Browsing by Subject "SDI"

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Access status: Open Access ,
Challenges and issues in Spatial Data Infrastructure (SDI) development in Iraq
(Wydawnictwa AGH, 2023) Al-Bakri, Maythm; Fairbairn, David
This paper addresses the nature of Spatial Data Infrastructure (SDI), considered as one of the most important concepts to ensure effective functioning in a modern society. It comprises a set of continually developing methods and procedures providing the geospatial base supporting a country’s governmental, environmental, economic, and social activities. In general, the SDI framework consists of the integration of various elements including standards, policies, networks, data, and end users and application areas. The transformation of previously paper-based map data into a digital format, the emergence of GIS, and the Internet and a host of online applications (e.g., environmental impact analysis, navigation, applications of VGI data, governmental efficiency drives) have led to huge leaps forward in SDI development. However, SDI progress can be held back by numerous challenges, both technical and non-technical. The paper outlines these challenges from the perspective of the country of Iraq, where there is an absence of a clear direction towards efficient SDI operation and a lack of knowledge for establishing and managing effective SDI. These challenges could be met by considering and resolving generic issues, identified by the experiences of other nations, by researchers, and by organisations. These issues are investigated and assessed by means of a questionnaire survey and interviews, directed towards important participants in the field of SDI development in the country. The results present the SDI issues in order of relevance to assist developers and users in solving potential SDI and data integration problems within Iraq.
Access status: Open Access ,
The proposal of realization the OGC geospatial web services' symbolization
(2011) Olejarz, Grzegorz
In the mining industry there is a lack of good standards of creating the mining maps. Such documents are usually issued by non-free software for commercial purposes. Main aim of this article is to analyze the possibilities free and open standards for style spatial data, in according to Polish law and norms. Achieving this goal was possible because of system using Web Services, also based on open software and standards. This article presents installation and configuration of a geospatial service system based on free and open source software: GeoServer, PostGIS and OpenLayers. The sample vector mine data were converted and saved in the spatial database PostGIS and then they were published by using geodata server GeoServer as Web Map Service. Next there were created the portrayal styles of the mining maps elements. The main aim was the adaptation to Polish PKN norms: Mapy górnicze. Umowne znaki granic (Mining maps. Conventional symbols of borders) and Umowne znaki podziemnych wyrobisk górniczych (Conventional symbols of underground excavations). For these styles there were used SLD and SVG OGC standards. Last step was connected with creation of geospatial web services client using OpenLayers. It allowed to display maps just in web browser.
Access status: Open Access ,
Updating, integration and making available spatial data with the use of the state-of-the-art technologies
(2013) Michałowska, Krystyna; Głowienka-Mikrut, Ewa; Mikrut, Sławomir; Bochenek, Mateusz
This paper presents possibilities for the utilization of spatial information derived from various sources (GPS field measurements, map scanning, data resources in centres for land survey and cartography documentation, orthophotomaps, WMS and WFS data, map Websites). It also draws attention to potential problems encountered in the process of data integration with the use of state-of-the-art processing technologies and making available geographical information. The authors also introduce the issue of the quality of processed data in the aspect of their accuracy and reliability, and the possibility of their incorporating into Spatial Data Infrastructure (SDI) resources.