Thanks for the resource, and I did look at Interactive Graphing.
The problem is that figures have built-in attributes, like SelectedData – so doing a callback for that is easy.
My problem is I want to define CUSTOM attributes and pass that to a callback.
At this point, I may have to do the very-hacky-and-inelegant-method of using dcc.Store or something similar, which really blows my mind – why can’t I do this all in memory instead of tasking a slow I/O process (comparatively) to do this?
If you could point me to an example that does this:
Custom Function → Callback Definition Listening for attribute of custom function → Triggered action causes output to pass data to children
Then I’d be very thankful. Otherwise, it seems that Plotly never considered something like this scenario which is mind-boggling to me.
Edit – I suppose the closest my request comes to is this – Can Data Attributes Be Created In Dash? except I want to have a custom function return an attribute. This is pretty depressing if true.