Abstract | Full Paper | PDF | Printer friendly format

Page 2 of 3
| Previous | Next |

Network Analysis using arcview GIS

• To help the policy makers and traffic managers for Route Optimisation and other network analysis, the Orthophotos (1:3000) were used. The Road network and other features (Banks, Hospitals, Hotels etc.) were manually digitized from the traced map using ArcView3.2 GIS software and fed in the format acceptable to the system. The Coverage was then converted to Arc/Info format and digitization errors were rectified.
• The coverage was projected and transformed. The various transportation attributes like length, name of the road, type etc was fed into the system. Alternate routes are drawn based on the given user conditions and impedance on each links using ArcView3.2 Network Analyst.
• The output such as locating the closest facilities, the Optimum Route between any two points, to build service areas and to find out drive time analysis are derived. Output is presented in the form of maps.

1 Arc View Network Analyst
The Arc View Network Analyst extension enables users to solve a variety of problems using geographic networks (i.e., streets, highways, rivers, pipelines, electric lines, etc.) such as finding the most efficient travel route, generating travel directions, finding the closest facility, or defining service areas based on travel time. Arc View Network Analyst adds an integrated graphical user interface providing access to the network modeling capabilities. The study area selected for the research work is Egmore Zone in Chennai City. The base map is collected and digitised for creating layers of road networks and other accessories. Topology is created between spatial and non-spatial data. Through shortest distance, the traveller is guided with traffic information's. Thus the traffic information will be passed on to the user using GIS technique

2 The most direct path between two points
The Arc View Network Analyst extension enables to solve a variety of problems based on geographic networks (e.g.., streets, highways, rivers, pipelines, utility lines). It solve problems such as finding the most efficient travel route across town, generating travel directions, finding the closest emergency vehicle or service facility to an incident, or defining service areas or sales territories based on travel time.

The direction guideline is given below.
Starting from Graphic pick 1, Turn right onto Poonamalle High Road, Travel on Poonamalle High Road for 34.62 m, Turn right onto Gengu Reddy Street, Travel on Gengu Reddy Street for 316.73 m, Turn left onto Poosala Gangu Reddy Street, Travel on Poosala Gangu Reddy Street for 141.17 m, Travel on for 175.38 m,Turn left onto PCO Road, Travel on PCO Road for 11.87 m, Continue straight onto Vengu Pillai Street, Travel on Vengu Pillai Street for 216.12 m, Turn left onto Halls Road, Travel on Halls Road for 22.71 m, Continue straight onto Gandhi Irwin Road, Travel on Gandhi Irwin Road for 576.70 m, Turn right onto Kennet Lane, Travel on Kennet Lane for 357.75 m, Turn right onto Pantheon Road, Travel on Pantheon Road for 92.75 m, Turn left into Graphic pick 2. Total distance traveled is 1945.79 m

3 The optimum route between many points
Improve the efficiency of the operations by finding the best routes around town or across the country. Delivery locations can be added by interactively pointing at locations, using mapped locations, or even geocoding an address or street intersection on the fly. The Arc View Network Analyst can even reorder the deliveries optimizing their order as needed.

It can find the best routes based on the shortest distance or time between where we are and where we want to go. It can even find the best routes during rush hour and at midnight, by changing what "cost" the network should use to route on. "Cost" refers to how "expensive" it is, typically in terms of time or distance, to travel from one point to another. To solve the problem it need clear directions. The Arc View Network Analyst allows the user to generate detailed directions along the route, providing as-you-need-it solutions for common problems.

4 The closest facility
It eliminates guesswork and locates the closest available resource at a moments notice. Dispatch the closest vehicle to a location, or find the nearest valve in critical situations. Weight the user's decisions on the information that matters most to them: costs, time, and distance. Locate the closest facility(s) by time or distance. The user can even have the Network Analyst report the closest 5 facilities within a 10-minute drive. The Network Analyst will avoid construction and other obstacles as needed as well, providing the best solution for the user.


5 Build Service Areas
To find out what areas and who are the service provider based on the location. It creates a service area around the facility, defined by distance or time. It plans for the future by examining where the "holes" are in existing services. Analyze customer profiles by overlaying planned service areas and census information, showing the areas of potential growth. It also builds travel areas that can be served by the facilities (e.g., in 5, 10, or 15 minutes).

Page 2 of 3
| Previous | Next |