Thanks for the quick turnaround, I've put that new version in place and will see how it goes.
On Thu, 27 Sep 2018 at 01:28, Thomas Keffer <tkef...@gmail.com> wrote: > OK, replace your copy of weeplot/utilities.py with the attached. > > Incidentally, good sleuthing when you figured out the problem! It made it > easy to come up with the fix. > > -tk > > On Tue, Sep 25, 2018 at 2:17 PM R Sparkes <rjspar...@gmail.com> wrote: > >> Excellent! >> Much appreciated. >> >> On Tue, 25 Sep 2018 at 23:18, Thomas Keffer <tkef...@gmail.com> wrote: >> >>> I was able to reproduce this. I've created issue #344 >>> <https://github.com/weewx/weewx/issues/344> to track. >>> >>> Shouldn't be too hard to fix. >>> >>> -tk >>> >>> On Mon, Sep 24, 2018 at 11:44 PM Greeebs <rjspar...@gmail.com> wrote: >>> >>>> Hi all, >>>> New weewx user here using a home brew weather station based on >>>> Arduino's and nRF24L01+ radios. >>>> I wrote my own driver to accept packets on the nRF24L01 attached to the >>>> RPi and weewx is happily accepting my LOOP packets and producing reports >>>> every archiving period. I've also managed to import the last 18 months of >>>> weather data I had collected prior to installing weewx. Until today, weewx >>>> has been going fantastically. >>>> >>>> Today I encountered a weird issue which I've not found described >>>> elsewhere. I was getting a divide by zero error during graph generation and >>>> none of my graphs were being updated. >>>> >>>> I had a period of 24+ hours where my humidity was stuck at 100%. As >>>> soon as it dropped to 99%, the error went away and all of my graphs were >>>> updated. >>>> >>>> It turns out that if you specify only a maximum value for a graph, and >>>> have a period where the reading for the entire graph period was at that >>>> maximum, you get the divide by zero error. >>>> Is this a known bug? >>>> >>>> Here's the relevant section from the log: >>>> Sep 25 06:26:19 hub-pi weewx[436]: reportengine: Caught unrecoverable >>>> exception in generator weewx.imagegenerator.ImageGenerator >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** float division by zero >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** Traceback (most recent >>>> call last): >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weewx/reportengine.py", line 239, in run >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** obj.start() >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weewx/reportengine.py", line 273, in start >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** self.run() >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weewx/imagegenerator.py", line 32, in run >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** >>>> self.genImages(self.gen_ts) >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weewx/imagegenerator.py", line 235, in genImages >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** image = >>>> plot.render() >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weeplot/genplot.py", line 195, in render >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** sdraw = >>>> self._getScaledDraw(draw) >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weeplot/genplot.py", line 222, in _getScaledDraw >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** ((self.xscale[0], >>>> self.yscale[0]), (self.xscale[1], self.yscale[1]))) >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** File >>>> "/usr/share/weewx/weeplot/utilities.py", line 317, in __init__ >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** self.yscale = >>>> -float(lri[1] - uli[1]) / float(urs[1] - lls[1]) >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** ZeroDivisionError: >>>> float division by zero >>>> Sep 25 06:26:19 hub-pi weewx[436]: **** Generator terminated >>>> Sep 25 06:26:19 hub-pi weewx[436]: copygenerator: copied 0 files to >>>> /var/www/html/weewx >>>> >>>> >>>> Here's the relevant section from the skin.conf: >>>> [[[dayhum]]] >>>> yscale = None, 100, None >>>> [[[[outHumidity]]]] >>>> >>>> >>>> -- >>>> 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. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> 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/H1C8sLDALWs/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> weewx-user+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> 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. >> For more options, visit https://groups.google.com/d/optout. >> > -- > 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/H1C8sLDALWs/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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