ChoroLibre: Supporting Georeferenced Demographic Information Visualization Through Hierarchical Choropleth Maps

The advent of Smart City and Big Data have generated many data on demographical factors, such as health, public transportation, basic sanitation, education, among others. However, this growing volume of data is little related to their demographic contexts, and when maps represent these data, they generally do not have the interactivity to allow exploration, either by changing the studied territory, increasing or decreasing its scope, relating other data for analysis, visually encoding a data, among other possibilities. Thus, this work aims to present a system that represents demographic data, specifically in geographic maps, and how to make it interactive for the user, presenting the software ChoroLibre as a final product: an opensource tool for visualizing hierarchical and interactive Choropleth geographic maps for the Web. To this end, this paper describes the architecture, implementation, methodology, technologies, and the developed functionalities of the ChoroLibre tool.