My First Leaflet Map

Introduction

Leaflet is one of the most popular Javascript libraries for creating interactive maps. The leaflet R package allows you to create your own leaflet maps without needing to know any Javascript!

My First Map

Getting started with leaflet is easy. The leaflet() function creates a map widget that you can store in a variable so that you can modify the map later on. You can add features to the map using the pipe operator (%>%) just like in dplyr. The addTiles() function adds mapping data from Open Street Map.

My First Map - Plot of St Louis Arch

library(leaflet)

## Warning: package 'leaflet' was built under R version 3.5.2

my_map <- leaflet() %>% 
  addTiles()
my_map <- my_map %>%
            addMarkers(lat=38.624691, lng=-90.184776, popup="St Louis Arch")
            my_map