Bob, Thanks for letting us know that you are up and running. I greatly appreciate knowing when a suggestion has worked (as I bet future google searchers do too). A couple of comments. The key option you add is `expires_after = None`. This enables MQTTSubscribeService’s cache. The `contains_total` and `conversion_type` should have no impact. The values you set them to are the default. But you have something working, so I wouldn’t change anything. I did a bit more research on `line_gap_fraction`. From reading the forums, it further confirms my understanding that it doesn’t work with null values. Stating differently, it works when a complete archive record is not in the DB but not for missing values in an archive record. So in your case, no setting of `line_gap_fraction` will fix your plots. You need to get the extraTemp2 value into the DB, which is what the MQTTSubscribeService cache does. Hopefully this makes some sense and also correct. rich
On Saturday 20 July 2024 at 15:58:26 UTC-4 bgra...@umw.edu wrote: > Rich, > As you suggested, I added the additional MQTTSubscribe code to my > weewx.conf file and it seems to be filling in the gaps. Thanks for clearing > this up for me. > > [[[lht65b]]] #105a inside temp > ignore = false # opt in for this field > name = extraTemp2 > expires_after = None # cache never expires > contains_total = false > conversion_type = float > > [[[[message]]]] > type = individual > > Gary, I "sort of" understand the line_gap_fraction--thanks for the > details. Since mine was set to 0.05 (weewx.conf 5.1), I'm not sure what > might be overiding this value. I guess it's possible that some other format > setting is affecting it. I've looked at skin.conf and weewx.conf but > nothing at least directly mentions the line_gap_fraction. > Everyone's help here has been greatly appreciated. > Cheers, > Bob > On Saturday, July 20, 2024 at 10:28:51 AM UTC-4 bell...@gmail.com wrote: > >> Gary, >> Thanks for the very clear explanation. I guess I was a bit lazy. After >> reading your post I found the documentation for it here, >> http://www.weewx.com/docs/5.1/reference/skin-options/imagegenerator/#line_gap_fraction >> Also, digging into the code seems to confirm that null/None values will >> always cause a break. See, >> https://github.com/weewx/weewx/blob/95210c4e6008b67c14220157e4a7934c1e03bd42/src/weeplot/utilities.py#L472 >> - rich >> >> On Friday 19 July 2024 at 20:49:55 UTC-4 gjr80 wrote: >> >>> On Saturday 20 July 2024 at 07:42:39 UTC+10 bell...@gmail.com wrote: >>> >>> I don’t fully understand the `line_gap_fraction` option. But I seem to >>> remember that `None` values will always cause a break in the plot… >>> >>> >>> line_gap_fraction does seem a little mystical in operation but once you >>> understand how it works it is fairly easy to use. Think of >>> line_gap_fraction as the proportion of the overall x-axis timeframe >>> that the plot engine considers to be a gap in data. So for a typical day >>> plot (27 hours or 97200 seconds) a line_gap_fraction of 0.05 means that >>> any gap in time between successive plot points of 4860 seconds (81 minutes) >>> or longer will be considered a gap and result in a gap in the plotted line. >>> If line_gap_fraction = 0.01 the gap drops to 16.2 minutes. So for data >>> with a 15 minute archive period a line_gap_fraction = 0.01 will plot a >>> continuous line provided there are no missing points. Any missing points >>> result in a gap of at least 30 minutes so line_gap_fraction = 0.01 will >>> result in gaps. In this case a line_gap_fraction = 0.02 or greater is >>> required. The default line_gap_fraction = 0.05 should work fine. If it >>> is not then something else is amiss (first thing that springs to mind is >>> the possibility that line_gap_fraction is being overridden somewhere in >>> the respective skin.conf or weewx.conf). >>> >>> The same applies for week, month and year plots, but you now apply >>> line_gap_fraction to a much longer overall x-axis timeframe meaning the >>> gap in seconds for a given line_gap_fraction value is greater . Also, >>> week, month and year plots by default plot an aggregate so the data points >>> are now spaced every 'aggregate interval' seconds and not necessarily every >>> 'archive period' seconds. >>> >>> Also, when line_gap_fraction is omitted (or set to a value <0 or >1) >>> any missing data points will be considered a gap and plotted as such. In >>> this case you definitely do not want to omit line_gap_fraction or you >>> will always have gaps. >>> >>> Gary >>> >> -- 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 weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/70da67f4-8cf6-4a05-87f0-d7b7521f6918n%40googlegroups.com.
