Abstract
The urban geographic information system includes a wide range of different types of complex data collected from various sources. Objects described vary from industrial to ecological as city itself being tied to environment also affects nature. Preventing pollution and other emergency situations caused by industrial and human activity in general is both topical and burning that is widely recognized so there is need for a comprehensive study of the possibilities to develop geographic information system in order to increase efficiency of city design. The purpose of the article is to develop urban geographic information system that provides a solution to the problem and also helps to reduce city planning costs as a system representing city on different levels and obtaining all the necessary information in one source. Urban geographic information system developed with the latest digital technologies allows to make city planning more flexible to technical, economical, social and other changes. Three-dimensional visualization is one of the up-to-date ways to expand geographic information system functionality and this paper gives information of the subject area: research on nowadays data models and data processing methods was conducted. And on this basis urban geographic information system extended data model including underground infrastructure level was offered and possible approaches to increase efficiency of data processing in it were formed. The three-dimensional model provides a solution for complex underground and overground design with digital technologies on a basis of geographic information system that includes multilevel data organization.
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