Is there a facility to export trace datapoints from plotly.js?
The user case is to export the current chart data and save it to a persistent context. Then if there is a power failure, or system reboot, then the data can be fed back into the chart to redraw it (at the point in which it was last saved).
Any help would be appreciated please.
I can export the data when using ‘bulk data’ (ie, arrays of data & corresponding timestamps) are being used, but when for example; a single value is being input every 10 seconds, and plotted against a timestamp, so I have a trace of 100 points. How do I retrieve those 100 datapoints & timestamps?
I have the exact same need. Did you manage to get this done?
There is the following function Plotly.Plots.graphjson that returns in json format all the information of the graph (data, layout, config) which you can save in a file or database to recover it later, the information can also be accessed from a reference to the containing layer, layer._fullData to obtain the stroke data, layer._fullLayout for the layer configuration and in layer._context the rest of the configuration then you could use the json stringify function and save it in some file