Preserving the zoom of choropleth in Dash

Is there a way to preserve zoom state of a choropleth between callbacks?

I am currently updating the choropleth via a callback function that generates a new figure and returning it to gcc.Graph. Replacing a whole figure should be easier than updating individual elements in an existing figure’s data and layout.

I tried to do the following:

1. Track relayoutData when user zooms using State callback that’s linked to gcc.Graph.
2. Generate a new choropleth.
3. Change layout properties of new choropleth according to relayoutData.
4. Return new choropleth with updated layout to gcc.Graph

I used fig['layout'].update(relayoutData) to change the layout peroperties, but it didn’t work because of error
‘mapbox._derived’ is not a valid property for plotly.graph_objs.Layout

Any thoughts?

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