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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

Cadastral fabric

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A cadastral fabric (or parcel fabric) is a continuous surface of connected (map) parcels. Parcel polygons are defined by a series of boundary lines that store recorded dimensions as attributes in the lines table. Parcel polygons are also linked to each other by connection lines, for example, connection lines across roads. Because each and every parcel is either linked or connected, a seamless network of connected parcel boundaries, or cadastral fabric, is formed. Parcel lines have endpoints, which are the parcel corners. Parcel corner points are common between adjacent parcel boundaries, establishing connectivity and maintaining topological integrity in the network. In the geodatabase, topology is the arrangement that defines how point, line, and polygon features share coincident geometry. Spatial accuracy in the cadastral fabric is improved and maintained through adjustment by least squares. Control points are processed together with recorded dimensions to derive new, more accurate coordinates for parcel ... 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: GIS forum
Location: Belgrade, Serbia
Date: 6/2/2015

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GIS Trivia

Test your knowledge of GIS

This classical astronomical and surveying instrument, dating from the 3rd century BCE was a sighting tube or, alternatively, a rod with a sight at both ends, attached to a stand.

  1. Dioptra
  2. Quadrant
  3. Alidade

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