Another example: https://github.com/chaunceygardiner/weewx-purple/blob/e7f214539b63281d74af9e90810045dd8d1b7b80/bin/user/purple.py#L538
> On Jan 21, 2022, at 2:01 PM, Seth Ratner <[email protected]> wrote: > > It looks like there is an example in the weewx-xaggs repository. I'm about > to dive in, but from a cursory look, unlike with the scalar, I'm going to > have to figure out how to use dbmanager to pull the outtemps from the > database then iterate through each one, determine which ones are chill hours, > and then add those together, correct? > >> On Friday, January 21, 2022 at 3:49:33 PM UTC-6 [email protected] wrote: >> Let me see if I can come up with something. Give me some time. >> >>> On Fri, Jan 21, 2022 at 1:37 PM Seth Ratner <[email protected]> wrote: >>> Oh boy... >>> >>> I cant find any examples for that. If one exists, it will greatly reduce >>> the number of questions I have... >>> >>>> On Friday, January 21, 2022 at 3:24:07 PM UTC-6 [email protected] wrote: >>>> You're getting close! >>>> >>>> You're going to have to implement get_aggregate(), as well as get_scalar(). >>>> >>>> The xtypes framework has no way of taking the calculation for get_scalar() >>>> and using it to calculate an aggregate. You're going to have to do it. >>>> The good news is that once you've done it, then the framework can use that >>>> to calculate a series on its own. This is where we will find out how fast >>>> the calculation is. >>>> >>>> -tk >>>> >>>>> On Fri, Jan 21, 2022 at 12:51 PM Seth Ratner <[email protected]> wrote: >>>>> Getting Closer, but still getting errors. >>>>> >>>>> I can now see the result in the archive loop (gets sent over MQTT). But >>>>> with the seasons skin attempts to make a chart with it, I get: >>>>> >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> Caught unrecoverable exception in generator >>>>> 'weewx.imagegenerator.ImageGenerator' >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** chillHours >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** Traceback (most recent call last): >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** File "/usr/share/weewx/weewx/reportengine.py", line 196, in run >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** obj.start() >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** File "/usr/share/weewx/weewx/reportengine.py", line 281, in >>>>> start >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** self.run() >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** File "/usr/share/weewx/weewx/imagegenerator.py", line 41, in >>>>> run >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** self.genImages(self.gen_ts) >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** File "/usr/share/weewx/weewx/imagegenerator.py", line 177, in >>>>> genImages >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** start_vec_t, stop_vec_t ,data_vec_t = >>>>> weewx.xtypes.get_series(var_type, >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** File "/usr/share/weewx/weewx/xtypes.py", line 94, in get_series >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** raise weewx.UnknownType(obs_type) >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** weewx.UnknownType: chillHours >>>>> Jan 21 14:40:39 Ratner-Orchard weewx[3122] ERROR weewx.reportengine: >>>>> **** Generator terminated >>>>> >>>>> Here's the block I added in skin.conf >>>>> >>>>> [[[yearchill]]] >>>>> plot_type = bar >>>>> [[[[chillHours]]]] >>>>> aggregate_type = cumulative >>>>> aggregate_interval = day >>>>> >>>>> >>>>>> On Friday, January 21, 2022 at 2:14:11 PM UTC-6 Seth Ratner wrote: >>>>>> 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 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. >>>>>>>> >>>>>>>> -- >>>>>>> >>>>>>>> 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. >>>>> >>>>> -- >>>>> 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/cb666588-aced-461c-9171-9d48b89e85f5n%40googlegroups.com. >>> >>> -- >>> 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/8bb5d647-2f69-42b5-b5db-5b4c901e32f5n%40googlegroups.com. > > -- > 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/5c169c50-b9aa-4986-b2cc-0d58494b6665n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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