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Wiki.GIS.com - The GIS Encyclopedia

Wiki.GIS.com is an encyclopedia dedicated to geographic information systems (GIS).

This repository incorporates contributions from the GIS community for the benefit of GIS professionals, students, and anyone with an interest in GIS. The wiki contains informative articles about GIS concepts, new technologies, products, people, and organizations.

Anyone who has any knowledge of GIS is more than welcome to create an account and start sharing that information by creating new pages or expanding existing pages.

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Featured Content

Map projection

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A map projection is any orderly system of parallels and meridians on which a map can be drawn.[1] Any mathematical function transforming coordinates from a curved surface to a plane is a projection. Since the Earth is roughly the shape of an oblate spheroid, map projections are necessary for creating maps of the Earth or parts of the Earth that are represented on a plane such as a piece of paper or a computer screen. In their attempt at planar representation of actual map features such as an island or continent on the curved surface of the earth, all map projections necessarily distort some aspects of these features. Depending on the purpose of the map, some distortions are acceptable and others are not; therefore different map projections exist in order to preserve some properties of the spheroid-based features at the expense of other properties. A map projection is an essential component of any modern map, and there are an infinite number of possible map projections. ... more

Exclusive Content

System Design Strategies

System Design Strategies is an exclusive resource for the successful design and deployment for geographic information systems technology. This documentation is provided to share system architecture design methodology and the fundamental principles that contribute to system performance and scalability.

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Event: Esri User Conference
Location: San Diego, CA, USA
Date: 6/27/2016

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GIS Trivia

Test your knowledge of GIS

In classical mechanics, what is the space of possible positions that a physical system may attain, possibly subject to external constraints?

  1. Configuration space
  2. Loop space
  3. Kolmogorov space

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