This section is dedicated to map with markers displayed on top of it. These markers can be circles with size proportional to a numeric value, resulting in a bubble map. Before exploring this section, learn how to build the map background with R.
The leaflet R package is a wrapper of the
interactive maps in minutes with R. Maps can be exported and standalong html files, or be
embeded in a R markdown file or a shiny application. Check the 3 examples below to
get the basics of interactive bubble maps with R.
Note: this great online course is dedicated to leaflet and provides a complete overview.
Learn how to add a marker on a map with leaflet. Circle, rectangle, pointer and more. Link it to tooltip.
Leaflet maps are interactive. Try to zoom and drag the map below. Hover a circle to get more information about it. See Code
ggplot2 is probably the best option if you're looking to build a static bubble map. It offers all the flexibility of the grammar of graphic, and allow to re-use all the knowledge you learned building other types of chart with it. If you don't know about ggplot2, read this introduction.
plotly package provides the magic
ggplotly() function. This function will turn any of your static bubble map made with ggplot2 interactive. With only one more line of code:
cartography package is a great alternative to the tidyverse to build maps with R. It provides many helpers specially made for maps.