Opensource: 5 open source tools for building a map app in a snap

Opensource: 5 open source tools for building a map app in a snap. “All the attention geographical information systems (GIS) have gotten in recent years may make you think they are something new. In fact, geospatial data helped play a major role more than 160 years ago in identifying the source of the deadly London cholera outbreak of 1854. Dr. John Snow, a local physician, suspected that contaminated drinking water was the source of the disease. During the investigation, he plotted a density map of cholera cases and interviewed residents in the affected neighborhood to learned about their water use habits. His analysis showed a high number of incidents near a communal water pump. In this article, I’ll introduce five modern open source mapping tools, and then help you get started building your first GIS app.”