Map view state

[bdbmax]

Hello Anthony!

Maybe you've already implemented this: is there a way to retrieve the view states from the map in R, at the moment with rdeck? States such as zoom and central point. Mapdeck does this with input${map_id}_view_change, I guess using onViewStateChange function from deck.gl.

And thanks for your package!

[bdbmax]

My question maybe goes deeper, I'm wondering about retrieving any type of information from the deck to R, so that the zoom, bbox, a click event, etc. can be used as an input in other R calculations. There's the pickable argument to every layer, which I believe is used to inform a click event on an object in a pickable layer? Is this already fully implemented in rdeck, or it is only used in the hover event situation?

[anthonynorth]

Currently, pickable is used only for tooltips via onHover. I'm currently implementing feature click for shiny, it'll be ready (probably) by tomorrow.

onViewStateChange is trivial, that'll be ready soon also.

[bdbmax]

Great work! Thanks!

[anthonynorth]

Not finished yet. View state bounds is broken for the viewstate event, I'll also add util functions to retrieve these values from the input (so input[[magic_string]] isn't required)

[anthonynorth]

I've added getter utilities for retrieving event data from the map in shiny.

The magic string approach will still work, but consider that to be a private api. Event names and payload structure may change in future.