18,611 Works

Gold Open Access verändert Bibliotheken

Bernhard Mittermaier
Seit zwei Dekaden folgt der Anteil der Gold OpenAccess-Publikationen am Gesamtaufkommen der Zeitschriftenartikel einem exponentiellen Wachstum. Treiber der Entwicklung waren bislang vor allem das Eigeninteresseder Autoren und Anforderungen der Forschungsförderung. In Zukunft werden die zunehmende Zahl von Offsetting-Verträgen[1] und ggf. die Transformations-Initiative der MPG[2] für weitere Zuwächse sorgen. Bei Fortsetzung der bisherigen Entwicklung wird 2023 jede zweite Publikation Gold Open Access sein.Bei vielen Bibliotheken und ihren Trägern ist das Bewusstsein über die Dynamik der Entwicklung...

Laser fundamentals III

Shaoul Ezekiel
This resource contains demonstrations used to illustrate the theory and applications of lasers and optics. A detailed listing of the topics can be found below. Lasers today are being used in an ever-increasing number of applications. In fact, there is hardly a field that has not been touched by the laser. Lasers are playing key roles in the home, office, hospital, factory, outdoors, and theater, as well as in the laboratory. To learn about lasers...

Feuerwehreinsatzkarten mit OSM

Roman Härdi
Wenn es brennt, eilt es! – Karten in vorbereiten Akten sollen für die Anfahrt und für den Einsatz die notwendigen Informationen gut lesbar zur Verfügung stellen. Der Vortrag zeigt, welche die für die Feuerwehr wichtigen Informationen mit Geobezug sind (z.B. Anfahrt, Gefahren, Transformatoren/Verteilkasten, Wasserbezug, Gebäudeinformationen). Welche gibt es schon in OpenStreetMap und welche fehlen noch? Bei unserer Feuerwehr gibt es auch noch „exotische“ Löschwasserquellen: unterirdische vorbereitete Staustellen, welche natürlich auch visualisiert werden müssen, weil sie...

Go SCTP!

Olivier Van Acker
Two technologies; both new, exciting, with lots of new features, so why not put them together and have even more fun? This talk is about my effort to combine two (relatively) new technologies; Stream Control Transmission Protocol (SCTP) and the computer language Go, by implementing the functionality of SCTP as a library in Go. SCTP is a reliable message oriented transport protocol, has resistance against flooding and masquerade attacks and includes congestion avoidance procedures. First...

Safer Navigation Using Electronic Navigational Charts, AIS and RADAR Data powered by FOSS4G

Bogdan Grama, Iulian Iuga & Servet Giafer
Ships have long been required to carry nautical charts and nautical publications to plan and display the ship's route for the intended voyage and to plot and monitor positions throughout the voyage. Today we have complex electronical navigational charts and many of them are freely distributed and are constantly updated. An electronic navigational chart or ENC (IENC for Inland waterways) is an official database created by a national hydrographic office for use with an Electronic...

Streaming and rendering the Turin 3D geospatial content through GIS and BIM integration

Fabrizio Massara, Fabrizio Provera & Adelaide Ramassotto
We started working on BIM (Building Information Model) and GIS integration in 2016. At that time, as one of the results of EU funded research project [DIMMER](http://www.drawingtothefuture.polito.it/projects/dimmer/), we [linked](http://2016.foss4g.org/talks.html#140) the simplified representations exported from BIM to the urban environments in Turin, Italy and Manchester, UK. Since 2016, our work on GIS and BIM integration has steadily [progressed](https://webthesis.biblio.polito.it/6408/). Nowadays, the Municipality of Turin uses the successful integration of GIS and BIM objects for internal facility management...

Creating Stunning Maps in GeoServer, with SLD, CSS, YSLD and MBStyles

Andrea Aime & Mauro Bartolomeoli
Various software can style maps and generate a proper SLD document for OGC compliant WMS like GeoServer to use. Several topics will be covered, providing examples in the various GeoServer styling languages, including: * Mastering common symbolization, filtering, multi-scale styling * Using GeoServer extensions to build common hatch patterns, line styling beyond the basics, such as cased lines, controlling symbols along a line and the way they repeat * Leveraging TTF symbol fonts and SVGs...

A tool for localised cloud cover assessment

Jesko Zimmermann & Stuart Green
Open source satellite imagery becomes increasingly important in many areas of research and business. In the case of agriculture, it is being used to assess land use, support subsidies, and to help farmers to manage their land more efficiently. Many of these applications require regular revisits to best catch temporal the variety that defines many land uses. Cloud cover can be a serious issue, often obscuring the majority of images acquired from passive sensors. Filtering...

TEAM Engine - Validation of new OGC standard WFS 3.0 and status update of project

Dirk Stenger
TEAM Engine is a testing facility enabling developers and users to test geo services, such as WFS or WFS, and geo formats, like GML or GeoPackage. The Open Geospatial Consortium (OGC) provides various test suites for TEAM Engine to support implementing and testing of GIS software basing on OGC standards. TEAM Engine is an OSGeo project in incubation phase. A test suite for new OGC standard WFS 3.0, which is currently a candidate standard (status...

Let's Power the Analytics and 3D to the Web Based Military Geo-Portal using FOSS4G!

Sanghee Shin, Sungjin Kang, Byungchul Bae, Hanjin Lee & Minpa Lee
I'll introduce the web based military geo-portal system which was implemented on top of numerous open source projects such as PostGIS, GeoServer, Cesium, mago3D, OpenGXT. This military geo-portal system provides search, layer control, satellite image retrieval, spatial/terrain analysis, reading coordinates, and map notes functionalities to the military officers through intranet. This system is basically a web based 3D GIS utilizing mago3D and can be switched to 2D. This system utilizes the OGC WPS(Web Processing Service)...

Crunching Data In GeoServer : Mastering Rendering Transformations, WPS Processes And SQL Views.

Mauro Bartolomeoli, Andrea Aime, Nuno Oliveira & Simone Giannecchini
This presentation will provide the attendee with an introduction to data processing in GeoServer by means of WPS, rendering transformations and SQL views, describing real applications and how these facilities were used in them. We'll start with the basic WPS capabilities, showing how to build processing request based on existing processes and how to build new processes leveraging scripting languages, and introducing unique GeoServer integration features, showing how processing can seamlessly integrate directly in the...

Revamp of CRS management in the OSGeo C/C++ stack

Even Rouault
In this talk, we will give an overview of the recent works that have occurred in the PROJ, libgeotiff and GDAL libraries regarding Coordinate Reference Systems (CRS). Those improvements have mostly taken place in the venerable PROJ library that has evolved over the last 30 years from handling “only” more than hundred of cartographic projections to becoming a full-fledged library for CRS management and transformations. PROJ 6 now supports OGC and ISO standards regarding object...

Gflowiz: Flow maps in the geoweb

Nicolas Roelandt, Francoise Bahoken, Laurent Jégou, Etienne Come, Marion Maisonobe, Gregoire Le Champion & Thomas Bapaume
Geographic flow visualization (gFlowiz) is an interdisciplinary project dedicated to flows and networks in the geoweb. It is led by a team of French researchers and engineers in Geography, Cartography and Computer Science from both IFSTTAR and CNRS. gFlowiz follows the new paradigm of « visualization mapping » (MacEachren, 2004) not present in current geoweb applications. All types of flows, movements and traffic in a geographical space, at several scales, are involved (migrations, freight, transportation,...

GlobWetland Africa Toolbox: Implementing Earth Observation based Wetland Monitoring Capacity in Africa

Radoslaw Guzinski
The availability of the growing volume of environmental data from the Sentinel satellites represents a unique opportunity for the operational usage of Earth Observation (EO) for wetland inventorying, assessment and monitoring on global scale. However, it also poses major challenges in terms of data access and exploitation to achieve its full potential. GlobWetland Africa (GWA) Toolbox is an outcome of an initiative of the European Space Agency launched to facilitate the exploitation of satellite observations...

SIRA – a single framework to search and view complex datasets through OGC services

Alfieri Paola, Simona Costamagna, Navarretta Antonello & Sanmartino Diego
Complex alphanumeric information originating from heterogeneous sources (e.g. administrative procedures, cadastre/registry, environmental measures…) are relevant both as search keys of elements on maps and as essential knowledge layers. Regione Piemonte project addresses the need of integrating geo-alphanumeric search and view capabilities in a single tool. Beside standard geoportal functionalities, the tool supports users to: search datasets available in one or more SDI (CSW), enabling functions customized on each dataset served in WFS 2.0 Complex-Feature, such...

From paper to pods: Revolutionised fibre planning process at Deutsche Telekom AG with FOSS4G components

Torsten Drey, Emmanuel Belo, Marc Jansen & Markus Neteler
Compared to other industrialised countries Germany [ranks rather low](https://de.statista.com/infografik/3553/anteil-von-glasfaseranschluessen-in-ausgewaehlten-laendern/) when it comes to the availability of broadband internet via fibre. In order to change this and to cope with the needs for the new mobile standard 5G, Deutsche Telekom AG (DTAG) revolutionised the planning of fibre networks. The main goal is to shorten the time to market dramatically by automating processes. A brand-new world comprising lots of geodata and heavy geoprocessing is needed to substitute...

Social protection portal Kampala - On open source portal for humanitarian use

Lars Agerskov Christensen
In close collaboration with UNICEF Uganda and GeoGecko, KCCA spearheaded the development of an online open source portal to provide a visual presentation of key social services available in Kampala. The tool is built on the backbone of four pillars aimed at (i) identifying key partners’ operations and the nature of their engagement in Kampala, (ii) mapping infrastructure points designed to deliver predetermined services (e.g. schools), (iii) summarizing parish level specific socio-economic profiles, and ultimately...

GRASS GIS in the cloud: actinia geoprocessing

Carmen Tawalika & Markus Neteler
Initially called GRaaS (GRASS as a Service), actinia has been developed to exploit GRASS GIS functionality via HTTPS REST API. GRASS locations, mapsets, vector and raster data as well as spatio-temporal data are available as resources to allow their management and visualization. With the existing (e.g. Landsat) and also recently emerging (Copernicus Sentinel) big geodata pools which are growing day by day, it is designed to follow the purpose of bringing algorithm to cloud geodata....

How digging into the earth for the fibre roll-out took GRASS to the cloud

Markus Neteler, Markus Metz, Anika Bettge, Torsten Drey & Carmen Tawalika
Deutsche Telekom AG (DTAG) revolutionises the planning process of fibre networks (FTTH) to * increase number of connected households and industries dramatically, and * shorten the time to market in general. For this goal DTAG, advanced geoprocessing algorithms including artificial intelligence (AI) automate the conversion of surface information into cost optimised potential trenches used in the fibre build process. The surface information is gathered by terrestrial laser scanners and photos as well as extracted through...

Global land cover monitoring and updating: big data challenges

Dainius Masiliūnas, Nandin-Erdene Tsendbazar, Martin Herold, Myroslava Lesiv, Marcel Buchhorn, Bruno Smets, Ruben Van De Kerchove & Jan Verbesselt
The Copernicus Global Land Service (CGLS) aims to provide yearly-updated land cover maps, including land cover fractions (i.e. the fraction of each land cover class within each pixel). It makes use of FOSS software (Python, R, GDAL) for all data processing steps. Our work in the project focuses on two aspects: land cover fraction mapping at the continental level (Africa) and yearly map updating. For land cover fraction mapping, to select the most appropriate method,...

GeoServer WFS3: introduction to the RESTful, schemaless, JSON first download service

Andrea Aime
The WFS 3 specification introduces a number of significant changes in the protocol compared to older versions, to mention just a few: * Small core with basic functionality, extra functionality provided by extensions * OpenAPI/RESTful based * GeoJSON first, while still allowing serving data in GML * No mandate to publish schemas for data Come to this presentation to have a quick introduction to this new protocol version, get updates on its implementation in GeoServer,...

Big Data above and beyond, OpenLayers and Power BI working together

Daniel Urda & Florin Iosub
The sheer amount of statistics collected as the world entered the age of Big Data transformed computers from simple tools for processing data into complex machines able to present the results of this processing as compelling visuals with little to no human input. And when it comes to presenting the evolution of phenomena that vary in space and time, there is no better solution than a map. As part of a project involving a major...

Composing and securing spatial data interfaces. When? Why? How? Serverless edition.

Dennis Bauszus
A comprehensive presentation of the design process leading to a NodeJS framework which acts as a spatial data and application interface. The XYZ framework also provides a control library and responsive views tying everything together. Library methods make use of function composition in javascript to augment methods for a range of client applications. A monorepo is used to handle deployments on a server, as a cloud function or as an API gateway for microservices. A...

Battle of 3D Rendering Stacks: CesiumJS, VTS Geospatial or iTowns?

Ladislav Horký
When you choose a 3D rendering stack to work with your 3D city model, your best options are open-source: CesiumJS, VTS Geospatial or iTowns. While it is not trivial to make a direct one-to-one comparison because each stack is built on slightly different philosophy, they all strive for the best possible performance. In this talk we will discuss the strong points of each stack and show a performance comparison between them carried out on the...

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