Road network analysis in vector environments on chennai city using gis

The study area is one of the Network analysis in vector environments on Chennai City. Chennai district covers an area of 178.2 km2 located on the Eastern Coastal Plains of India. It is situated on the north-eastern corner of Tamil Nadu along the Coramandel coast, a region bounded by the Bay of Bengal and is surrounded inland by the districts of Tiruvallur and Kanchipuram. The area covered by Survey of India Toposheet No 66 C/4 and 66 D/1 of 1:50,000 scale. It lies between 12°9' and 13°9' of the northern latitude and 80°12' and 80°19' of the eastern longitude at an average altitude of 6 meters above sea level. Its coastline is about 25.60 km (2.5% of the total coastline of Tamil Nadu). Network analysis is used for identifying the most efficient routes or paths for allocation of services. This involves finding the shortest or least-cost manner in which to visit a location or a set of locations in a network. Routes and networks are the interconnected features that are used for transportation and include highways, railways, city streets, rivers and utility systems (electricity, telephone, water, sewage). Networks are an important part of our everyday lives and analysis of these networks improves the movement of people, goods, services and the flow of resources . To find out the shortest path in a complex road network in the aspects of specified impedance To make the service area analysis on the location with roads of study area based on the impedance. To find out the closest facility on the road network. To find out the origin-destination matrix cost for many location from one location on the network dataset.