Mastering Data Analysis with R

Interactive maps

Besides being able to use Web-services to download map tiles for the background of the maps created in R, we can also rely on some of those to generate truly interactive maps. One of the best known related services is the Google Visualization API, which provides a platform for hosting visualizations made by the community; you can also use it to share maps you've created with others.

Querying Google Maps

In R, you can access this API via the googleVis package written and maintained by Markus Gesmann and Diego de Castillo. Most functions of the package generate HTML and JavaScript code that we can directly view in a Web browser as an SVG object with the base plot function; alternatively, we can integrate them in a Web page, for example ...