Instructions

Pakistan few Big Cities

library(leaflet)
## Warning: package 'leaflet' was built under R version 4.0.2
m <- leaflet() %>%
  addTiles() %>%  # Add default OpenStreetMap map tiles
  addMarkers(lat=33.738045,lng=73.084488,popup="Islamabad Capital Territory, Pakistan") %>%
  addMarkers(lat=24.860966,lng=66.990501, popup="Karachi, Pakistan") %>%
  addMarkers(lat=31.418715,lng=73.079109, popup="Faisalabad, Pakistan") %>%
  addMarkers(lat=31.582045,lng=74.329376, popup="Lahore, Pakistan") %>%
  addMarkers(lat=29.395721,lng=71.683334, popup="Bahawalpur, Pakistan") %>%
  addMarkers(lat=30.181459,lng=71.492157, popup="Multan, Pakistan") #%>%
m  # Print the map

Mapping Clusters

df <- data.frame(lat=runif(500, min=24.80, max = 33.75 ),
                 lng=runif(500, min=66.99, max = 74.33 )
                 ) 

df %>%
leaflet() %>%
addTiles() %>%  
addMarkers(clusterOptions = markerClusterOptions())