Hi Nevil, while not being able to help with mbtiles, maybe you want to try leafgl to view your polygons.
https://github.com/r-spatial/leafgl It should have no problems with 40k polygons. Regarding RStudio's leaflet.mapboxgl, I don't think it is intended for local use (though I might be wrong). For using locally stored tiles, I think we would need something like https://gitlab.com/IvanSanchez/Leaflet.TileLayer.MBTiles. Out of interest, are you using tippercanoe from your command line or do you have some code invoking it from R? HTH, Tim On Wed, Mar 11, 2020 at 3:00 AM nevil amos <nevil.a...@gmail.com> wrote: > > 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 > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo