Free data viewers for a variety of GIS data formats. These viewers allow you to display geographic data as well as perform some basic GIS functions.
The biggest mapping fun at Christmas time is NORAD’s Santa tracking. The tracking started back in 1955 when a Sears department store misprinted the number children could call to get updates on Santa’s whereabouts. The number instead went through to the Colorado Springs’ Continental Air Defense Command (CONAD) Center. The then Director […]
Demographic trends in the U.S. have always been a tradition and a wealth of information. After all, the United States government conducts an official census of every household and every person living within its borders every ten years. That census is not only mandated by the U.S. Constitution but the […]
I do pro bono GIS work from time to time, and a recent contribution was towards a local school that was undergoing a capital campaign to build science and computer labs to enhance the quality of education at that elementary school. A non-profit, this school needed to raise funds that […]
After a lengthy battle in the court system, California’s Supreme Court has finally ruled in favor of allowing public access to the government’s GIS data in Orange County. Back in 2007, the Sierra Club sued the county for the right to use its GIS data for environmental mapping projects. Orange County resisted, however, claiming that the digital maps did not fall under the Public Records Act.
John Snow’s well known cholera map is often cited as one of the earliest known examples of using geographic inquiry to understand a health epidemic. Starting on August 31, 1854, an outbreak of cholera hit the London district called Soho. Over the course of three days, 127 people died from […]
Looking for free and downloadable GIS data for the United States? Listed here are sources of free and downloadable data by state. Got a GIS data resource? Fill out the information on the contact page or send an email to email@example.com. Nationwide GIS Data and Maps Data.gov is the GIS data […]