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Limited By:	Subject = Geospatial Data;

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Displaying Results 1 - 7 of 7 on page 1 of 1

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Assessing the quality of geospatial linked data – experiences from Ordnance Survey Ireland (OSi) (2018)

Debattista, Jeremy; Clinton, Eamon; Brennan, Rob

Assessing the quality of geospatial linked data – experiences from Ordnance Survey Ireland (OSi) (2018)

Debattista, Jeremy; Clinton, Eamon; Brennan, Rob

Abstract:

Ordnance Survey Ireland (OSi) is Ireland’s national mapping agency that is responsible for the digitisation of the island’s infrastructure in terms of mapping. Generating data from various sensors (e.g. spatial sensors), OSi build its knowledge in the Prime2 framework, a subset of which is transformed into geo-Linked Data. In this paper we discuss how the quality of the generated sematic data fares against datasets in the LOD cloud. We set up Luzzu, a scalable Linked Data quality assessment framework, in the OSi pipeline to continuously assess produced data in order to tackle any quality problems prior to publishing.

http://doras.dcu.ie/22977/

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Combining Geovisual Analytics with Spatial Statistics: the Example of Geographically Weighted Regression (2008)

Demšar, Urška; Fotheringham, Stewart; Charlton, Martin

Combining Geovisual Analytics with Spatial Statistics: the Example of Geographically Weighted Regression (2008)

Demšar, Urška; Fotheringham, Stewart; Charlton, Martin

Abstract:

An attempt is made to facilitate interpretation of the results of a spatial statistical method – Geographically Weighted Regression (GWR) – using a geovisual exploratory approach. The GWR parameter space is treated as a multivariate dataset and explored in a geovisual exploratory environment with the goal to identify spatial and multivariate patterns that describe the spatial variability of the parameters and underlying spatial processes.

http://mural.maynoothuniversity.ie/5777/

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Geospatial Data Preservation Prime (2013)

Lauriault, Tracey P.; Hackett, Yvette; Kennedy, Ed

Geospatial Data Preservation Prime (2013)

Lauriault, Tracey P.; Hackett, Yvette; Kennedy, Ed

Abstract:

This primer is one in a series of Operational Policy documents being developed by GeoConnections. It is intended to inform Canadian Geospatial Data Infrastructure (CGDI) stakeholders about the nature and scope of digital geospatial data archiving and preservation and the realities, challenges and good practices of related operational policies. Burgeoning growth of online geospatial applications and the deluge of data, combined with the growing complexity of archiving and preserving digital data, has revealed a significant gap in the operational policy coverage for the Canadian geospatial data infrastructure (CGDI). Currently there is no commonly accepted guidance for CGDI stakeholders wishing or mandated to preserve their geospatial data assets for long-term access and use. More specifically, there is little or no guidance available to inform operational policy decisions on how to manage, preserve and provide access to a digital geospatial data collection. The preservation of geosp...

http://mural.maynoothuniversity.ie/5685/

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How little is enough? Evaluation of user satisfaction with maps generated by a progressive transmission scheme for geospatial data (2011)

Ying, Fangli; Corcoran, Padraig; Mooney, Peter; Winstanley, Adam C.

How little is enough? Evaluation of user satisfaction with maps generated by a progressive transmission scheme for geospatial data (2011)

Ying, Fangli; Corcoran, Padraig; Mooney, Peter; Winstanley, Adam C.

Abstract:

Progressively transmission of vector data represents a promising means of delivering large amounts of geospatial data to mobile device users who are constrained by: small screen size, limited bandwidth, and limited device storage. A progressive transmission strategy works for a given spatial dataset by computing a series of level of maps at increasing detail. The theoretical approach of progressive transmission is to send every progressive level of the map. However, some users depending on their requirements may be satisfied with one of the intermediate level detail maps. This will result in a resource saving to the user in terms of both download waiting time and bandwidth. This paper discusses user trails to quantify user satisfaction with the output of this progressive transmission scheme, which is based on overall shape complexity of the geographical features in the map. Initial results indicate a significant relationship between Levels of Detail (LOD) and usability of the corres...

http://mural.maynoothuniversity.ie/4974/

Marked Mark

Representations of Environmental Data in Web-based GIS (2009)

Mooney, Peter; Winstanley, Adam C.

Representations of Environmental Data in Web-based GIS (2009)

Mooney, Peter; Winstanley, Adam C.

Abstract:

The GIS community is using the vast potential of the Internet to disseminate geospatial information. Web-based GIS software and services are key components in distribution of geospatial data. Web-based GIS provide government departments, local authorities and environmental agencies with unprecedented opportunities to offer online access to their environmental information and related services for citizens. Web-based GIS offers access to information services 24 hours a day, 7 days a week, 365 days a year. In order for web-GIS to be successful in delivering environmental information the representation of the input datasets and output delivery formats/structures must be suitable to both the Internet delivery medium and the intended audience. In the majority of cases this will involve conversion and re-modelling of existing data resources. This paper discusses representations of environmental data for delivery and dissemination using web-based GIS in order to serve a variety of stakehold...

http://mural.maynoothuniversity.ie/2913/

Marked Mark

Selective progressive transmission of vector data (2011)

Ying, Fangli; Mooney, Peter; Corcoran, Padraig; Winstanley, Adam C.

Selective progressive transmission of vector data (2011)

Ying, Fangli; Mooney, Peter; Corcoran, Padraig; Winstanley, Adam C.

Abstract:

Delivering raw geospatial data to mobile devices is an interesting and challenging computational and user-interface problem. Geospatial data can be rendered in real-time on the mobile device using appropriate visualisation software running on the mobile device operating system. Currently the majority of approaches in delivering geospatial data to mobile devices provide pre-rendered maps (tiles, images). While tile-based approaches have evolved into a defacto standard we feel there are a number of advantages in delivering geospatial data in raw vector formats (XML, GML, Shapefile, etc) to mobile devices including: User personalisation: User can choose which geographical features are displayed, change map themes, set visualisation preferences, etc. Timeliness: The user is always provided with the most up-to-date and recent versions of the spatial data. A number of contraints imposed by the mobile device environment provide major challenges including: screen resolution, available netwo...

http://mural.maynoothuniversity.ie/4977/

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TA 2: Final Report: Geospatial Data Archiving and Preservation (2011)

Lauriault, Tracey P.; Kennedy, Ed

TA 2: Final Report: Geospatial Data Archiving and Preservation (2011)

Lauriault, Tracey P.; Kennedy, Ed

Abstract:

This report is written to meet the following objective: conduct research and provide analysis and recommendations on issue of archiving and preserving CGDI’s geospatial data assets, including solutions for perpetual access. The report is based primarily on research of available documents and literature, supplemented by consultations with a primary stakeholder, Library and Archives Canada (LAC). The report is structured in nine chapters, including this introduction. The second chapter provides a synopsis and analysis of some of the more significant legislative requirements for the archiving and preservation of Canada’s geospatial data. The third chapter reports on the consultation with Library and Archives Canada concerning their guidelines and best practices that might be used across government. Chapter 4 assesses geospatial considerations in Canada’s current information management policy, highlighting key Treasury Board policies and directives. The fifth and sixth chapters report t...

http://mural.maynoothuniversity.ie/5686/

Displaying Results 1 - 7 of 7 on page 1 of 1