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such as the shortest path between two points on the network, as is commonly done in the calculation of driving directions. Networks can also be used to perform spatial analysis to determine points or edges that are encompassed in a certain area or within a certain distance of a specified point. This has applications in
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points. These edges can have weights or flow direction assigned to them, which dictate certain properties of these edges that affect analysis results . In the case of certain types of networks, source points (points where flow originates) and sink points (points where flow terminates) may also exist.
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Networks define the interconnectedness of features. Through analyzing this connectivity, paths from one point to another on the network can be traced and calculated. Through optimization algorithms and utilizing network weights and flow, these paths can also be optimized to show specialized paths,
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In the case of utility networks, a source point may correlate with an electric substation or a water pumping station, and a sink point may correlate with a service connection at a residential household.
40:. Geometric networks are often used to model road networks and public utility networks (such as electric, gas, and water utilities). Geometric networks are called in recent years very often
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that are connected. Connectivity rules for the network specify which edges are connected and at what points they are connected, commonly referred to as
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to model a series of interconnected features. A geometric network is similar to a
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116:: for modeling water distribution flow and natural gas distribution
100:: for site suitability studies, and traffic and congestion studies.
173:"ArcGIS Network Analyst: Networks and Network Models"
206:Empowering Electric and Gas Utilities with GIS
158:Empowering Electric and Gas Utilities with GIS
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221:Algorithms for Networks and Graphs, Volume 1
110:in GIS, tracing from a generation source
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52:A geometric network is composed of
48:Composition of a Geometric Network
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241:Geographic information systems
137:Geographic Information Systems
22:geographic information systems
20:is an object commonly used in
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219:Evans, James Robert (1992).
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178:. ESRI Inc. Archived from
106:Industry: for modeling an
114:Other Public Utilities
82:, among other fields.
223:. Marcel Dekker, Inc.
204:Meehan, Bill (2007).
156:Meehan, Bill (2007).
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143:References
76:hydrology
69:Functions
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189:22 April
121:See also
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208:. ESRI.
160:. ESRI.
92:Routing
127:Graphs
183:(PDF)
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191:2011
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