Change options on layer groups. Currently the only option is to control what
zoom levels a layer group will be displayed at. The zoomLevels
option
is not compatible with layers control; do not both
assign a group to zoom levels and use it with addLayersControl()
.
Examples
pal <- colorQuantile("YlOrRd", quakes$mag)
leaflet() %>%
# Basic markers
addTiles(group = "basic") %>%
addMarkers(data = quakes, group = "basic") %>%
# When zoomed in, we'll show circles at the base of each marker whose
# radius and color reflect the magnitude
addProviderTiles(providers$Esri.WorldTopoMap, group = "detail") %>%
addCircleMarkers(data = quakes, group = "detail", fillOpacity = 0.5,
radius = ~mag * 5, color = ~pal(mag), stroke = FALSE) %>%
# Set the detail group to only appear when zoomed in
groupOptions("detail", zoomLevels = 7:18)
#> Assuming "long" and "lat" are longitude and latitude, respectively
#> Assuming "long" and "lat" are longitude and latitude, respectively