Try using marker cluster.
See this post, its similar to your question to create clusters in leaflet.
How to create polygons around states in ...READ MORE
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You can use mtabulate in the following way:
cbind(data, ...READ MORE
You can use this command to create ...READ MORE
Use below code.
leaflet(df) %>% addTiles() %>% ...READ MORE
Use external markers by creating icons using ...READ MORE
I'm new to leaflet and working on ...READ MORE
I created a map using leaflet and ...READ MORE
Create an icon use makeicon function ...READ MORE
It's quite simple, add below snippet along ...READ MORE
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