I'll join this thread for a moment. I also had the question of how to draw an additional line into a plot.
So far I haven't been able to find anything about it in the instructions. But since the topic is being discussed here... In my case, I want an additional line at 0°C on the temperature plots. This would make it very easy to see if the temperatures have gone below zero. But I only want this line at minimum temperatures below 0°C. Is there any way I can link this to a condition? [email protected] schrieb am Mittwoch, 9. März 2022 um 01:05:57 UTC+1: > I was able to reproduce your error. > > It did work with v3.7. It appears that in my zeal to allow xtypes to be > used in arbitrary plots, I broke something. > > I've opened issue #761 <https://github.com/weewx/weewx/issues/761> to > track. > > -tk > > On Tue, Mar 8, 2022 at 3:35 PM [email protected] <[email protected]> > wrote: > >> Thanks >> I won't pretend that I understood ........but it may help others. >> It did give me a clue as to how to move forward a bit .....I think >> I tried this .......and it worked ......an orange line at 4v .......1 >> step forward >> and telemetry display updates. >> [[[dayvolt]]] >> yscale = 3.6, 4.2, 0.1 >> [[[[consBatteryVoltage]]]] >> label = Transmitter battery >> color = 0xb48242 # blue >> # color = 0x4242b4 # red >> >> # place limit line on graph >> [[[[voltMin]]]] >> data_type = consBatteryVoltage - consBatteryVoltage + 4 >> label = ' ' >> color = orange >> width = 1 >> >> but I want the limit at 3.7v ........so using the above >> [[[dayvolt]]] >> yscale = 3.6, 4.2, 0.1 >> [[[[consBatteryVoltage]]]] >> label = Transmitter battery >> color = 0xb48242 # blue >> # color = 0x4242b4 # red >> >> # place limit line on graph >> [[[[voltMin]]]] >> data_type = consBatteryVoltage - consBatteryVoltage + 3.7 >> label = ' ' >> color = orange >> width = 1 >> fail ....errors in the log .......places the orange line, but telemetry >> page is now frozen >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Found >> configuration file /etc/weewx/skins/Seasons/skin.conf for report >> 'SeasonsReport' >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG user.MQTTSubscribe: >> (Driver) data-> final loop packet is tele/weather-stn-sensor/STATE >> 2022-03-09 08:56:04 AEST (1646780164): 'batteryStatus1': '0.0', >> 'consBatteryVoltage': '4.086810112', 'dateTime': '1646780164.264368', >> 'extraTemp1': '33.0', 'signal1': '1515', 'signal2': '-34.0', >> 'supplyVoltage': '12.13632011', 'txBatteryStatus': '0.0', 'usUnits': '17' >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.cheetahgenerator: >> Using search list ['weewx.cheetahgenerator.Almanac', >> 'weewx.cheetahgenerator.Current', 'weewx.cheetahgenerator.DisplayOptions', >> 'weewx.cheetahgenerator.Extras', 'weewx.cheetahgenerator.Gettext', >> 'weewx.cheetahgenerator.JSONHelpers', 'weewx.cheetahgenerator.PlotInfo', >> 'weewx.cheetahgenerator.SkinInfo', 'weewx.cheetahgenerator.Station', >> 'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo'] >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.manager: Daily >> summary version is 4.0 >> Mar 9 08:56:06 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >> Evaluation of template /etc/weewx/skins/Seasons/telemetry.html.tmpl failed. >> Mar 9 08:56:06 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >> **** Ignoring template /etc/weewx/skins/Seasons/telemetry.html.tmpl >> Mar 9 08:56:06 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >> **** Reason: cannot find 'has_data' while searching for >> 'year.consBatteryVoltage - consBatteryVoltage + 3.7.has_data' >> Mar 9 08:56:06 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >> **** To debug, try inserting '#errorCatcher Echo' at top of template >> Mar 9 08:56:06 weatherstn weewx[14006] INFO weewx.cheetahgenerator: >> Generated 7 files for report SeasonsReport in 0.29 seconds >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.manager: Daily >> summary version is 4.0 >> Mar 9 08:56:06 weatherstn weewx[14006] INFO weewx.imagegenerator: >> Generated 19 images for report SeasonsReport in 0.23 seconds >> Mar 9 08:56:06 weatherstn weewx[14006] INFO weewx.reportengine: Copied 0 >> files to /var/www/html/weewx >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Report >> 'SmartphoneReport' not enabled. Skipping. >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Report >> 'MobileReport' not enabled. Skipping. >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Report >> 'StandardReport' not enabled. Skipping. >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Report >> 'FTP' not enabled. Skipping. >> Mar 9 08:56:06 weatherstn weewx[14006] DEBUG weewx.reportengine: Report >> 'RSYNC' not enabled. Skipping. >> >> I take it that it doesn't like 3.7 ..........I don't understand >> why......... >> the windspeed example is so easy and simple and works using a number with >> a decimal point and no equation >> should I place the number in quotes ? ...........is there a workaround ? >> ............or this will never fly ? >> thanks again >> >> >> On Tuesday, 8 March 2022 at 22:56:57 UTC+10 [email protected] wrote: >> >>> You're right: it's not mentioned in the Customizing Guide, and it really >>> should be. >>> >>> I've modified the guide to include a section about the topic. Hopefully >>> it will help. *Including arbitrary expressions >>> <https://weewx.com/docs/customizing.htm#arbitrary_expressions_in_plot>* >>> >>> >>> On Mon, Mar 7, 2022 at 10:01 PM Ian Prescott <[email protected]> >>> wrote: >>> >>>> Hi >>>> Could somebody show me how to correctly display a limit / constant >>>> value on a plot >>>> some time ago I alerted to a post about how to show a constant value in >>>> a plot. >>>> I have searched but I haven't found the right words to find that post >>>> again >>>> but I copied it and use it in my skin.conf >>>> [[[daywind]]] >>>> # [[[[windSpeed]]]] >>>> # [[[[windGust]]]] >>>> >>>> # place limit line on graph >>>> [[[[windMax]]]] >>>> # data_type = function | this >>>> # label = ' ' | does >>>> # function_definition = 10.5 | not >>>> # function_type = windSpeed | work >>>> # color = red >>>> >>>> data_type = 10.5 >>>> label = ' ' >>>> color = orange >>>> width = 1 >>>> [[[[windSpeed]]]] >>>> color = 0xb48242 >>>> [[[[windGust]]]] >>>> color = 0x4242b4 >>>> I think it is a useful feature for me and it displays an orange line at >>>> 10.5 >>>> BTW the red line does not show on the plot and no errors appear in the >>>> log (debug=1) >>>> see here at oxleyweather.ddnsfree.com >>>> >>>> Now I would like to display a constant value in another plot. >>>> like this >>>> [[[dayvolt]]] >>>> yscale = 3.6, 4.2, 0.1 >>>> [[[[consBatteryVoltage]]]] >>>> label = Transmitter battery >>>> color = 0xb48242 # blue >>>> # color = 0x4242b4 # red >>>> # place limit line on graph >>>> [[[[voltMin]]]] >>>> data_type = function >>>> label = ' ' >>>> function_definition = 3.7 >>>> function_type = consBatteryVoltage >>>> color = red >>>> # width = 1 >>>> But this doesn't show a red line, and there are no complaints in the >>>> log. >>>> >>>> However if I use the wind example I get errors in the log ......... >>>> but not for the wind example ........only about the voltage limit >>>> The Customization Guide under ImageGenerator doesn't give any details >>>> Thanks >>>> >>>> Mar 8 15:46:17 weatherstn weewx[14006] INFO weewx.manager: Added >>>> record 2022-03-08 15:45:00 AEST (1646718300) to database 'weewx.sdb' >>>> Mar 8 15:46:17 weatherstn weewx[14006] INFO weewx.manager: Added >>>> record 2022-03-08 15:45:00 AEST (1646718300) to daily summary in >>>> 'weewx.sdb' >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Running reports for latest time in the database. >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Running report 'SeasonsReport' >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.restx: >>>> StationRegistry: wait interval (91800 < 604800) has not passed for record >>>> 2022-03-08 15:45:00 AEST (1646718300) >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: Found >>>> configuration file /etc/weewx/skins/Seasons/skin.conf for report >>>> 'SeasonsReport' >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.cheetahgenerator: >>>> Using search list ['weewx.cheetahgenerator.Almanac', >>>> 'weewx.cheetahgenerator.Current', 'weewx.cheetahgenerator.DisplayOptions', >>>> 'weewx.cheetahgenerator.Extras', 'weewx.cheetahgenerator.Gettext', >>>> 'weewx.cheetahgenerator.JSONHelpers', 'weewx.cheetahgenerator.PlotInfo', >>>> 'weewx.cheetahgenerator.SkinInfo', 'weewx.cheetahgenerator.Station', >>>> 'weewx.cheetahgenerator.Stats', 'weewx.cheetahgenerator.UnitInfo'] >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.manager: Daily >>>> summary version is 4.0 >>>> Mar 8 15:46:17 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >>>> Evaluation of template /etc/weewx/skins/Seasons/telemetry.html.tmpl failed. >>>> Mar 8 15:46:17 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >>>> **** Ignoring template /etc/weewx/skins/Seasons/telemetry.html.tmpl >>>> Mar 8 15:46:17 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >>>> **** Reason: cannot find 'has_data' while searching for 'year.3.7.has_data' >>>> Mar 8 15:46:17 weatherstn weewx[14006] ERROR weewx.cheetahgenerator: >>>> **** To debug, try inserting '#errorCatcher Echo' at top of template >>>> Mar 8 15:46:17 weatherstn weewx[14006] INFO weewx.cheetahgenerator: >>>> Generated 7 files for report SeasonsReport in 0.29 seconds >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.manager: Daily >>>> summary version is 4.0 >>>> Mar 8 15:46:17 weatherstn weewx[14006] INFO weewx.imagegenerator: >>>> Generated 19 images for report SeasonsReport in 0.23 seconds >>>> Mar 8 15:46:17 weatherstn weewx[14006] INFO weewx.reportengine: Copied >>>> 0 files to /var/www/html/weewx >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Report 'SmartphoneReport' not enabled. Skipping. >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Report 'MobileReport' not enabled. Skipping. >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Report 'StandardReport' not enabled. Skipping. >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Report 'FTP' not enabled. Skipping. >>>> Mar 8 15:46:17 weatherstn weewx[14006] DEBUG weewx.reportengine: >>>> Report 'RSYNC' not enabled. Skipping. >>>> >>>> -- >>>> 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/CAN84nRuRrvwvW5zhONY4n%2B%2BydT74zUiuE%3DP6h9Ej3tdMXpeLRg%40mail.gmail.com >>>> >>>> <https://groups.google.com/d/msgid/weewx-user/CAN84nRuRrvwvW5zhONY4n%2B%2BydT74zUiuE%3DP6h9Ej3tdMXpeLRg%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/66f61c5e-0f30-4edd-be61-85e468f968a8n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/weewx-user/66f61c5e-0f30-4edd-be61-85e468f968a8n%40googlegroups.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/70d81748-20df-45d4-b198-ef4fec80e4dfn%40googlegroups.com.
