Anssi Saari <[email protected]> wrote:
> Chris Green <[email protected]> writes:
>
> > I'm looking for a program to do simple chart plotting, e.g. I have
> > some voltage measurements taken (say) once a minute and I want to
> > display how the voltage varies over (say) a day. So that's 1440
> > measurements.
> >
> > This can be web or desktop, all I want is a window with a line drawn
> > across it really, a scale would be handy and the ability to show more
> > than one plot (e.g. voltage and current maybe).
>
> I once used the plotly library (from https://dash.plotly.com/) to
> generate web pages with weather data, just temperature and RH from a
> cheapo weather station which sends these data once a minute. I assume
> this is a similar case to yours? It was a trial only, mostly because I
> never got around to setting up a web server where I could access those
> plots. One of these days, for sure...
>
> All I really did was adapt the show_weather_station.py script at
> https://github.com/AgriVision/rpi_rtlsdr_weather_station to query my
> database and generate my plots. Basically I just threw out most of the
> script and kept the parts that did the temp and RH plots. As I recall,
> it was surprisingly simple just to mangle that script, without knowing
> much anything about plotly. The script even includes a handy date range
> selector.
>
> There are some sample plots and explanation at
> https://www.agri-vision.nl/portal/projects/25-rtl-sdr-based-weather-station-on-raspberry-pi
Thanks, that looks much like the sort of thing I'm trying to do.
show_weather_station.py seems to be the fundamental bit that I want.
... and it's all there on:-
https://github.com/AgriVision/rpi_rtlsdr_weather_station/blob/main/show_weather_station.py
Thanks some more! :-)
--
Chris Green
·
