View
223
Download
1
Category
Preview:
Citation preview
GIS-T APPLICATIONS
Introduction to GIS-T
Technological and conceptual developments led to the rise of Transportation-GIS (GIS-T) during 1980’s
GIS has got wide applications in transportation field
GIS packages like TransCAD and EMME are developed specifically for GIS-T
GIS and transportation Four major components of GIS which has specific
considerations for transportation are :
Encoding Management
Analysis Reporting
Encoding - Deals with issues concerning the representation of a transport system and its spatial components
Management - The encoded information is stored in a GIS database management system so that it can be organised
Analysis - Considers the wide array of tools and methodologies available for transport issues
Reporting - A GIS would not be complete without all its visualization and data reporting capabilities for both spatial and non-spatial data
GIS and transportation Contd.
Representation of a transportation system and components of GIS-T
GIS-T capabilities and applications
General GIS operations
Matrix operation
Modeling procedures
Data editing
Display
Buffering
Spatial search
Conditional query
General GIS operations
Data is stored in the form of matrix
Both rows and columns represent the same set of geographical features, either points such as cities or areas such as traffic analysis zones
Rows are usually regarded as the origins and the columns the destinations
It is called matrix view in GIS-T
Matrix operation
Typical Matrix (City Distance) Constructed using GIS
Topologically Integrated Geographic Encoding and Referencing (TIGER)
Shortest Path Analysis (SPA)
Vehicle (VRo) & Arc Routing (AR)
Spatial Interaction and Gravity Models
The Urban Transportation Systems Planning (UTSP)
GIS in Land Use Modeling
Freight Modeling
Public Policy Making
Modeling procedures
TransCAD
Mapinfo
EMME
Arc View
Geomedia
ESRI
Softwares for GIS-T
Developed by Caliper Corporation
First and only Geographic Information System (GIS) designed for use by transportation professionals
Used to store, display, manage, and analyze transportation data
TransCAD combines GIS and transportation modeling capabilities in a single integrated platform
TransCAD
Can be used for all modes of transportation, at any scale or level of detail
Can create high-quality map output using many of thematic mapping styles and options, unlimited colors, and fully-scalable line styles and true type map symbols
Provides specialized mapping functions for transportation applications
Includes sophisticated GIS features such as polygon overlay, buffering, and geocoding
TransCAD Contd.
It has an open system architecture that supports data sharing on local and wide-area networks
TransCAD is the only software package that fully integrates GIS with demand modeling and logistics functionality
Advantages :
Accurate, Efficient modeling process, brings new and much-needed capabilities for measuring geographic accessibility, provides a graphical solution that is easily understood
TransCAD Contd.
Provides location intelligence solutions through combining software, data (both spatial and non spatial) and consultancy with project management, systems design and development, training and support
Produces a wide range of software including Spatial Cartridges for databases (Spatial Ware), Routing, Geocoding (Mapmaker), Site Analysis, Risk Analysis, Market Analysis, and the Envies web services suite
Mapinfo
THANK YOU
Recommended