Imagery to the Crowd, Mapgive, and the Cybergis: Open Source Innovation in the Geographic and Humanitarian Domains
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Geo-Text Data and Data-Driven Geospatial Semantics
Geo-Text Data and Data-Driven Geospatial Semantics Yingjie Hu GSDA Lab, Department of Geography, University of Tennessee, Knoxville, TN, 37996, USA Abstract Many datasets nowadays contain links between geographic locations and natural language texts. These links can be geotags, such as geotagged tweets or geotagged Wikipedia pages, in which location coordinates are explicitly attached to texts. These links can also be place mentions, such as those in news articles, travel blogs, or historical archives, in which texts are implicitly connected to the mentioned places. This kind of data is referred to as geo- text data. The availability of large amounts of geo-text data brings both challenges and opportunities. On the one hand, it is challenging to automatically process this kind of data due to the unstructured texts and the complex spatial footprints of some places. On the other hand, geo-text data offers unique research opportunities through the rich information contained in texts and the special links between texts and geography. As a result, geo-text data facilitates various studies especially those in data-driven geospatial semantics. This paper discusses geo-text data and related concepts. With a focus on data-driven research, this paper systematically reviews a large number of studies that have discovered multiple types of knowledge from geo-text data. Based on the literature review, a generalized workflow is extracted and key challenges for future work are discussed. Keywords: geo-text data, spatial analysis, natural language processing, spatial and textual data analysis, data-driven geospatial semantics, spatial data science. 1. Introduction Recent years have witnessed an unprecedented increase in the volume, variety, and veloc- ity of data from different sources (Miller and Goodchild, 2015). -
Web GIS in Practice VI: a Demo Playlist of Geo-Mashups for Public Health Neogeographers Maged N Kamel Boulos*1, Matthew Scotch2, Kei-Hoi Cheung2,3 and David Burden4
International Journal of Health Geographics BioMed Central Editorial Open Access Web GIS in practice VI: a demo playlist of geo-mashups for public health neogeographers Maged N Kamel Boulos*1, Matthew Scotch2, Kei-Hoi Cheung2,3 and David Burden4 Address: 1Faculty of Health and Social Work, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK, 2Center for Medical Informatics, School of Medicine, Yale University, New Haven, CT, USA, 3Departments of Anesthesiology and Genetics, School of Medicine, and Department of Computer Science, Yale University, New Haven, CT, USA and 4Daden Limited, 103 Oxford Rd, Moseley, Birmingham, B13 9SG, UK Email: Maged N Kamel Boulos* - [email protected]; Matthew Scotch - [email protected]; Kei- Hoi Cheung - [email protected]; David Burden - [email protected] * Corresponding author Published: 18 July 2008 Received: 6 July 2008 Accepted: 18 July 2008 International Journal of Health Geographics 2008, 7:38 doi:10.1186/1476-072X-7-38 This article is available from: http://www.ij-healthgeographics.com/content/7/1/38 © 2008 Boulos et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract 'Mashup' was originally used to describe the mixing together of musical tracks to create a new piece of music. The term now refers to Web sites or services that weave data from different sources into a new data source or service. -
GIBS API for Developers
GIBS API for Developers Overview Imagery Layers & Endpoints Layer Naming "Best Available" Layers Projections & Resolution WGS 84 / Lat-lon / Geographic (EPSG:4326) Web Mercator (EPSG:3857) NSIDC Sea Ice Polar Stereographic North (EPSG:3413) Antarctic Polar Stereographic (EPSG:3031) Service Endpoints Imagery API/Services OGC Web Map Tile Service (WMTS) Service Endpoints and GetCapabilities Time Dimension Sample Execution Example Clients Generic XYZ Tile Access OGC Web Map Service (WMS) Service Endpoints and GetCapabilities Time Dimension Sample Execution Geographic Information System (GIS) Client Usage Tiled Web Map Service (TWMS) Service Endpoints Sample Execution Vector Visualization Products Overview Access Vector Metadata Vector Styling Script-level Access via GDAL Bulk Downloading Overview The Global Imagery Browse Services (GIBS) are designed to deliver global, full-resolution satellite imagery to users in a highly responsive manner, enabling interactive exploration of the Earth. To achieve that interactivity, GIBS first ingests imagery from a given NASA data provider on a continuous basis, creates a global mosaic of that imagery, then chops the mosaic into an image tile pyramid (see figure below). By pre-generating these tiles, it relieves the servers of image rescaling and cropping duties, greatly reducing computational overhead and enabling a highly responsive system. This also means that the primary method of imagery retrieval for clients is tile-based. For more background on how tiled web maps work, see the MapBox Developers Guide. An image tile pyramid (from OGC WMTS 1.0.0 specification) While the requests made to GIBS are for individual tiles, users generally work at a higher level and configure a map library, GIS client, or script to determine which tiles to retrieve. -
Crowdsourcing, Citizen Science Or Volunteered Geographic Information? the Current State of Crowdsourced Geographic Information
International Journal of Geo-Information Article Crowdsourcing, Citizen Science or Volunteered Geographic Information? The Current State of Crowdsourced Geographic Information Linda See 1,*, Peter Mooney 2, Giles Foody 3, Lucy Bastin 4, Alexis Comber 5, Jacinto Estima 6, Steffen Fritz 1, Norman Kerle 7, Bin Jiang 8, Mari Laakso 9, Hai-Ying Liu 10, Grega Milˇcinski 11, Matej Nikšiˇc 12, Marco Painho 6, Andrea P˝odör 13, Ana-Maria Olteanu-Raimond 14 and Martin Rutzinger 15 1 International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg A2361, Austria; [email protected] 2 Department of Computer Science, Maynooth University, Maynooth W23 F2H6, Ireland; [email protected] 3 School of Geography, University of Nottingham, Nottingham NG7 2RD, UK; [email protected] 4 School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK; [email protected] 5 School of Geography, University of Leeds, Leeds LS2 9JT, UK; [email protected] 6 NOVA IMS, Universidade Nova de Lisboa (UNL), 1070-312 Lisboa, Portugal; [email protected] (J.E.); [email protected] (M.P.) 7 Department of Earth Systems Analysis, ITC/University of Twente, Enschede 7500 AE, The Netherlands; [email protected] 8 Faculty of Engineering and Sustainable Development, Division of GIScience, University of Gävle, Gävle 80176, Sweden; [email protected] 9 Finnish Geospatial Research Institute, Kirkkonummi 02430, Finland; mari.laakso@nls.fi 10 Norwegian Institute for Air Research (NILU), Kjeller 2027, Norway; [email protected] -
Using Wordpress to Manage Geocontent and Promote Regional Food Products
Farm2.0: Using Wordpress to Manage Geocontent and Promote Regional Food Products Amenity Applewhite Farm2.0: Using Wordpress to Manage Geocontent and Promote Regional Food Products Dissertation supervised by Ricardo Quirós PhD Dept. Lenguajes y Sistemas Informaticos Universitat Jaume I, Castellón, Spain Co-supervised by Werner Kuhn, PhD Institute for Geoinformatics Westfälische Wilhelms-Universität, Münster, Germany Miguel Neto, PhD Instituto Superior de Estatística e Gestão da Informação Universidade Nova de Lisboa, Lisbon, Portugal March 2009 Farm2.0: Using Wordpress to Manage Geocontent and Promote Regional Food Products Abstract Recent innovations in geospatial technology have dramatically increased the utility and ubiquity of cartographic interfaces and spatially-referenced content on the web. Capitalizing on these developments, the Farm2.0 system demonstrates an approach to manage user-generated geocontent pertaining to European protected designation of origin (PDO) food products. Wordpress, a popular open-source publishing platform, supplies the framework for a geographic content management system, or GeoCMS, to promote PDO products in the Spanish province of Valencia. The Wordpress platform is modified through a suite of plug-ins and customizations to create an extensible application that could be easily deployed in other regions and administrated cooperatively by distributed regulatory councils. Content, either regional recipes or map locations for vendors and farms, is available for syndication as a GeoRSS feed and aggregated with outside feeds in a dynamic web map. To Dad, Thanks for being 2TUF: MTLI 4 EVA. Acknowledgements Without encouragement from Dr. Emilio Camahort, I never would have had the confidence to ensure my thesis handled the topics I was most passionate about studying - sustainable agriculture and web mapping. -
Curriculum Development and Pedagogy for Teaching Web Mapping
Curriculum Development and Pedagogy for Teaching Web Mapping By Carl M. Lemke Oliver Sack A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Geography) At the UNIVERSITY OF WISCONSIN–MADISON 2018 Date of final oral examination: 7/27/2018 The dissertation is approved by the following members of the Final Oral Committee: Robert E. Roth, Associate Professor, Geography Kristopher N. Olds, Professor, Geography Ian A. Muehlenhaus, Associate Faculty, Geography Leema K. Berland, Associate Professor, Curriculum and Instruction Creative Commons Attribution License Carl M. Lemke Oliver Sack 2018 i Table of Contents Acknowledgements iii List of Figures iv List of Tables v I. Introduction: Teaching Cartography in the 21st Century Abstract 1 1.1 Overview 1 1.2 Changes in Cartographic Practice 3 1.3 Changes in Higher Education 5 1.4 Challenges to GIScience Education 8 1.5 Research Questions and Dissertation Outline 8 II. Background Review Abstract 13 2.1 Web Mapping Definitions and History 13 2.2 Principles of Web Map Design 19 2.3 Approaches to GIScience Education 28 2.4 Why Learning Web Mapping is Unique 34 2.5 GIScience and Online Learning 39 III. Current State of Web Mapping Education: An Interview Study with Educators Abstract 43 3.1 Motivation 43 3.2 Interview and Qualitative Analysis Methods 45 3.3 Qualitative Analysis Results 48 3.3.1 Vision 48 3.3.2 Scope 49 3.3.3 Topic 51 3.3.4 Tool 53 3.3.5 Motivation 56 3.3.6 Pedagogy 58 3.3.7 Challenge 61 3.4 Discussion: Common Practices and Challenges 63 3.5 Conclusion 67 IV. -
Preserving Geospatial Data
Technology Watch Report Preserving Geospatial Data Guy McGarva EDINA, University of Edinburgh Steve Morris North Carolina State University (NCSU) Greg Janée University of California, Santa Barbara (UCSB) DPC Technology Watch Series Report 09-01 May 2009 © 2009 1 Executive Summary: Geospatial data are becoming an increasingly important component in decision making processes and planning efforts across a broad range of industries and information sectors. The amount and variety of data is rapidly increasing and, while much of this data is at risk of being lost or becoming unusable, there is a growing recognition of the importance of being able to access historical geospatial data, now and in the future, in order to be able to examine social, environmental and economic processes and changes that occur over time. The geospatial domain is characterized by a broad range of information types, including geographic information systems data, remote sensing imagery, three- dimensional representations and other location-based information. The scope of this report is limited to two-dimensional geospatial data and data that would typically be considered comparable to paper maps or charts including vector data, raster data and spatial databases. There are a number of significant preservation issues that relate specifically to geospatial data, including: the complexity and variety of data formats and structures; the abundance of content that exists in proprietary formats; the need to maintain the technical and social contexts in which the data exists; and the growing importance of web services and dynamic (and ephemeral) data. Standards for geospatial metadata have been defined at both the national and international levels, yet metadata often becomes dissociated from the data, or is incorrect, non-standard in nature, or not created in the first place. -
Review of Web Mapping: Eras, Trends and Directions
International Journal of Geo-Information Review Review of Web Mapping: Eras, Trends and Directions Bert Veenendaal 1,*, Maria Antonia Brovelli 2 ID and Songnian Li 3 ID 1 Department of Spatial Sciences, Curtin University, GPO Box U1987, Perth 6845, Australia 2 Department of Civil and Environmental Engineering (DICA), Politecnico di Milano, P.zza Leonardo da Vinci 32, 20133 Milan, Italy; [email protected] 3 Department of Civil Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada; [email protected] * Correspondence: [email protected]; Tel.: +618-9266-7701 Received: 28 July 2017; Accepted: 16 October 2017; Published: 21 October 2017 Abstract: Web mapping and the use of geospatial information online have evolved rapidly over the past few decades. Almost everyone in the world uses mapping information, whether or not one realizes it. Almost every mobile phone now has location services and every event and object on the earth has a location. The use of this geospatial location data has expanded rapidly, thanks to the development of the Internet. Huge volumes of geospatial data are available and daily being captured online, and are used in web applications and maps for viewing, analysis, modeling and simulation. This paper reviews the developments of web mapping from the first static online map images to the current highly interactive, multi-sourced web mapping services that have been increasingly moved to cloud computing platforms. The whole environment of web mapping captures the integration and interaction between three components found online, namely, geospatial information, people and functionality. In this paper, the trends and interactions among these components are identified and reviewed in relation to the technology developments. -
Volunteered and Crowdsourced Geographic Information: the Openstreetmap Project
JOURNAL OF SPATIAL INFORMATION SCIENCE Number 20 (2020), pp. 65–70 doi:10.5311/JOSIS.2020.20.659 INVITED ARTICLE Volunteered and crowdsourced geographic information: the OpenStreetMap project Michela Bertolotto1, Gavin McArdle1, and Bianca Schoen-Phelan2 1School of Computer Science, University College Dublin 2School of Computer Science, Technological University Dublin Received: February 28, 2020; accepted: May 12, 2020 Abstract: Advancements in technology over the last two decades have changed how spa- tial data are created and used. In particular, in the last decade, volunteered geographic information (VGI), i.e., the crowdsourcing of geographic information, has revolutionized the spatial domain by shifting the map-making process from the hands of experts to those of any willing contributor. Started in 2004, OpenStreetMap (OSM) is the pinnacle of VGI due to the large number of volunteers involved and the volume of spatial data generated. While the original objective of OSM was to create a free map of the world, its uses have shown how the potential of such an initiative goes well beyond map-making: ranging from projects such as the Humanitarian OpenStreetMap (HOT) project, that understands itself as a bridge between the OSM community and humanitarian responders, to collaborative projects such as Mapillary, where citizens take street-level images and the system aims to automate mapping. A common trend among these projects using OSM is the fact that the community dynamic tends to create spin-off projects. Currently, we see a drive towards projects that support sustainability goals using OSM. We discuss some such applications and highlight challenges posed by this new paradigm. -
How Good Is Openstreetmap Information
Haklay, M., 2008, Please note that this is an early version of this article, and that the definitive, peer- reviewed and edited version of this article is published in Environment and Planning B: Planning and Design. Please refer to the publication website for the definitive version. How good is Volunteered Geographical Information? A comparative study of OpenStreetMap and Ordnance Survey datasets Abstract Within the framework of Web Mapping 2.0 applications, the most striking example of a geographical application is the OpenStreetMap project. OpenStreetMap aims to create a free digital map of the world and is implemented through the engagement of participants in a mode similar to software development in Open Source projects. The information is collected by many participants, collated on a central database and distributed in multiple digital formats through the World Wide Web (Web). This type of information was termed ‘Volunteered Geographical Information’ (VGI) by Mike Goodchild (2007). However, to date there has been no systematic analysis of the quality of VGI. This paper aims to fill this gap by analysing OpenStreetMap information. The examination starts with the characteristics of OpenStreetMap contributors, followed by analysis of its quality through a comparison with Ordnance Survey datasets. The analysis focuses on London and England, since OpenStreetMap started in London in August 2004 and therefore the study of these geographies provides the best understanding of the achievements and difficulties of VGI. The analysis shows that OpenStreetMap information can be fairly accurate: on average within about 6 metres of the position recorded by the Ordnance Survey, and with approximately 80% overlap of motorway objects between the two datasets. -
Sample Dissertation Format
An Interactive Widget to Visualise the Allergy Symptoms of a Country A dissertation submitted to the University of Manchester for the degree of Master of Science in the Faculty of Engineering and Physical Sciences Deemah Alqahtani 2016 School of Computer Science Table of Contents Table of Contents ........................................................................................................... 2 List of Figures ................................................................................................................ 5 List of Tables ................................................................................................................. 8 Glossary of Terms .......................................................................................................... 9 Abstract ........................................................................................................................ 10 Declaration................................................................................................................... 11 Intellectual Property Statement ................................................................................... 12 Acknowledgement ....................................................................................................... 13 1 Introduction ........................................................................................................ 14 1.1 Aims and Objectives ................................................................................... 15 1.2 Report Structure ......................................................................................... -
Design of a Multiscale Base Map for a Tiled Web Map
DESIGN OF A MULTI- SCALE BASE MAP FOR A TILED WEB MAP SERVICE TARAS DUBRAVA September, 2017 SUPERVISORS: Drs. Knippers, Richard A., University of Twente, ITC Prof. Dr.-Ing. Burghardt, Dirk, TU Dresden DESIGN OF A MULTI- SCALE BASE MAP FOR A TILED WEB MAP SERVICE TARAS DUBRAVA Enschede, Netherlands, September, 2017 Thesis submitted to the Faculty of Geo-Information Science and Earth Observation of the University of Twente in partial fulfilment of the requirements for the degree of Master of Science in Geo-information Science and Earth Observation. Specialization: Cartography THESIS ASSESSMENT BOARD: Prof. Dr. Kraak, Menno-Jan, University of Twente, ITC Drs. Knippers, Richard A., University of Twente, ITC Prof. Dr.-Ing. Burghardt, Dirk, TU Dresden i Declaration of Originality I, Taras DUBRAVA, hereby declare that submitted thesis named “Design of a multi-scale base map for a tiled web map service” is a result of my original research. I also certify that I have used no other sources except the declared by citations and materials, including from the Internet, that have been clearly acknowledged as references. This M.Sc. thesis has not been previously published and was not presented to another assessment board. (Place, Date) (Signature) ii Acknowledgement It would not have been possible to write this master‘s thesis and accomplish my research work without the help of numerous people and institutions. Using this opportunity, I would like to express my gratitude to everyone who supported me throughout the master thesis completion. My colossal and immense thanks are firstly going to my thesis supervisor, Drs. Richard Knippers, for his guidance, patience, support, critics, feedback, and trust.