Leaflet is an open-source JavaScript library for interactive maps.
Shiny is an open-source R framework for interactive webapps.
This R package makes it easy to integrate and control Leaflet maps from Shiny applications. Here's an example application (see inst/example for the source).
Population data is from US Census Bureau: http://www.census.gov/popest/data/intercensal/cities/cities2010.html http://www.census.gov/popest/data/intercensal/cities/files/SUB-EST00INT.csv~/lea
Location data is from USGS: http://geonames.usgs.gov/domestic/download_data.htm http://geonames.usgs.gov/docs/stategaz/NationalFile_20130602.zip
This package is licensed to you under the terms of the GNU General Public License version 3 or later.
Copyright 2013 RStudio, Inc.