[R-sig-Geo] viewing locally hosted mbtiles vector tiles using leaflet.mapboxgl?

[nevil amos]

I am working on a shiny/ leaflet map project which requires display of a
large polygon dataset  (40,000 polygons ~92MB sf object).
Needless to say it take quite a time to render the sf object and zoom in
and out.

Simplifying the polygons is not an option.

leaflet.mapboxgl  https://github.com/rstudio/leaflet.mapboxgl package
allows adding of Mapbox GL layers to a leaflet map.

Since I am using my own local tiles  there should be no need for a maxbox
access token.

If possible I would like to make use of leaflet.mapboxgl: addMapboxGL() to
display vector tiles ( as .mbtiles) of the polygons that have been pre-
rendered from the polygon dataset using tippecanoe
https://github.com/mapbox/tippecanoe and served using mbtileserver
https://github.com/consbio/mbtileserver all on the same local machine.
mbtileserver is running from the project directory, and the mbtiles are  in
the path: <R project directory>/tilesets/mytiles.mbtiles
I can vie the preview in the bowser a
http://localhost:8000/services/myTiles/map

however the polygons do not dispay in leaflet in r

As this requires use of tippecanoe and mbtileserver I cannot post a repro,
however below is a pared down version fo the code I am using :


library(leaflet)
library(leaflet.mapboxgl)

options(mapbox.accessToken=NA)

base_map <- leaflet() %>%
 setView(lng = 145,lat = -37,zoom = 7)%>%
 addProviderTiles("Esri.WorldTopoMap", group = "ESRI Topo") %>%
  addMapox http://localhost:8000/services/myTiles ")

have I simply got the wrong format/ incomplete URL fo the  addMapboxGL ? If
so what should it be?

thanks

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