The other approach is to give WeeWX at least one co2 value per archive period (it can be the same value) but that is a function of your data source and the driver being used and I don’t know the limitations/capabilities of each.
Gary On Sunday, 5 December 2021 at 05:56:10 UTC+10 gjr80 wrote: > The issue here is that the ‘co2 field’ receives data only once per hour, > so based on a 15 minute archive period only one in four archive records > will have co2 data. Changing the accumulator type and extraction policy > will not change this. I would leave the co2 accumulator settings out of > weewx.conf. I doubt whether $last will be much help either; $last displays > data from the last known good record in the database as opposed to the > current record used by $current. If there is no co2 data in most records > then $last will provide a similar result. > > You may have better luck with some sort of aggregate over the past hour, > say something like (untested) $span($hour_delta=1).co2.avg. The actual > aggregate is probably meaningless since you only have one value per hour so > min be mx will work just as well. > > Gary > On Sunday, 5 December 2021 at 03:59:46 UTC+10 [email protected] wrote: > >> Sorry, here is some info. This time, I re-inserted the [Accumulator] >> paragraph at a different place in weewx.conf and it restarted without an >> exit. The web data is still showing "$last.co2" >> It ran for a while and then stopped. Debug file attached. Thanks >> weewx.conf >> >> # Options for 'MQTTSubscribeService' >> [Accumulator] >> [[co2]] >> accumulator = firstlast >> extractor = last >> >> [MQTTSubscribeService] >> # This section is for the MQTTSubscribe service. >> >> # Turn the service on and off. >> # Default is: true >> # Only used by the service. >> enable = true # false >> ================================================== >> index.html.tmpl >> <tr class = "even"> >> <td class="stats_label">105 Crawl Temperature</td> >> <td class="stats_data">$current.extraTemp1 / >> $current.extraTemp1.degree_C</td> >> </tr> >> <tr class = "even"> >> <td class="stats_label">CO2 level</td> >> <td class="stats_data">$last.co2</td> >> </tr> >> >> >> ================================================== >> >> Standard web page reads: (http://grattans.org/wx) >> >> 105 Crawl Temperature 72.0°F / 22.2°C >> CO2 level $last.co2 >> >> On Saturday, December 4, 2021 at 12:07:09 PM UTC-5 vince wrote: >> >>> On Saturday, December 4, 2021 at 7:16:00 AM UTC-8 [email protected] wrote: >>> >>>> I tried changing $current.co2 to $last.co2 but it only printed >>>> "$last.co2" on the web page. >>>> >>>> Adding the [Accumulator] section to weewx.conf only caused an error >>>> and exit when I restarted weewx. I tried adding this in several places but >>>> none seems to let weewx restart without an exit error. Is there a special >>>> place to add this? Couldn't find anything in the doc about placement. >>>> Thanks >>>> >>>> >>> Usual answers apply. >>> >>> Unless you post the error messages verbatim and/or the changes you made >>> to the skin, we are not going to be able to help you. >>> >>> >> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/fc5c4e14-161c-487f-adaf-49d5d8193787n%40googlegroups.com.
