I'm close, I think, except now I'm getting this every loop or report generation.
DEBUG weewx.wxservices: Unknown extensible type 'chillHours' There are a couple things I'm unsure of that might be causing this - I used the group type group_elapsed because it seemed like the best fit - The last line of the python file, modeled after the VaporPressure.py example, is not part of either class, so I'm not sure what runs it. Here's the code: https://github.com/lordratner/weewx_chillHours/blob/main/chill_hours.py It's been added to weewx.conf engine section in xtypes, and I've confirmed the service is loading. Thoughts? On Thursday, January 20, 2022 at 8:26:59 PM UTC-6 [email protected] wrote: > I'd try it as a pure xtype first, and see what kind of performance I got. > If it's slow, put it in the database. > > You can query the database directly, but the advantage of using xtypes > system to do your queries is that it can automatically optimize whether or > not to use the daily summaries. > > There's a brief section > <https://github.com/weewx/weewx/wiki/WeeWX-V4-user-defined-types#xtypes-api> > in the wiki about the API. It's pretty self-explanatory, except about where > db_manager comes from. That's an instance of > weewx.manager.DaySummaryManager. Look in weewx/manager.py for how to create > one. There are some convenient static methods for doing so. > > On Thu, Jan 20, 2022 at 6:15 PM Seth Ratner <[email protected]> wrote: > >> Thanks Tom >> >> Final questions for the night, I promise 🤣😂 >> >> Would you put this one the database, or just let WeeWx calculate it using >> the xtype each time? >> >> Second, is there an API or interface or whatever where another >> application can query WeeWX for some sort of weather data? In this case, >> I'd like my irrigation software to query WeeWX for the ET, total rain, and >> chill hours of a given time frame. >> >> Or do I just have to read the database directly? >> >> >> >> On Thu, Jan 20, 2022, 19:15 Tom Keffer <[email protected]> wrote: >> >>> On Thu, Jan 20, 2022 at 4:01 PM Seth Ratner <[email protected]> wrote: >>> >>>> Would you add the step from the xType guide of adding chillHours to >>>> [StdWXCalculate] [[Calculations]]? Or would the "synthetic type" concept >>>> mean it only exists when it is called on. >>>> >>>> As I understand it, adding it to [StdWXCalculate] [[Calculations]] >>>> would add chillHours to the loop, but it would not be in the archive >>>> unless >>>> I also added a column for it with the same type name. >>>> >>> >>> It doesn't hurt to add to StdWXCalculate, but it's really only >>> necessary if you want to add the results to the database. And, yes, it >>> will only get added to the database if there's a matching column in the >>> schema. >>> >>>> >>>> So on my Belchertown skin, where I want total Chill Hours from Oct - >>>> May displayed, if I add it to the archive WeeWX will use the database to >>>> calculate the total (just adding them together), whereas if I don't add it >>>> to the archive, WeeWX will have to run the (if outTemp < 45 then >>>> chillHours >>>> = archive_interval) for every archive row in that timespan, then sum that? >>>> >>> >>> Maybe. For the ImageGenerator that comes with WeeWX, if a type is not >>> available in the database, it will try to calculate it "on the fly" using >>> xtypes. However, I have no idea what the Belchertown skin does. I kind of >>> doubt it leverages xtypes. >>> -tk >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "weewx-user" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/weewx-user/7ysYvSUMOOo/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/weewx-user/CAPq0zEAdDBGTow7i55XfnGPzncQjdmiH%2BSk%3DL9_ZoE85QXKO%3Dw%40mail.gmail.com >>> >>> <https://groups.google.com/d/msgid/weewx-user/CAPq0zEAdDBGTow7i55XfnGPzncQjdmiH%2BSk%3DL9_ZoE85QXKO%3Dw%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> > 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/CAHTssjOF_Q65XveoboAwRV%2Br5-oNb8curD7LZTTmuD7Y0-EAjQ%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/weewx-user/CAHTssjOF_Q65XveoboAwRV%2Br5-oNb8curD7LZTTmuD7Y0-EAjQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/5e505ef0-2ee4-4778-93b4-5f1bcea4b733n%40googlegroups.com.
