British Pathé once provided entertaining news reels as part of the British movie going experience. Over 85,000 news videos representing the entirety of its archives have been uploaded to YouTube. The news reels span 1896 to 1976 and covers a range of news, sports, and entertainment. Included in this collection are […]
In the last section of this series, we took a look at both the ASTER sensor and the vast library of spectral profiles built as a standard reference for multi-spectral analysis and material classification. In this article, we will take a look at land cover investigations through spectral unmixing, which is […]
Water is essential for life on the Earth, and the supply of this precious liquid is constantly being recycled through energy from the sun. This process is known as the hydrologic cycle, and through it water is continuously exchanged between the land, the atmosphere, and the oceans. Precipitation in its […]
ArcMap is a component of Esri’s suite of desktop GIS software programs. Users of ArcGIS use ArcMap primarily to create, edit, analyze, and display geospatial information. Saved ArcMap files have the .mxd extension. This file format is only usable within ArcMap. To share maps created within ArcMap, most cartographers will […]
This article provides an overview of the use of GIS as in public health. It includes a short history of its development as a tool in the field, explains how GIS is used, different data sources and how the privacy of sensitive health information is maintained. Examples of current research using GIS within the public health field are also provided.
Launched on April 3 and reaching operational altitude on April 11, the first images captured by the European Space Agency’s (ESA) Sentinel-1A satellite have been made public. The first of five satellites planned for the Sentinel group, Sentintel-1A will be tasked with gathering all-weather, day and night radar images. Imagery […]
The developers of open source GIS software gvSIG have issued a call for translators. gvSIG is a freely downloadable GIS software package written in Java that is available for Linux, Macintosh, and Windows platforms. gvSIG is available in a multitude of languages: Spanish, English UK, English USA, German, French, Italian, Portuguese, […]
Site selection is a type of GIS analysis that is used to determine the best site for something and fuzzy logic is one site selection method. It assigns membership values to locations that range from 0 to 1 and is commonly used to find ideal habitat for plants and animals. This article examines fuzzy logic and explains how and when to use it.