| Popis: |
In recent years the implementation of Spatial Data Infrastructures (SDIs) for all levels (government, counties, cities and large companies) has become a very hot and important topic. The European Union Directive 2007/2/EC, Infrastructure for Spatial Information in Europe (INSPIRE), passed by the European Commission, defines a set of specifications for common data formats and services for SDI across Europe. All EU member states will have to transform national geodata to INSPIRE defined standards and make this data available through web services according to reference architecture defined by Open GIS Consortium (OGC), and in-line with ISO/OGC standard. There are a lot of ways to achieve this goal. Typical approach to the establishment of SDI implies the use one of the leading proprietary software such as ESRI, Intergraph or MapInfo. On the other hand, the number of quality free and open source GIS projects (FOSS4G) has grown dramatically over the course of the last decade. Some of them have reached such a development in functionality that can effortlessly replace a well known proprietary GIS programs. Reasonable and effective FOSS components for publishing, mapping, manipulation and editing geospatial information such as Desktop GIS, Server GIS, Spatial Data Management System (SDMS), Web Map Servers (WMS) and tools for Extract, Transfer, Load (ETL) are developed. The intent of this paper is to present some of the known solutions for the establishing SDI based on FOSS components and to show that viable FOSS components can be an alternative to the proprietary, commercial solutions for the implementation of SDIs. |
