Spatial Data repository - to store data, e.g., a spatial database
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Software client - to Display, Query, and Analyse spatial data (this could be a browser or a desktop GIS)īrowser based application developed using OSS
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GIS software (Thick client or desktop) - to create, update and process spatial dataĪrcGIS Desktop Properatory Softwere 6 Licences Hence, the basic software components of an SDI are: SDI Component As mentioned earlier it is often wished that the data provider is able to update spatial data stored in a repository. It is proposed to establish a Digital Maps Repository which would serve the above mentioned purpose.Ī SDI should enable the discovery and delivery of spatial data from a data repository, via a spatial service provider, to a user.
Geographical Information is required to take departmental decisions in various Government Departments in providing services to the citizens. This will set uniform GIS platform our State. Hence, the the Project, Tamil Nadu Geographic Information System is conceived with an ultimate objective to create generic model of GIS and to easily integrate with available data sets. The other constraint in data usage is updation of data overtime, use of appropriate tools (proprietary versus open tools) in managing the data source. One more issue is the source data variation that leads to Spatial / locational inaccuracy of information and mismatch data. Different agencies are developing GIS on different platform leading to inability to scale up and is also not cost effective. The basic issue in these projects are to utilize huge volume of existing data sets for decision making process. In Tamil Nadu, a vast spatial data have been generated through GIS Projects undertaken by several Projects. The Geographical Information System (GIS) is a tool for managing, analyzing, decision making by seamlessly combining both spatial and non-spatial data. Tamilnadu Water Supply and Drainage Department (TWAD) Tamilnadu Generation and Distribution Corporation (TANGEDCO) State Industrial Promotion Corporation of Tamilnadu (SIPCOT) Municipal Administration and Water Supply Department (MAWS) Integrated Child Development Services (ICDS) It is expected that during the first phase, there would be requirements for orientation / awareness / workshops on data preparation (spatial and non spatial) for the departments, awareness among user departments (who are not using Geographical Information System currently), capacity building on open source tools, etc., and to impart 'Train the Trainers' Programs during end phase I and beginning of Phase II in districts, so that the trained personnel could impart further training to more number of officials from their respective departments Training Programme could be conducted at Chennai as well as in some of the District Headquarters depending on the requirement.Ĭhennai Metropolitan Development AuthorityĬommisonarate of Municipal AdministrationĬommissionerate of Survey and Settlement (COSS)
The handholding support meant for districts shall work in coordination with the state Tamil Nadu Geographical Information System technical team.
The spatial data sets of different application proposed to be developed will initially use the Survey of India base maps at 1:50,000 scale as the reference for the entire State. Additional layers for various departments and spatial layers at larger scales for urban application could be made. It is proposed to establish a Digital Maps Repository which would serve these purposesĪugmenting the efforts made in the 1st phase, the Geographical Information System would enhance its repository with other department specific applications.
Geographical Information is necessary to take decisions in various Government Departments as well as providing services to the citizens. This will provide an uniform GIS platform over the State. Hence, the Project, Tamil Nadu Geographical Information System (TNGIS) is conceived with an ultimate objective to create a generic model of GIS and to easily integrate with other available data sets. The other constraint in data usage is updation of data overtime, use of appropriate tools (proprietary versus open source software tools) in managing the data sets. One more issue is the source data variation that leads to Spatial / locational inaccuracy of information and mismatch in data. In Tamil Nadu, a vast spatial data have been generated through GIS Projects undertaken by several Departments. The Geographical Information System (GIS) is a tool for managing, analysing, decision making by seamlessly combining both spatial and non-spatial data.
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