Buffer analysis
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A buffer in geographic information system (GIS) is a zone around a geographic feature containing locations that are within a specified distance of the feature. A buffer is likely the most commonly used tool within the proximity analysis class of spatial analysis methods.[1]
A buffer is an area defined by the bounding region determined by a set of points at a specified maximum distance from all nodes along segments of an object.
See also
- Dilation (morphology) (positive buffer)
- Erosion (morphology) (negative buffer)
External links
- OGC ST_Buffer function (PostGIS implementation)
References
- ^ Wade, T. and Smmer, S. eds. A to Z GIS
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