Sorry. My fault for not thinking this through. It will still end up being a null value in the database, so when it's read back in, it takes on the value of None.
I think you're back to either a separate database, or using large aggregation intervals and using aggregation type ".last". -tk On Wed, May 20, 2020 at 3:48 AM Pila <[email protected]> wrote: > If a line has an embedded value of None, it is considered to be two > separate line segments, regardless of the setting of gap_fraction. So, I > would suggest leaving the data value out entirely, rather than setting it > to None. >> >> >> Does that make sense? >> >> > I believe I got it! I think my problem is with using the pond.py to read > the data and how it reacts when the field is empty. If I understand well, a > command: > > event.record['leafTemp1'] = float(value[0]) > > will add the data to the database even if nothing is there to be add. > Instead of simply skipping the add operation, it will add empty data > represented by None. None breaks line in plot. If the above line would not > execute, nothing would be placed in the database and the line would not be > broken. > > Now I save something in each pass: real data or "Hey, this is empty!". > Instead, I want to save the data only once per hour and nothing in between! > > I do not know Python but am a programmer. I expected this in pond.py > should fix the issue: > if value[0]: > event.record['leafTemp1'] = float(value[0]) > > I tried this but it seems to not work. But, if I am on the right track, I > may have been to quick. To test, I can clear the fields between > measurements. > > > > -- > 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/1e3e3177-4e1c-4e62-a51c-4ba746930079%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/1e3e3177-4e1c-4e62-a51c-4ba746930079%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/CAPq0zEAO7YppjED_1iznvO4Re7K13fuOhbF2XVyU8Q2w6sW3OQ%40mail.gmail.com.
