3.3 Linking Database
It means that after the database is created with all the details regarding the graphic objects, a connection should be established between the database and the graphic file. There is one option in MAP calLED Link Path Name (LPN) to establish the relation between the database and graphic file. The link path name consists of the name and location of database file and establishes the connections as and when the graphic data file is opened. The next step in linking database is to establish the connections between the objects in graphic data file and the information contained in database. This is done by selecting a record in the data sheet and attaching it to the corresponding graphic object.
3.4 Minimum Path Tracing
Minimum paths between zones based on selected criteria are required for estimation of travel demand and obtaining the link volumes. The MAP software does not have any utilities to trace the minimum path along the links of the road network. A program was written in 'C' based on Moore's algorithm was used to obtain the minimum paths between the zones based on distance as the criteria.
3.5 Traffic Volumes on Selected Links
Another input required for estimation of travel demand through indirect approaches is traffic volumes on selected links. Traffic volumes on 23 selected links were obtained by manual methods.
4.0 Estimation of O-D Matrix
The knowledge about the travel pattern
