DataCamp

Adding Popups and Storing your Map

To make our map more informative we can add popups. To add popups that appear when a marker is clicked we need to specify the popup argument in the addMarkers() function. Once we have a map we would like to preserve, we can store it in an object. Then we can pipe this object into functions to add or edit the map's layers.

dc_nyc <- 
    leaflet() %>% 
        addTiles() %>% 
        addMarkers(lng = -73.98575, lat = 40.74856, 
                   popup = "DataCamp - NYC") 

dc_nyc %>% 
    setView(lng = -73.98575, lat = 40.74856, 
            zoom = 2)

Let's try adding popups to both DataCamp location markers and storing our map in an object.

Add the popup argument to addMarkers() to display the value in the hq column and store the leaflet map in an object called map.
Center the view of map on the Belgium HQ with a zoom of 5 and store it in map_zoom.
Print the map_zoom object.

Take Hint (-30 XP)

Exercise

Adding Popups and Storing your Map

Instructions