GIS Dictionary
Definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.
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source
See Also:
sink
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[analysis/geoprocessing]
The location or group of locations used as the starting point for distance analysis. 
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[network analysis]
A junction feature that pushes flow away from itself through the edges of a geometric network. For example, in a water distribution network, pump stations can be modeled as sources, since they drive the water through the pipes away from the pump stations.
