Leveraging Container Technologies in a Giscience Project: a Perspective from Open Reproducible Research
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Pyqgis Developer Cookbook Release 2.18
PyQGIS developer cookbook Release 2.18 QGIS Project April 08, 2019 Contents 1 Introduction 1 1.1 Run Python code when QGIS starts.................................1 1.2 Python Console............................................2 1.3 Python Plugins............................................3 1.4 Python Applications.........................................3 2 Loading Projects 7 3 Loading Layers 9 3.1 Vector Layers.............................................9 3.2 Raster Layers............................................. 11 3.3 Map Layer Registry......................................... 11 4 Using Raster Layers 13 4.1 Layer Details............................................. 13 4.2 Renderer............................................... 13 4.3 Refreshing Layers.......................................... 15 4.4 Query Values............................................. 15 5 Using Vector Layers 17 5.1 Retrieving information about attributes............................... 17 5.2 Selecting features........................................... 18 5.3 Iterating over Vector Layer...................................... 18 5.4 Modifying Vector Layers....................................... 20 5.5 Modifying Vector Layers with an Editing Buffer.......................... 22 5.6 Using Spatial Index......................................... 23 5.7 Writing Vector Layers........................................ 23 5.8 Memory Provider........................................... 24 5.9 Appearance (Symbology) of Vector Layers............................. 26 5.10 Further -
Development of an Extension of Geoserver for Handling 3D Spatial Data Hyung-Gyu Ryoo Pusan National University
Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings Volume 17 Boston, USA Article 6 2017 Development of an extension of GeoServer for handling 3D spatial data Hyung-Gyu Ryoo Pusan National University Soojin Kim Pusan National University Joon-Seok Kim Pusan National University Ki-Joune Li Pusan National University Follow this and additional works at: https://scholarworks.umass.edu/foss4g Part of the Databases and Information Systems Commons Recommended Citation Ryoo, Hyung-Gyu; Kim, Soojin; Kim, Joon-Seok; and Li, Ki-Joune (2017) "Development of an extension of GeoServer for handling 3D spatial data," Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings: Vol. 17 , Article 6. DOI: https://doi.org/10.7275/R5ZK5DV5 Available at: https://scholarworks.umass.edu/foss4g/vol17/iss1/6 This Paper is brought to you for free and open access by ScholarWorks@UMass Amherst. It has been accepted for inclusion in Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings by an authorized editor of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. Development of an extension of GeoServer for handling 3D spatial data Optional Cover Page Acknowledgements This research was supported by a grant (14NSIP-B080144-01) from National Land Space Information Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government and BK21PLUS, Creative Human Resource Development Program for IT Convergence. This paper is available in Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings: https://scholarworks.umass.edu/foss4g/vol17/iss1/6 Development of an extension of GeoServer for handling 3D spatial data Hyung-Gyu Ryooa,∗, Soojin Kima, Joon-Seok Kima, Ki-Joune Lia aDepartment of Computer Science and Engineering, Pusan National University Abstract: Recently, several open source software tools such as CesiumJS and iTowns have been developed for dealing with 3-dimensional spatial data. -
Assessmentof Open Source GIS Software for Water Resources
Assessment of Open Source GIS Software for Water Resources Management in Developing Countries Daoyi Chen, Department of Engineering, University of Liverpool César Carmona-Moreno, EU Joint Research Centre Andrea Leone, Department of Engineering, University of Liverpool Shahriar Shams, Department of Engineering, University of Liverpool EUR 23705 EN - 2008 The mission of the Institute for Environment and Sustainability is to provide scientific-technical support to the European Union’s Policies for the protection and sustainable development of the European and global environment. European Commission Joint Research Centre Institute for Environment and Sustainability Contact information Cesar Carmona-Moreno Address: via fermi, T440, I-21027 ISPRA (VA) ITALY E-mail: [email protected] Tel.: +39 0332 78 9654 Fax: +39 0332 78 9073 http://ies.jrc.ec.europa.eu/ http://www.jrc.ec.europa.eu/ Legal Notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. Europe Direct is a service to help you find answers to your questions about the European Union Freephone number (*): 00 800 6 7 8 9 10 11 (*) Certain mobile telephone operators do not allow access to 00 800 numbers or these calls may be billed. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu/ JRC [49291] EUR 23705 EN ISBN 978-92-79-11229-4 ISSN 1018-5593 DOI 10.2788/71249 Luxembourg: Office for Official Publications of the European Communities © European Communities, 2008 Reproduction is authorised provided the source is acknowledged Printed in Italy Table of Content Introduction............................................................................................................................4 1. -
QGIS Server 3.16 User Guide
QGIS Server 3.16 User Guide QGIS Project Sep 29, 2021 CONTENTS 1 Introduction 1 2 Getting Started 3 2.1 Installation on Debian-based systems ................................. 3 2.1.1 Apache HTTP Server .................................... 4 2.1.2 NGINX HTTP Server .................................... 6 2.1.3 Xvfb ............................................. 10 2.2 Installation on Windows ....................................... 11 2.3 Serve a project ............................................ 14 2.4 Configure your project ........................................ 15 2.4.1 WMS capabilities ...................................... 16 2.4.2 WFS capabilities ...................................... 17 2.4.3 WCS capabilities ...................................... 17 2.4.4 Fine tuning your OWS ................................... 17 2.5 Integration with third parties ..................................... 17 2.5.1 Integration with QGIS Desktop ............................... 17 2.5.2 Integration with MapProxy ................................. 17 2.5.3 Integration with QWC2 ................................... 18 3 Services 19 3.1 Web Map Service (WMS) ...................................... 19 3.1.1 GetMap ........................................... 20 3.1.2 GetFeatureInfo ....................................... 27 3.1.3 GetPrint ........................................... 30 3.1.4 GetLegendGraphics ..................................... 32 3.1.5 GetProjectSettings ...................................... 33 3.2 Web Feature Service (WFS) .................................... -
Introduction to QGIS: Download and Install
Introduction to QGIS: Download and Install University of Colorado Denver Facility for Advanced Spatial Technology [email protected] Annotations Computer Science Crash Cource What is QGIS? Download QGIS is a free and open source Geographic Information System. This To get started with QGIS you will need to download the software means that a user has the ability to create, export and design maps, which matches your system. You will most likely be choosing much in the same way you would using and ArcMap. The upside, as between Windows or Mac, and you will also need to know compared with ESRI products, is that QGIS is free for anyone to whether your system is 64bit ot 32bit. download and use. QGIS can run on Linux, Unix, Mac OSX, Windows and even Android. To follow along with the instructions visit: https://www.qgis.org Why use QGIS? The mian reason someone would want to use QGIS is the fact that it is free and open source. Again, this means that anyone can use it free of charge, and on many different systems. What do I need to get started? This document will show the steps necessary for getting started with QGIS. For basic cartography and map design, almost any computer from the last ten years can run QGIS, which is a large upside compared with beefier programs like ArcMap and ArcPro. That being said a minimum of two cores is highly recommended, as well as about 5GB of free space on your hard drive for the program and files. 2 • facility for advanced spatial technology Annotations Computer Science Crash Cource Step One: Once you have navigated to the QGIS homepage, select the green “Download Now” button. -
The State of Open Source GIS
The State of Open Source GIS Prepared By: Paul Ramsey, Director Refractions Research Inc. Suite 300 – 1207 Douglas Street Victoria, BC, V8W-2E7 [email protected] Phone: (250) 383-3022 Fax: (250) 383-2140 Last Revised: September 15, 2007 TABLE OF CONTENTS 1 SUMMARY ...................................................................................................4 1.1 OPEN SOURCE ........................................................................................... 4 1.2 OPEN SOURCE GIS.................................................................................... 6 2 IMPLEMENTATION LANGUAGES ........................................................7 2.1 SURVEY OF ‘C’ PROJECTS ......................................................................... 8 2.1.1 Shared Libraries ............................................................................... 9 2.1.1.1 GDAL/OGR ...................................................................................9 2.1.1.2 Proj4 .............................................................................................11 2.1.1.3 GEOS ...........................................................................................13 2.1.1.4 Mapnik .........................................................................................14 2.1.1.5 FDO..............................................................................................15 2.1.2 Applications .................................................................................... 16 2.1.2.1 MapGuide Open Source...............................................................16 -
Gvsos: a New Client for Ogc® Sos Interface Standard
GVSOS: A NEW CLIENT FOR OGC® SOS INTERFACE STANDARD Alain Tamayo Fong i GVSOS: A NEW CLIENT FOR OGC® SOS INTERFACE STANDARD Dissertation supervised by PhD Joaquín Huerta PhD Fernando Bacao Laura Díaz March, 2009 ii ACKNOWLEDGEMENTS I would like to thank to professors Joaquin Huerta and Michael Gould for their support during every step of the Master Degree Program. I would also like to thanks the Erasmus Mundus Scholarship program for giving me the chance to be part of this wonderful experience. Last, to all my colleagues and friends, thank you for making this time together so pleasant. iii GVSOS: A NEW CLIENT FOR OGC® SOS INTERFACE STANDARD ABSTRACT The popularity of sensor networks has increased very fast recently. A major problem with these networks is achieving interoperability between different networks which are potentially built using different platforms. OGC’s specifications allow clients to access geospatial data without knowing the details about how this data is gathered or stored. Currently OGC is working on an initiative called Sensor Web Enablement (SWE), for specifying interoperability interfaces and metadata encodings that enable real‐time integration of heterogeneous sensor webs into the information infrastructure. In this work we present the implementation of gvSOS, a new module for the GIS gvSIG to connect to Sensor Observation Services (SOS). The SOS client module allows gvSIG users to interact with SOS servers, displaying the information gathered by sensors in a layer composed by features. We present the detailed software engineering development process followed to build the module. For each step of the process we specify the main obstacles found during the development such as, restrictions of the gvSIG architecture, inaccuracies in the OGC’s specifications, and a set of common problems found in current SOS servers implementations available on the Internet. -
Qgis-1.0.0-User-Guide-En.Pdf
Quantum GIS User, Installation and Coding Guide Version 1.0.0 ’Kore’ Preamble This document is the original user, installation and coding guide of the described software Quantum GIS. The software and hardware described in this document are in most cases registered trademarks and are therefore subject to the legal requirements. Quantum GIS is subject to the GNU General Public License. Find more information on the Quantum GIS Homepage http://qgis.osgeo.org. The details, data, results etc. in this document have been written and verified to the best of knowledge and responsibility of the authors and editors. Nevertheless, mistakes concerning the content are possible. Therefore, all data are not liable to any duties or guarantees. The authors, editors and publishers do not take any responsibility or liability for failures and their consequences. Your are always welcome to indicate possible mistakes. This document has been typeset with LATEX. It is available as LATEX source code via subversion and online as PDF document via http://qgis.osgeo.org/documentation/manuals.html. Translated versions of this document can be downloaded via the documentation area of the QGIS project as well. For more information about contributing to this document and about translating it, please visit: http://wiki.qgis.org/qgiswiki/DocumentationWritersCorner Links in this Document This document contains internal and external links. Clicking on an internal link moves within the document, while clicking on an external link opens an internet address. In PDF form, internal links are shown in blue, while external links are shown in red and are handled by the system browser. -
From GDAL to SAGA: Tips & Tricks from the World of Open Source
From GDAL to SAGA: Tips & Tricks from the World of Open Source Trevor Hobbs Resource Information Manager Huron-Manistee National Forests From GDAL to SAGA: Tips & Tricks from the World of Open Source Trevor Hobbs Resource Information Manager Director of Location Intelligence Huron-Manistee National Forests Purpose of this Presentation • Provide a brief introduction to a variety of open source GIS software • Serve as a reference to links and documentation • DEMO– LiDAR data processing using Open Source GIS • Relate open source GIS workflows to ESRI workflows • Promote greater awareness of open source GIS at IMAGIN Application Soft Launch – Michigan Forest Viewer, LiDAR Derivative Products served as WMTS layers through Amazon Web Services What is “Open Source” GIS? From the Open Source Geospatial Foundation… Technical • Open Source: a collaborative approach to Geospatial software development Documentation Release • Open Data: freely available information to use as you wish Collaborative Sustainable • Open Standards: avoid lock-in with interoperable Open Source Participatory software Social Open Developers Fair • Open Education: Removing the barriers to Community Guide learning and teaching Open Source Geospatial Foundation https://www.osgeo.org/ My Journey to Open Source… • Think geo-centric solutions, not software-centric solutions • International community of geospatial professionals from all backgrounds • Transparency builds trust Where do I get the Software? OSGeo Installation… • Link to download… https://qgis.org/en/site/forusers/download.html -
(Iso19107) of the Open Geospatial Consortium
Technical Report A Java Implementation of the OpenGIS™ Feature Geometry Abstract Specification (ISO 19107 Spatial Schema) Sanjay Dominik Jena, Jackson Roehrig {[email protected], [email protected]} University of Applied Sciences Cologne Institute for Technology in the Tropics Version 0.1 July 2007 ABSTRACT The Open Geospatial Consortium’s (OGC) Feature Geometry Abstract Specification (ISO/TC211 19107) describes a geometric and topological data structure for two and three dimensional representations of vector data. GeoAPI, an OGC working group, defines inter- face APIs derived from the ISO 19107. GeoTools provides an open source Java code library, which implements (OGC) specifications in close collaboration with GeoAPI projects. This work describes a partial but serviceable implementation of the ISO 19107 specifi- cation and its corresponding GeoAPI interfaces considering previous implementations and related specifications. It is intended to be a first impulse to the GeoTools project towards a full implementation of the Feature Geometry Abstract Specification. It focuses on aspects of spatial operations, such as robustness, precision, persistence and performance. A JUnit Test Suite was developed to verify the compliance of the implementation with the GeoAPI. The ISO 19107 is discussed and proposals for improvement of the GeoAPI are presented. II © Copyright by Sanjay Dominik Jena and Jackson Roehrig 2007 ACKNOWLEDGMENTS Our appreciation goes to the whole of the GeoTools and GeoAPI communities, in par- ticular to Martin Desruisseaux, Bryce Nordgren, Jody Garnett and Graham Davis for their extensive support and several discussions, and to the JTS developers, the JTS developer mail- ing list and to those, who will make use of and continue the implementation accomplished in this work. -
Centre for Geo-Information Thesis Report GIRS-2018-06 Managing Big Geospatial Data with Apache Spark Msc Thesis Hector Muro Maur
Centre for Geo-Information Thesis Report GIRS-2018-06 Managing Big Geospatial Data with Apache Spark MSc Thesis Hector Muro Mauri March 2018 Managing Big Geospatial Data with Apache Spark MSc Thesis Hector Muro Mauri Registration number 920908592110 Supervisors: Dr Arend Ligtenberg Dr Ioannis Athanasiadis A thesis submitted in partial fulfillment of the degree of Master of Science at Wageningen University and Research Centre, The Netherlands. March 2018 Wageningen, The Netherlands Thesis code number: GRS80436 Thesis Report: GIRS 2018 06 Wageningen University and Research Centre Laboratory of Geo-Information Science and Remote Sensing Contents 1 Introduction 3 1.1 Introduction & Context.........................................3 1.2 Problem definition & Research questions................................5 1.3 Structure of the document........................................5 2 Methods & Tools 6 2.1 Methods..................................................6 2.2 Tools....................................................7 3 Tests Design & Definition 9 3.1 Functionality Test............................................9 3.2 Performance Benchmark Test...................................... 17 3.3 Use Case................................................. 19 4 Functionality Test Results 21 4.1 Magellan.................................................. 21 4.2 GeoPySpark................................................ 25 4.3 GeoSpark................................................. 28 4.4 GeoMesa................................................. 31 5 Results -
Client-Side Versus Server-Side Geoprocessing
CLIENT-SIDE VERSUS SERVER-SIDE GEOPROCESSING Benchmarking the performance of web browsers processing geospatial data using common GIS operations. by Erin L. Hamilton A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science (Cartography and Geographic Information Systems) at the UNIVERSITY OF WISCONSIN–MADISON 2014 i Acknowledgements The completion of this thesis could not have been accomplished without the help and support of many people. Thank you to Jim Burt for serving as my advisor. Your ability to see the big picture and ask hard questions made my work infinitely stronger. Your feedback on my drafts pushed me to produce my best work and I am thankful for that. Thank you to Qunying Huang and David Hart for serving on my committee. Your feedback on this thesis was much appreciated. More importantly, the support you provided me in improving my programming skills over the past three years enabled me to execute the technical pieces of this research. I am extremely grateful for that. Thank you to the members of the GIS group. The questions asked during my research progress presentations over the last year were significant in shaping and refining my work. Big thank you to the people in the Cartography Laboratory. Your guidance, support, and friendship were critical in keeping me moving forward. I especially want to thank Tanya Buckingham and Daniel Huffman for providing me with so much insightful perspective and advice along the way and Bill Buckingham for providing tremendously helpful recommendations on my writing. Thank you to my Mom and Dad for being my cheer team across the country.