M.Sc. Student, Dept. of GIS Eng.
K.N.Toosi University of Technology
Tehran, Iran
Email: [email protected]
Ali A. Alesheikh
Assistant Professor, Dept. of Geodesy and Geomatics Eng.,
K.N.Toosi University of Technology
Email: [email protected]
Mohsen Oojaghloo
M.Sc. Student, Dept. of Urban Planning.,
K.N.Toosi University of Technology
Email: [email protected]
Reza Meshghini
M.Sc. Student, Dept. of Urban Planning.,
K.N.Toosi University of Technology
Email: [email protected]
Reza Akbari
M.Sc. Student, Dept. of Urban Planning.,
K.N.Toosi University of Technology
Email: [email protected]
Abstract
With the rapid development in GIS and its applications, more and more geospatial data bases have been developed by different programs and applications, but data sharing and acquisition is still a big challenge for the development of GIS application. It is not that data are not available. There is a huge amount of geographic data stored in different places but in different formats, so the aim of data reuse for new applications and data sharing gets limited with the very thought of dealing with heterogeneity among existing systems in terms of data modeling concepts, data encoding techniques and storage structures, etc. The situation is even worse in a large country like Iran. There is huge amount of spatial data but stored in heterogeneous forms. This diversity in data storage can be seen in government departments also. There are no standards or specifications for storing or exchanging different data. Some organizations are changing the Microstation's DGN format to ESRI's shapefile such as NCC, but it dose not solves the problem of interoperability at the global level. So there should be some format for data exchange above all the national level efforts for interoperability. The main objectives of this project are to solve the problem of data heterogeneity and share geospatial data among heterogeneous hardware and software by definition a national geospatial data transfer standard.
These items can be achieved by having a national geospatial data transfer standard:
- Producing a cross table to assess collected geospatial data transfer standards
- Preparing a suitable condition to qualify geospatial data
- Merging of geospatial data
- Reducing the duplications and the cost and time of data production
- Specifying the relationship between geospatial data and their applications
- Designing a user-friendly software to convert geospatial data in an interested format Key words: GIS, XML, GML, ISO, OGC.
