Spatial Analysis in GIS

Geographic information systems uses spatial analysis in order to understand geographic questions.

This list is a work in progress.  If you would like to submit an article or GIS tutorial covering a theme in spatial analysis, visit the submissions page for guidelines.

Area Cartograms

Area cartogram maps are maps of non-absolute space where the areal extent is in proportion to some measured value.  More: Area Cartograms Explored.

Buffering

Buffering in GIS creates a polygon layer that extends out or in from a set distance from a point, line, or polygon.  More: Buffers

Clip Analysis

Clip analysis is the function of using the extent of one geographic layer to clip the extent of another geographic layer.  More: Clip Analysis using ArcGIS Desktop.

Distance Decay

Distance decay is a phenomenon observed between locations or ethnic groups- the further apart they are, the less likely it is that they will interact very much. More: Distance Decay.

Geocoding

Geocoding is a way of georeferencing data by using a GIS data layer that has locational information.  More:Geocoding.

Heat Maps

Heat mapping, from a  geographic perspective, is a method of showing the geographic clustering of a phenomenon. More: Heat maps in GIS.

Line of Sight and Visibility Analysis

Light of sight measures the unimpeded view or access from one point to another point across a terrain or surface.  Visibility analysis is the end result, a line color coded to show which segments are visible and which segments have an obstructed view.  More: Light of Sight.

source:http://www.gislounge.com/spatial-analysis-in-gis/

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