what is GPS

A decade ago not many civilians had heard of a GPS, let alone seen or used one. Prior to the year 2000, Global Positioning Systems (GPS) and their receivers were expensive and largely limited in use to the military, government agencies, and specialized professions. Now, GPS receivers are commonplace […]

GPS Resources

November 12, 2011By Caitlin DempseyGPS

Global Positioning System (GPS) is a technology that uses the position of satellites to determine locations on earth. GPS is an essential tool for GIS because it allows for the gathering of data that locationwise is highly accurate. What is GPS? Rachel Quist explores Global Positioning Systems, its origins, how […]

How to Make a Tile Grip Map Using Google Sheets

This tutorial provides instructions on how to create a tile grid map using Google Sheets.

Latest TIGER GIS Data Released

An acronym for Topologically Integrated Geographic Encoding and Referencing system (TIGER) data, the annual release of GIS data contains public domain data covering administrative and physical features such as roads, boundaries, and hydrological features.

Elements of a Map

Maps are the primary tools by which spatial relationships are visualized. Maps therefore become important documents. There are several key elements that should be included each time a map is created in order to aid the viewer in understanding the communications of that map and to document the source of […]

Learn GIS for Free

There are a few online options to learn GIS for free. Take advantage of resources that provide you access to free courses from some of the world’s best universities and institutions.