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PaulC91/leaflet_labels_options.R

Created January 21, 2020 11:04
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different options for rendering tiles in R leaflet
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leaflet_labels_options.R
# OSM tile with no labels
osm_nolabels <- "https://tiles.wmflabs.org/osm-no-labels/{z}/{x}/{y}.png"
# OSM humanitarian tile (just for ref)
osm_hot <- "http://a.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png"
# if you a mapping a choropleth with polygons, this will render place labels above the polygons
leaflet() %>%
addMapPane(name = "polygons", zIndex = 410) %>%
addMapPane(name = "maplabels", zIndex = 420) %>% # higher zIndex rendered on top
addTiles(urlTemplate = osm_nolabels) %>%
addProviderTiles("CartoDB.PositronOnlyLabels", options = leafletOptions(pane = "maplabels"), group = "Place names") %>%
addPolygons(...) %>%
addLayersControl(overlayGroups = c("Place names"), options = layersControlOptions(collapsed = FALSE))
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