2017-11-15, 11:45 AM
A few weeks ago I've tried to plot some time series data from SQL to node-red and was very unpleased by the results. So I came to the same conclusion as you, that I need some external plotting library but couldn't find the time to explore.
For a better understanding: how do you want to plot the voltage? (I've picked some random images from google I hope that's ok)
With two x-axis...
![[Image: g0qTA.png]](https://i.stack.imgur.com/g0qTA.png)
source:https://i.stack.imgur.com/g0qTA.png
...or with multiple series in one plot...
![[Image: PlotMultipleTimeSeries.png]](https://peltiertech.com/images/2016-08/PlotMultipleTimeSeries.png)
source:https://peltiertech.com/images/2016-08/PlotMultipleTimeSeries.png
... or do you want to select two specific dates and compare the two graphs?
![[Image: line_chart_2_lines.jpg]](https://www.tutorialspoint.com/r/images/line_chart_2_lines.jpg)
source:https://www.tutorialspoint.com/r/images/line_chart_2_lines.jpg
I'm very interested in your results maybe I'll find some time to dig a little bit in the deeps of google as well.
For a better understanding: how do you want to plot the voltage? (I've picked some random images from google I hope that's ok)
With two x-axis...
source:https://i.stack.imgur.com/g0qTA.png
...or with multiple series in one plot...
source:https://peltiertech.com/images/2016-08/PlotMultipleTimeSeries.png
... or do you want to select two specific dates and compare the two graphs?
source:https://www.tutorialspoint.com/r/images/line_chart_2_lines.jpg
I'm very interested in your results maybe I'll find some time to dig a little bit in the deeps of google as well.