Father of GIS

Spatial Analysis

Roger Tomlinson. Archival Photograph from the Tomlinson Collection, Geography and Map Division, Library of Congress.

Who is the Father of GIS?

December 17, 2015By Caitlin DempseySpatial Analysis

Roger Tomlinson coined the term “geographic information systems” and it’s his contributions to geographic information systems (GIS) that earned him the nickname, “Father of GIS”.

John Snow's 1854 Cholera Map.

History of GIS

May 14, 2012By Caitlin DempseyGIS Industry

From the early days in Canada to the high tech world of internet mapping, the field of GIS is older than you may think.

Elements of a Map

Map elements such as the map frame, legend, and north arrow are parts of what create a map.

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.

Open Source GIS and Freeware GIS Applications

An open source application by definition is software that you can freely access and modify the source code for. Open source projects typically are worked on by a community of volunteer programmers. Open source GIS programs are based on different base programming languages. Three main groups of open source GIS […]

What is GIS?

GIS is a technological field that incorporates geographical features with tabular data in order to map, analyze, and assess real-world problems. The key word to this technology is Geography – this means that some portion of the data is spatial.

Calculating Polygon Area in ArcMap

Here are the steps for calculating the area of a polygon using ArcGIS.