Scalable and Mashable Location-Oriented Web Services
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Global-Scale Resource Survey and Performance Monitoring of Public OGC Web Map Services
Article Global-Scale Resource Survey and Performance Monitoring of Public OGC Web Map Services Zhipeng Gui 1,*, Jun Cao 2,3, Xiaojing Liu 2,3, Xiaoqiang Cheng 2,3 and Huayi Wu 2,3,* 1 School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China 2 State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China; [email protected] (J.C.); [email protected] (X.L.); [email protected] (X.C.) 3 Collaborative Innovation Center of Geospatial Technology, Wuhan University, 129 Luoyu Road, Wuhan 430079, China * Correspondence: [email protected] (Z.G.); [email protected] (H.W.); Tel.: +86-027-6877-7167 (Z.G.); +86-027-6877-8311 (H.W.) Academic Editor: Wolfgang Kainz Received: 19 March 2016; Accepted: 26 May 2016; Published: date Abstract: One of the most widely-implemented service standards provided by the Open Geospatial Consortium (OGC) to the user community is the Web Map Service (WMS). WMS is widely employed globally, but there is limited knowledge of the global distribution, adoption status or the service quality of these online WMS resources. To fill this void, we investigated global WMSs resources and performed distributed performance monitoring of these services. This paper explicates a distributed monitoring framework that was used to monitor 46,296 WMSs continuously for over one year and a crawling method to discover these WMSs. We analyzed server locations, provider types, themes, the spatiotemporal coverage of map layers and the service versions for 41,703 valid WMSs. -
Google Earth User Guide
Google Earth User Guide ● Table of Contents Introduction ● Introduction This user guide describes Google Earth Version 4 and later. ❍ Getting to Know Google Welcome to Google Earth! Once you download and install Google Earth, your Earth computer becomes a window to anywhere on the planet, allowing you to view high- ❍ Five Cool, Easy Things resolution aerial and satellite imagery, elevation terrain, road and street labels, You Can Do in Google business listings, and more. See Five Cool, Easy Things You Can Do in Google Earth Earth. ❍ New Features in Version 4.0 ❍ Installing Google Earth Use the following topics to For other topics in this documentation, ❍ System Requirements learn Google Earth basics - see the table of contents (left) or check ❍ Changing Languages navigating the globe, out these important topics: ❍ Additional Support searching, printing, and more: ● Making movies with Google ❍ Selecting a Server Earth ❍ Deactivating Google ● Getting to know Earth Plus, Pro or EC ● Using layers Google Earth ❍ Navigating in Google ● Using places Earth ● New features in Version 4.0 ● Managing search results ■ Using a Mouse ● Navigating in Google ● Measuring distances and areas ■ Using the Earth Navigation Controls ● Drawing paths and polygons ● ■ Finding places and Tilting and Viewing ● Using image overlays Hilly Terrain directions ● Using GPS devices with Google ■ Resetting the ● Marking places on Earth Default View the earth ■ Setting the Start ● Location Showing or hiding points of interest ● Finding Places and ● Directions Tilting and -
A Macro That Creates U.S. Census Tracts Keyhole Markup Language
Paper 2418-2018 A Macro that Creates U.S Census Tracts Keyhole Markup Language Files for Google Map Use Ting Sa, Cincinnati Children’s Hospital Medical Center ABSTRACT This paper introduces a macro that can generate the Keyhole Markup Language (KML) files for U.S. census tracts. The generated KML files can be used directly by Google Maps to add customized census tracts layers with user-defined colors and transparencies. When someone clicks on the census tracts layers in Google Maps, customized information is shown. To use the macro, the user needs to prepare only a simple SAS® input data set and download the related KML files from the U.S. census Bureau. The paper includes all the SAS code for the macro and provides examples that show you how to use the macro as well as how to display the KML files in Google Maps. INTRODUCTION KML file is a file that can be used to put different layers onto the google map, like a point, a line or a polygon area. Also inside the KML file, you can define the styles of the layers, like changing the color and transparency of the layers, adding information to the layers etc. The U.S Census Bureau provides the census tracts KML file for each state. However, it is one file for the whole state, therefore, if the user only wants to select certain census tracts, or the user wants to customize the census tracts with special background color, transparency or customized information, the user can not directly use the KML file from the U.S Census Bureau. -
An Introduction to Google Earth Pro
An Introduction to Google Earth Pro Virginia Tech Geospatial Extension Program By: Katherine Britt Ph.D. Candidate Virginia Tech Department of Forest Resources and Environmental Conservation John McGee Geospatial Extension Specialist Department of Forest Resources and Environmental Conservation Jim Campbell Professor Virginia Tech Department of Geography Google Earth Pro Opening Google Earth Pro and Configuring the Program Window Being by opening Google Earth Pro. Select the Google Earth Pro icon “ ,” or search in the start menu for “Google Earth Pro.” When Google Earth Pro has been opened, you will get this screen. A “Start-Up Tip” window will automatically open when Google Earth Pro starts. These include hints and instructions about many popular features in the program. If you do not want to see this window each time you start the program, you can uncheck the “Show tips at start-up” box and then either click “close” or click the red “X” at the top right of the window (see above). After the “Start-Up Tip” window is closed, you will see a view of the earth, with a “Tour Guide” ribbon at the bottom of the main, map area of the screen. The “Tour Guide” will show you photos that may be of interest in the region you are viewing. You can scroll through them to explore the feature or the surrounding area of what you are interested in. These are often used when creating customized tours or videos in Google Earth Pro. 2 Google Earth Pro You may instead wish to maximize your viewing area in the map window. -
Web Map Tile Services Tiny Tile Server Bachelor Thesis
Web Map Tile Services Tiny Tile Server Bachelor Thesis Department of Computer Science University of Applied Science Rapperswil Spring Term 2013 Author: Carmen Campos Bordons Advisor: Prof. Stefan Keller, HSR Project Partner: Klokan Technologies, Baar External Co-Examiner: Claude Eisenhut, Burgdorf Internal Co-Examiner: Prof. Dr. Andreas Rinkel, HSR Abstract Tiny Tile Server is a Python server that permits the user to display local MBTiles maps on the internet. It extracts the data from the SQLite database where the map information is stored in tables containing all the tiles, UTFGrid and metadata. The tiles are the map images, smaller than the screen for better performance. The UTFGrid is some extra information related with points in the map that appears in an infobox when the user interact with these points. The metadata is the information about the map: name, description, bounds, legend, center, minzoom, maxzoom. Tiny Tile Server shows the tiles composing the map on a website and the UTFGrid data on top of the tiles. It can also be used to show the getCapabilities information from Web Map Tile Service in XML format extracted by the metadata table. Tiny Tile Server supports two protocols to access the tiles: direct access with XYZ tile request to tiles in a directory or to MBTiles database; or Web Map Tile Service from a MBTiles database. The server is a part in a website whose purpose is to show how it works and provide templates for the user who wants to employ it, so he will not need to have programming knowledge in order to use Tiny Tile Server, just to follow a simple installation tutorial. -
European Long-Term Ecosystem and Socio- Ecological Research Infrastructure
European Long-Term Ecosystem and Socio- Ecological Research Infrastructure D3.1 eLTER State of the art and requirements Authors: Alessandro Oggioni (CNR-IREA), Christoph Wohner (EAA), John Watkins (CEH), David Ciar (CEH), Herbert Schentz (EAA), Simone Lanucara (CNR-IREA), Vladan Minić (BSI), Srđan ŠkrBić (BSI), Žarko Bodroški (BSI), Ralf Kunkel (FZ-Juelich), Jurgen Sorg (FZ-Juelich), Tomas Kliment (MK18), Francisco Sanchez (UGR), BarBara Magagna (EAA), Johannes Peterseil (EAA) Lead partner for deliveraBle: CNR Other partners involved: NERC/CEH, EAA, BSI, FZJ, UGR H2020-funded project, GA: 654359, INFRAIA call 2014-2015 Start date of project: 01 June 2015 Duration: 48 months Version of this document: 6 SuBmission date: 27 FeBruary 2017 Dissemination level PU PuBlic X PP Restricted to other programme participants (including the Commission Services) CO Confidential, only for members of the consortium (including the Commission Services) CI Classified, as referred to in Commission Decision 2001/844/EC Document history Date Author Description 20.7.2016 Peterseil, Johannes Generating the document and Basic structure 10.8.2016 Oggioni, Alessandro General things and text aBout OBservation and Spatial data, Semantic harmonisation, LifeWatch, GET-IT and EDI 12.8.2016 Wohner, Christoph Text about DEIMS, Geonetwork and B2Share 6.9.2016 Minić, Vladan Text about GEOSS and INSPIRE 17.1.2017 Kunkel, Ralf Text about TERENO 19.1.2017 Peterseil, Johannes Evaluation of the 19.2.2017 Minić, Vladan Implementation strategy for DIP 1.2.2017 Oggioni, Alessandro -
Map Tiles and Cached Map Services
Stefanakis, E., 2015. Map Tiles and Cached Map Services. GoGeomatics. Magazine of GoGeomatics Canada. December 2015. Map Tiles and Cached Map Services The tiling of large maps is an old practice. Large paper maps have always been divided into a series of map sheets at various scales. With the increasing popularity of web mapping applications and the rapid growth of map data availability, the pre-computation and caching of map image tiles has become a common practice in map servers as they use far fewer server resources than maps rendered on demand. In this way, the time required for the client to display complex and high quality base maps is mainly limited by the bandwidth of its connection with the map server. Google was one of the first major mapping providers to adopt the tiled web maps. Others, like Bing and OpenStreetMap, followed the same practice. GIS software vendors, like Esri and Oracle, provide functionality for map tiling and caching of both vector layers and raster images. They also support single fused and multi-layer tiles. In the former, a group of layers are combined into a single image per tile, while in the later these layers appear in the client as a collection of layers with enabled feature selection and controllable visibility. The creation of map tiles is according to the values of a series of properties. These properties include the shape and size of tiles, numbering of zoom levels, subdivision scheme of a tile to result the tiles in the next zoom level, numbering of individual tiles, and map projection of tiles. -
Cartographic Implications of Vector Tile Technology Ingmar De Beukelaar
Master’s Thesis Cartographic implications of Vector Tile technology Ingmar de Beukelaar September 2017 - March 2018 Final report - February 28th, 2018 Author: Ingmar de Beukelaar Supervisor: Drs. Barend Köbben i Colophon This master’s thesis is commissioned by the Utrecht of University, University of Wa- geningen, University of Twente, and the Delft University of Technology as part of the Geographical Information Management and Applications (GIMA) - Master of Science. Responsible Professor: Prof.dr. Menno-Jan Kraak Supervisor: Drs. Barend Köbben Contact information: Ingmar de Beukelaar [email protected] UU student number: 3940330 ITC student number: s6030858 How to cite this master’s thesis: De Beukelaar, I.T.Y. (2018). Cartographic implications of Vector Tile technology (Unpublished master’s thesis). Geographical Information Management and Applications (GIMA MSc). ii Abstract Cartographic implications of Vector Tile technology by INGMAR DE BEUKELAAR -MARCH 2018 The Web has changed the way maps and geographical information are designed, produced and delivered as web maps by cartographers (Cartwright, Gartner, Meng, & Peterson, 2010). Most maps available on the Web today are based on well-established raster transmission methods. However, rapid technological innovation in web map- ping is driving the need to utilize fast rendering tiles. Vector Tiles seem to be an emerging solution (Antoniou, Morley, & Haklay, 2009). Therefore, the goal of this thesis was to investigate the new opportunities and challenges that Vector Tiles offer for Web Cartographers. Several existing Vector Tile tools and technological solu- tions/workflows on how to implement Vector Tiles in Web Mapping were invento- ried. Afterwards, two different workflows were assessed in terms of cartographic strengths & weaknesses. -
Padrões Ogc Para Modelagem E Implementação De Banco De Dados Geográficos
UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ CURSO SUPERIOR DE TECNOLOGIA EM ANÁLISE E DESENVOLVIMENTO DE SISTEMAS MARCELO FRANZON PADRÕES OGC PARA MODELAGEM E IMPLEMENTAÇÃO DE BANCO DE DADOS GEOGRÁFICOS TRABALHO DE CONCLUSÃO DE CURSO MEDIANEIRA – PR 2013 MARCELO FRANZON PADRÕES OGC PARA MODELAGEM E IMPLEMENTAÇÃO DE BANCO DE DADOS GEOGRÁFICOS Trabalho Diplomação do Curso de Graduação, apresentado à disciplina do Curso Superior de Tecnologia em Análise e Desenvolvimento de Sistemas – CSTADS – da Universidade Tecnológica Federal do Paraná – UTFPR, como registro parcial para obtenção do titulo de tecnólogo. Orientador: Prof. Dr. Claudio Leones Bazzi MEDIANEIRA – PR 2013 Ministério da Educação Universidade Tecnológica Federal do Paraná Gerência de Ensino Coordenação do Curso Superior de Tecnologia em Análise e Desenvolvimento de Sistemas Campus Medianeira TERMO DE APROVAÇÃO PADRÕES OGC PARA MODELAGEM E IMPLEMENTAÇÃO DE BANCO DE DADOS GEOGRÁFICOS Por Marcelo Franzon Este Trabalho de Diplomação (TD) foi apresentado às 16h40min do dia 25 de Março de 2013 como requisito parcial para a obtenção do titulo de tecnólogo no Curso Superior Tecnologia em Analise e Desenvolvimento de Sistemas, da Universidade Tecnológica federal do Paraná, Campus Medianeira. O candidato foi arguido pela Banca Examinadora composta pelos professores abaixo relacionados. Após deliberação, a Banca examinadora considerou o trabalho aprovado. _______________________________ _______________________________ Prof. Dr. Claudio Leones Bazzi Prof. Msc. Fernando Schutz UTFPR – Campus Medianeira UTFPR – Campus Medianeira (Orientador) (Convidado) _______________________________ _______________________________ Prof. Dr. Neylor Michel Prof. Msc. Juliano Rodrigo Lamb UTFPR – Campus Medianeira UTFPR – Campus Medianeira (Convidado) (Responsável pelas atividades de TCC) Eu dedico este Trabalho de Conclusão de curso a minha mãe Marlene de Jesus Alves da Costa por não medir esforços em toda a minha vida desde meu nascimento ate hoje para me tornar essa pessoa que sou. -
OGC Geopackage Plugfest Discussion Paper
Open Geospatial Consortium Submission Date: 2015-05-12 Approval Date: 2015-06-05 Publication Date: 2015-08-19 External identifier of this OGC® document: http://www.opengis.net/doc/DP/1.0/geopackage-plugfest Internal reference number of this OGC® document: OGC 15-012r2 Category: OGC® Discussion Paper Editor: Jeff Yutzler OGC GeoPackage Plugfest Discussion Paper Copyright notice Copyright © 2015 Open Geospatial Consortium To obtain additional rights of use, visit http://www.opengeospatial.org/legal/. Warning This document is not an OGC Standard. This document is an OGC Discussion Paper and is therefore not an official position of the OGC membership. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an OGC Standard. Further, an OGC Discussion Paper should not be referenced as required or mandatory technology in procurements. Document type: OGC® Discussion Paper Document subtype: not applicable Document stage: Approved for public release Document language: English 1 Copyright © 2015 Open Geospatial Consortium License Agreement Permission is hereby granted by the Open Geospatial Consortium, ("Licensor"), free of charge and subject to the terms set forth below, to any person obtaining a copy of this Intellectual Property and any associated documentation, to deal in the Intellectual Property without restriction (except as set forth below), including without limitation the rights to implement, use, copy, modify, merge, publish, distribute, and/or sublicense copies of the Intellectual Property, and to permit persons to whom the Intellectual Property is furnished to do so, provided that all copyright notices on the intellectual property are retained intact and that each person to whom the Intellectual Property is furnished agrees to the terms of this Agreement. -
Investigation of Vector Web Mapping Possibilities
HTML5-based Travel Habit Application: Investigation of Vector Web Mapping Possibilities Camilla Isaksson Master of Science Thesis in Geoinformatics TRITA-GIT EX 13-006 School of Architecture and the Built Environment Royal Institute of Technology (KTH) Stockholm, Sweden June 2013 ABSTRACT The subject of the report is to review and evaluate the potential for vector graphics in web maps. It is hoped that a web mapping only should display vector graphics. Compared to the traditional web mapping approach, that has raster tiles pre-rendered on the server side for each zoom level. The drawback with raster data is that it lacks in information content compared to vector data, which in terms can contribute to a richer user interface. However, vector graphics, in comparison to raster data have a complex data structure and are inefficient to handle such as raster data traditionally is managed. Thanks to new rendering techniques for vector graphics, such as by VML, SVG, but mainly through the canvas element, web maps can be improved since vector graphics can be drawn directly in the client through the browser without the need to generate data on the server side and sent it to the client. By selecting three vector-based mobile mapping libraries that use HTML5, in particular the canvas element, each library is examined and evaluated based on their ability to use vector graphics, both performance-wise, by randomly generating vector data on a map comprising of the world, but also according to a number of usability criteria. Thereafter, a mobile travel habit implementation is developed based on one of the libraries that meets the criteria the best. -
KML (Document Markup Language) I
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trade- marks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals. The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. The small images on the front and back covers (which also appear in the text) are from the following sources: Front cover: Valery Hronusov and Ron Blakey (Chapter 7), Google Earth image (Chapter 8), United States Holocaust Memorial Museum (Chapter 1), Angel Tello (Chapter 3), Pamela Fox (Chapter 1) Back cover: Alaska Volcano Observatory (Chapter 6), Stefan Geens (Chapter 5), Jerome Burg (Chapter 4), Peter Webley (Chapter 7), James Stafford (Chapter 7) The publisher offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales, which may include electronic versions and/or custom covers and content particular to your business, training goals, marketing focus, and branding interests. For more information, please contact: U.S. Corporate and Government Sales (800) 382-3419 [email protected] For sales outside the United States please contact: International Sales [email protected] Visit us on the Web: informit.com/aw Library of Congress Cataloging-in-Publication Data Wernecke, Josie.