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NETWORK ANALYSIS

SIMPLE NETWORK ANALYSIS IN GIS

DORRISKARUGA
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NETWORK ANALYSIS

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  1. NETWORK ANALYSIS

  2. Network analysis in ArcGIS is a powerful tool for solving a variety of network-related problems. • The ArcGIS Network Analyst extension enables users to determine the least-cost paths between multiple origins and destinations. • This extension can address challenges such as identifying the best route across a city, locating the nearest emergency vehicle or facility, defining service areas around specific locations, optimizing the delivery of orders using a fleet of vehicles, and selecting the most suitable facilities to open or close.

  3. Applications of network analysis • Route Optimization Finding the shortest, fastest, or most cost-effective path between two or more locations (e.g., delivery routes, transportation planning). • Service Area Analysis Identifying regions that can be reached within a specific time or distance from a given point (e.g., hospitals, fire stations, or retail centers). • Vehicle Routing Problems (VRP) Planning optimal routes for a fleet of vehicles to serve multiple stops efficiently (e.g., delivery services, garbage collection). • Evacuation Planning Designing evacuation routes for emergency scenarios (e.g., hurricanes, floods, or wildfires).

  4. PROCEDURE FOR OPTIMUM ROUTE ANALYSIS • Add the required datasets; eg roads • On customize, open extensions and activate the network analyst tools

  5. On toolbars, activate the network analysis toolbar

  6. Create a new network dataset • On catalog, Right click on your roads shapefile, • Go to new network dataset

  7. You can change the name if need be • Click next, then next again • Click on connectivity • Ensure end point is checked and click ok

  8. Click next, and next again to open this dialog box

  9. Click next till you get to this dialog box • Click Ok and No on driving directions • Click next and finish • When prompted would you like to build it now click yes and allow it to run.

  10. A prompt on whether to add it to the map will pop, click yes. • Your network will be added.

  11. Create a new route • On the network analyst toolbar, click on new route

  12. Create a new network location to create a starting and ending point • Click on the create network location tool

  13. With the cursor, add two points for starting and ending point

  14. Click on solve to get the shortest distance between the two points. The image on the left shows the shortest route

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