how to set zoom level/view of leaflet map

Question

I have a map in leaflet in RShiny which have markers plotted and once I click a marker it adds circles to map showing all the related points to the marker.

What I want to do is to set zoom/view of the map in such a way that all the related circles are visible.

The number of circles varies as per markers i.e. some marker have 1 or 2 circles while some have more. Also, the location of circles varies across the USA so they can be placed in one city or another state.

Following is the code I am using to add circles to existing map

  proxy <-leafletProxy("map",data = df)%>%
  clearMarkers()%>%
  addCircleMarkers(lat = ~lat,lng = ~lng,layerId = ~circle_pt,fillColor = 
 'green',opacity = 0.5,color = 'red',fillOpacity = 1)%>% clearPopups()%>%
  addPopups(lat=~lat,lng=~lng,~as.character(circle_pt))

map=original map with markers df=lat lng of circles with associated properties of selected marker in map

I want to set zoom level as shown in figure 2.

Kindly help me to identify how to calculate optimal zoom level in leaflet in shiny.

Regards,

Answer 1

If you want to set your initial view, you can use:

setView(lng, lat, zoom = zoom_level)

which is straight from the documentation.

Unless you provide more information, nobody will be able to understand the part where you're saying "in such a way that all the related circles are visible."