something like this (NOT TESTED): def new_archive_record(self, event): my_wind_speed = (obtained from somewhere) # Create a Value Tuple: wind_speed_vt = weewx.units.ValueTuple(my_wind_speed, 'meter_per_second', 'group_speed') # Convert to the same unit system as the record wind_speed_converted_vt = weewx.units.convertStd(wind_speed_vt, event.record['usUnits'}) # Put the converted value into the record: event.record['windSpeedNetatmo'] = wind_speed_converted_vt.value On Sun, Sep 27, 2020 at 9:33 AM flor...@pre-vost.fr <floren...@pre-vost.fr> wrote: > Hi, > > I work to implement a second data source with Netatmo Station and let the > driver to the Davis Vantage Pro 2. > > But the new StdService can't convert US unit to my database unit (Database > is set to Metric). > I've set this on the top of my py file but the conversion doesn't work : > > import weewx.units > from weewx.engine import StdService > > weewx.units.obs_group_dict['windSpeedNetatmo'] = 'group_speed' > weewx.units.obs_group_dict['windGustNetatmo'] = 'group_speed' > weewx.units.obs_group_dict['rainNetatmo'] = 'group_rain' > weewx.units.obs_group_dict['windGustDirNetatmo'] = 'group_direction' > weewx.units.obs_group_dict['windDirNetatmo'] = 'group_direction' > weewx.units.obs_group_dict['barometerNetatmo'] = 'group_pressure' > weewx.units.obs_group_dict['outTempNetatmo'] = 'group_temperature' > weewx.units.obs_group_dict['datetimeNetatmo'] = 'group_time' > > The StdService can convert unit or not ? > > Thank's a lot. > > > -- > You received this message because you are subscribed to the Google Groups > "weewx-development" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-development+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-development/18d0423d-2722-46f3-a834-9516e3a008d0n%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-development/18d0423d-2722-46f3-a834-9516e3a008d0n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "weewx-development" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-development+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-development/CAPq0zECJsGNcmDRR3gYeHwefna1az-YCQGuFZvH8zjDc%3DM83Sw%40mail.gmail.com.
