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26:32 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Trying to visualize GIS & BIM information on the web: a solution using Leaflet and Cesium

While GIS is a term whose use has now been consolidated for years now, BIM is a term whose use is increasingly widespread over the past few years. The both deal with geo-localized "objects", so the ongoing studies for a common point of the GIS and BIM different views of the same object is somewhat unavoidable. A first attempt at integration information belonging from these two worlds is presently under way in the framework of EU funded DIMMER project. This project integrates BIM, district level 3D models with near-real time data from sensors and user feedback in order to analyze and correlate buildings utilization, and to provide information about energy-related behaviors to users and other stakeholders. From the point of view of technology, the project uses open source technologies such as Java, Leaflet and Cesium, as far as GIS is concerned: here you're an architectural schema. The web application integrated GIS data read directly from a POSTGIS data base, with data flows from BIM services, near-real time data from sensors distributed over the territory under examination, and on line processed indexes/calculations. The present version of the project makes it possible to consult sensor information in near-real time, as well as the other processed calculations/indexes, through a web dashboard that includes as primary elements both a 2D map (based on Leaflet), as well as a 3D map (based on CesiumJS).
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
21:15 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Create Vector Tiles from OpenStreetMap

The OSM2VectorTiles project offers free downloadable vector tiles ready to use by people interested in hosting custom base maps on their own infrastructure. The whole world fits on a USB stick and can be served from an ordinary web hosting and styled and enriched to make beautiful and fast maps for web and mobile applications. The advantages of vector tiles over traditional raster tiles are well known. There are already a handful of vector tile provider present, but they may not always serve your use case optimally. After this talk you will know how to create your own custom vector tiles based on OpenStreetMap and will know the tools and processes you need to use. The talk will cover how to import OpenStreetMap data into PostGIS and then shows how to generate vector tiles using Tilelive and Mapnik. We will present the open source workflow we use at OSM2VectorTiles to prerender global vector tiles and instruct you how to adapt the workflow to create custom vector tiles. Thanks to Docker and tools such as Mapnik, PostGIS, Tilelive and Mapbox Studio Classic the process is straightforward and repeatable. Manuel Roth (HSR University of Applied Science Rapperswil Switzerland) Lukas Martinelli (HSR University of Applied Sciences Rapperswil Switzerland) Petr Pridal (Klokan Technologies GmbH)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:01 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

QWCII: A new QGIS Web Client

QGIS Web Client (QWC) is a Web-GIS client based on OpenLayers 2 and ExtJS and tailored to use special extensions of QGIS Server, such as extracting information from QGIS Project settings, extended GetFeatureInfo Requests, GetPrint and DXF export. It uses standard WMS/WFS commands, but extends them where needed. QWC is used by several cities and provinces in Europe. There are four main reasons why QWC needs to be overhauled: The code structure is not very modular and should be better structured. QWC only works well on Desktops. Despite a separate mobile web client based on OpenLayers 3 and jQuery Mobile, for maintenance reasons it would be much better to have a single web client that uses responsive design and works for all devices from a single viewer. The base libraries ExtJS 3.4 and Openlayers 2 have been phased out and there are newer versions available. However, the upgrade to the newer versions is not trivial. Having a more modern foundation based on newer web technologies This presentation discusses the requirements, the progress of this project, technical decisions taken and challenges solved during the project. While the first goal of the project is to establish a modern foundation for the coming years and reach feature parity with the old QWC project, it is already planned to implement a QWCII python plugin that offers a GUI and assists with the global configuration of the client. This tool should also facilitate the management of topics and projects.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:50 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

How the Land Administration community profits from Open Source

The Social Tenure Domain Model (STDM) is a concept, model and information tool to map people-to-land relationships. STDM is developed and maintained by the Global Land Tool Network (GLTN) under the lead of the UN Habitat. The data model was closely aligned with LADM, an ISO standard on Land Management followed by most implementers. When it came to implementing the software tool the GLTN group decided against reinventing the wheel but to check out existing Open Source components (as maintained by the OSGeo Foundation) and Open Standards (as maintained by the OGC). So basically everything from the data model, technology standards and up to all the tools required to do proper Land Administration is already there. But it is too complex for non-technical people to grapple with. Therefore the GLTN group started to implement a software package which shipped with the right data model for the Postgres and PostGIS database, the desktop software QGIS, reporting tools and comprehensive documentation. This presentation will give an overview of the software tool and underlying components to give participants with limited technological background a better understanding of how it works and how they can also profit from the abundance of great Open Source software that is out there.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
33:47 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Developing an Open Pedestrian Landmark Navigation Model

Today's publicly available pedestrian navigation systems still use paradigms developed for car navigation. In this paper, we present a novel landmark-based pedestrian navigation model using open source tools and open data from OpenStreetMap, which is available globally and free of charge. This approach ensures that our landmark navigation model is widely applicable, rather than restricted to a certain area with exceptional data sources. Our contributions cover algorithms for extraction, weighing, and selection of landmarks based on their suitability, as well as the generation of landmark-based navigation instructions for a given pedestrian route. The system has been implemented using PostGIS as a data store and QGIS for algorithm development. First field tests with pedestrians show promising results by confirming that our weighted landmark selection outperforms a simple baseline approach by reducing the number of navigation errors and revealed future challenges for the generation of intuitive pedestrian navigation instructions.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
22:41 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Building applications with FOSS4G bricks: two examples of the use of GRASS GIS modules as a high-level "language"' for the analyses of continuous space data in economic geography

In a world where researchers are more and more confronted to large sets of micro-data, new algorithms are constantly developed that have to be translated into usable programs. Modular GIS toolkits such as GRASS GIS offer a middle way between low-level programming approaches and GUI-based desktop GIS. The modules can be seen as elements of a programming language which makes the implementation of algorithms for spatial analysis very easy for researchers. Using two examples of algorithms in economic geography, for estimating regional exports and for determining raster-object neighborhood matrices, this paper shows how just a few module calls can replace more complicated low-level programs, as long as the researcher can change perspective from a pixel-by-pixel view to a map view of the problem at hand. Combining GRASS GIS with Python as general glue between modules also offers options for easy multi-processing, as well as supporting the increasingly loud call for open research, including open source computing tools in research.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
28:20 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Paleomaps: SDI for paleoenvironment GIS data

Paleoenvironmental studies and according information (data) are abundantly pub-lished and available in the scientific record. However, GIS-based paleoenviron-mental information and datasets are comparably rare. Here, we present an OpenScience approach for collecting and creating GIS-based data and maps of paleoenvironments, and publishing them in a web based Spatial Data Infrastructure (SDI),for access by the archaeology and paleoenvironment communities. The Open Science approach to the publication of data, allows to properly cite the publisheddatasets as bibliographic sources in research that builds upon these data sets.This paper has its focus on the implementation and setup of the Free and OpenSource Software for Geospatial (FOSS4G) based SDI, and on the workflow forcompiling and publishing the GIS data.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
18:17 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Analysing the practical feasibility of FOSSGIS in military operations – A Cholera outbreak use case

Remaining ahead of the enemy in all circumstances is crucial to any military power. Geographic information systems (GIS) can provide the military commander with geospatial information about the theatre of war to assist with the planning and execution of a mission. Unfortunately, technology usually comes at a price. GIS is no exception. The cost of acquiring and maintaining GIS software licenses, as well as training staff in the use of the software, needs to be considered. The question arises whether open source software, which can be used without any software license expenses, is a feasible alternative in military operations. The problem is that the perception exists that open source GIS software is neither user-friendly nor mature enough to be used in military operations. This study evaluates the functionality of an open source desktop GIS product in a military operations use case. A list of specific GIS functionalities was compiled based on the literature study and by developing a use case. The functionalities were executed in QGIS. Results were compared against results of the same functionalities in ArcGIS, which is widely used in military operations. Results show that all GIS functions tested by this study could be performed by both software products. These results are interesting because it means that FOSSGIS can be successfully deployed by units or directorates that has limited funds available to expand the existing GIS capabilities for military operations.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:17 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Humanitarian Capacity Building and Preparedness with QGIS

MapAction has been using QGIS for the past five years or so as its principal training tool when working with humanitarian agencies in a number of countries affected by humanitarian disaster and conflict. This talk will focus on the training and preparedness work that MapAction has carried out with QGIS, reflecting on the experience of using QGIS, describing the methods it has employed to work with both GIS professionals and staff new to GIS, and what has been learned in the process. This will include some discussion of what has been successful and less successful, and how the use of mapping and GIS in humanitarian response can be encouraged and supported in the long term. There will also be examples of QGIS products and implementation by other organisations, with a view to identifying best practice and the means of disseminating this in the humanitarian information management community.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:24 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Mapping WiFi measurements on OpenStreetMap data for Wireless Street Coverage Analysis

The growing interest on smart cities and the deployment of an ever increasing number of smart objects in public locations, such as dumpsters, traffic lights, and manholes, requires ubiquitous connectivity for these devices to communicate data and to receive configurations. Opportunistic WiFi connectivity is a valid alternative both to ad hoc solutions, like LoRa, which require costly deployments, and to communicating through the mobile network, which is both pricey and battery power hungry. In this paper we present a tool to analyze the WiFi coverage of home Access Points (AP) on the city streets. It can be of interest to ISP or other providers which want to offer connectivity to Internet of Things smart objects deployed around the city. We describe a method for gathering WiFi measures around the city (by leveraging crowdsourcing) and an open source visualization and analysis web application to explore the accumulated data. More importantly, this framework can leverage the semantic information contained in OpenStreetMap data to extract further knowledge about the AP deployment in the city, for example we investigate the relationship between the AP density per square kilometer within the city and the WiFi street coverage ratio
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
27:44 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Collect & Manage Geospatial Data Edits with GeoSHAPE

Syrus Mesdaghi (Prominent Edge LLC)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:32 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Real-time large format maps for passenger information on railway disruptions

Focusing on a clearer and more visible passenger information, Swiss Federal Railways SBB modernized the general displays in the biggest Swiss railway stations. The former mechanical palette displays were replaced by LED screens of up to 5 meters width. In case of severe traffic disruptions these monitors are used for providing the passenger with general information. Additionally, a huge (perhaps the biggest) map based on OpenLayers 3 is shown on the monitor enabling the passenger to get a fast overview of the situation. The key component of the service-based architecture is the geographical content management system Cartaro. It is used by the employees in the SBB operation centers for composing and editing the information to display. Among issues like performance, reliability and availability a major challenge for the system was the development of tools for the fast and simple creation of a clear and appealing map. The software automatically generates a map based on real-time timetable information, identifies the affected stations and highlights the interrupted route using a routing-based approach. A set of integrated spatial editing tools enables the user to e.g. modify route geometries at different generalization levels and to align map labels.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:23 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

GeoMapFish 2 - Ready for the Future

GeoMapFish is an open source WebGIS platform developed in close collaboration with a large user group. The second version offers a modern UI based on AngularJS. OpenLayers 3 and an OGC architecture allow to use different cartographic engines. Highly integrated platform, large features scope, fine grained security, reporting engine, top performances and excellent quality of service are characteristics of the solution. In this talk we’ll present the technical aspects of the platform and its modular architecture.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
27:04 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

MapStore 2, modern mashups with OL3, Leaflet and React

MapStore 2 is an overhaul of the existing MapStore with the goal of creating a webmapping framework which is more lightweight but still modular and easy to work with. It can leverage both OpenLayers 3 or Leaflet as the mapping engine and uses ReactJS and Redux as the core JavaScript libraries. Moreover a 3D viewer based on CesiumJS is available. MapStore 2 is both a framework and a standalone application. You can use it as a framework to develop your custom WebGis application composing MapStore ReactJS components and components from other libraries (like React Bootstrap), choosing the best mapping library for your purposes. You can also use the MapStore2 application directly, to create, save, and share in a simple and intuitive way maps and mashups created by selecting content from the server such as Google Maps, OpenStreetMap or WMS and WMTS. The MapStore 2 application consists of two main components MapManager and GeoStore, respectively front-end and back-end. MapManager allows through a unique interface to create, modify, delete and search on maps definition as well as generate a univoque link to embed a map in an external website, share your own maps with the others. GeoStore implements a flexible Java Enterprise infrastructure to manage and search maps with proper management of authentication and authorization. The presentation will give the audience an extensive overview of the MapStore 2 functionalities for the creation of mapping portals. Eventually, a range of GeoSolutions case studies of MapStore 2 will be presented.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:20 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Coordinate systems and map projections with EPSG.io

EPSG.io allows to search in a global database of spatial reference systems, datums, ellipsoids and projections to identify transformation parameters required for a software to correctly handle the geographic location in a known coordinate system. This presentation shows various functions of the search system, and demonstrates how to use it efficiently to discover and identify the right coordinate system, transform the sample coordinates online, pick a position on a map, convert units, etc. It is possible to export definitions of coordinate systems in various formats, including WKT, OGC GML, XML, Proj.4, SQL or JS and directly use these in compatible systems such as Proj4JS and OpenLayers or PostGIS. The whole system is open-source with code on GitHub, and in the background it uses OSGeo Proj4 / OGR for all the transformations and it is powered by the latest EPSG Geodetic Parameter Registry released by IOGP regularly. The open-source tools used in backend could be used called on a command line in batch operations. Ideas for future improvement and cooperation with the community will be discussed.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
22:38 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Garbage Collection with FOSS4G

Garbage collection is a topic for sustainable cities that are moving from picking up on individual houses to pick up garbage stored on containers. Minimizing trucks on the street, minimizing the travel times, while maximizing the number of containers that are picked up are desirable of the routes planned. This kind of problems have different types of constraints, for example, capacity constraints: limited number of trucks and each of different capacity. Some are time constraints, for example, a set of driver might have the morning shift, while some others work the night shift. Some constraints are topology based: a truck can not make a U-turn or an acute turn. This presentation you will learn the concepts behind this kind of optimization problems and how FOSS4G can facilitate finding a solution.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
23:39 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

QGis as a platform: transforming the desktop QGis for tablet use in Flanders fields

In this talk we'll take the off-the-shelf QGis you've come to know and love on your desktop and search the limits of customization. We'll transform the standard desktop application to a version tailored for tablet use including a finger-friendly interface, camera integration and full offline editing support with data synchronisation. Taking QGis where no QGis has gone before, we take the theory into Flanders fields. We demonstrate the possibilities of the technology with a use case where QGis is used in the field to assess soil erosion in the hills of Flanders. Thanks to a strong foundation and simple yet powerful customization options, we learn that Qgis can really outperform your expectations, even outside of its (or your?) comfort zone. Bring your boots!
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
20:30 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

OSM Stats: Rewarding contributors and real-time tracking of OSM

Mapathons are an increasingly effective way to get data into OpenStreetMap. The Missing Maps project hosts mapathons to increase the amount of data in areas that don't have large local OSM communities. The American Red Cross and Development Seed have built an analytics platform that tracks user trends in real-time and rewards contributors for their efforts, as can be seen at missingmaps.org OSM-stats tracks user's activity, consistency and relative reputation, reporting detailed metrics and awarding a variety of themed badges based on the type and magnitude of contributions. Badges range from simple tasks ("Add 4 roads") to challenging ("Map in 10 countries"). Leaderboard pages display up to date detail on the most active users for a current project, while hashtag groupings display statistics to be separated out, allowing tracking of groups. A map of each users commits can be seen, as can a map view indicating the last 100 changes. Most of the contributions for the Missing Maps project occur during mapathons where hundreds of volunteers submit edits and additions over a couple of hours. This means that the system needs to handle large spikes of activity when thousands of edits are added. We deployed the OSM-stats components using AWS Lambda functions and Kinesis streams. These scale very well to meet the needs of Mapathons and incur minimal cost when not in use.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:47 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

How to make a 3D web geoportal

Did you ever fly around a country in 3D? In your standard web browser? Without plugins? 3D for the web is an emerging technology. WebGL enables web browsers to exploit the GPU of a computer to create beautiful and fast 3D worlds. It is time for web geoportals to go 3D. swisstopo was able to create a 3D viewer for the geoportal of the swiss confederation map.geo.admin.ch. We'll show you how it was done - and how Open Source enabled it.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
27:40 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

GDAL 2.1: what's new ?

Initiated in 1998, the GDAL/OGR (Geospatial Data Abstraction Library) library has dramatically grown, supporting from 20 raster and vector formats in its early 1.1 version to more than 220 in the latest v2.0 In the meantime, it has been successfully adopted by hundreds of software projects, being at the foundation of many GIS stacks. After a quick overview of the current capabilities, we will focus on recent developments and achievements that will be available in GDAL 2.1: new raster drivers (WMTS, Sentinel 2, …), new vector drivers (MongoDB, VDV-452, …), improvements in existing drivers (GeoJSON, PDF, ElasticSearch), management of the Measure dimension for geometries, support for geographic network models, availability of the C++ command line utilities as library functions usable in different programming languages, ... Finally, we will explore potential future directions for the project. Even Rouault (Spatialys) Ari Jolma (Private) Dmitry Baryshnikov (NextGIS)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
23:37 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Birdhouse: A collection of web processing services for climate data

Processing of climate data is often connected with big data processing, but a frequent problem is that users of the processing outcome are not optimally-equipped with appropriate hardware (computing and storage facilities) nor programming experience for software development to perform the processes themself. Web Processing Services (WPS) can close this gap and offer users a valuable practical tool to process and analyze big data. WPS represents an interface to perform processes over the HTTP network protocol, enabling users to trigger specific processes over a website. The appropriate processes are predefined, together with access to the relevant data archives where appropriate data are provided. This presentation is an introduction to the birdhouse project which provides WPS for climate data processing. Besides calling the WPS with Python libraries, birdhouse provides easy-to-use user-interfaces (web-based and command-line) to run WPS processes and combine them with climate data. The provided processes are reaching from simple climate metadata checks to complex climate impact models used e.g. in agriculture or forestry. The birdhouse is conform with the standardization defined by the Open Spatial Consortium (OGC) allowing combination with WPS from other institutions to establish a network of computing providers.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:52 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Provide applications with Geoportal Framework Mapbender3

Mapbender3 is a client framework for spatial data infrastructures. It provides web based interfaces for displaying, navigating and interacting with OGC compliant services. Mapbender3 has a modern and user-friendly administration web interface to do all the work without writing a single line of code. That sounds good and is fun! Mapbender3 helps you to set up a repository for your OWS Services and to create indivdual application for different user needs. The software is is based on the PHP framework Symfony2 and integrates OpenLayers. The Mapbender3 framework provides authentication and authorization services, OWS Proxy functionality, management interfaces for user, group and service administration. Mapbender3 offers a lots of functionality that can be individually integrated in applications like redlining, digitizer, search modules. Astrid Emde (WhereGroup Bonn)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
28:17 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Open Source as part of an Open Data initiative.

In 2011, the New Zealand Government released the Declaration on Open and Transparent Government, a directive to government agencies to establish open data programmes to enable data reuse, for the wider benefit of New Zealand. This presentation discusses one environmental research agency's approach to providing open data that is not just accessible, but genuinely reusable. Early feedback regarding the programme was positive - but there was a frequent question. Many potential users of open data have had no GIS background, and wanted help in finding tools, and training in the use of those tools to actually make use of the data. In answering this question, it became apparent that a genuinely successful open data programme has three components, with far too many such programmes stopping at the first: Discoverable, accessible metadata and data; Effective, available and affordable tools to work with the data, and; Affordable training for interested users in the use of the tools with the data. This presentation discusses this three pronged approach to an open data programme, actively enhancing and making use of open source and open standards to provide usable open data. One outcome of this programme is presented as “The Democratisation of GIS”, where open Source GIS tools are enabling GIS to become as pervasive as an office suite or web browser on a personal computer. Brent Wood (National Institute of Water and Atrmospheric Research (NIWA) New Zealand)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:45 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

hale studio: Effective Data Analysis and Transformation for Open Standards

hale studio is an open source environment for the analysis, transformation and publication of complex, structured data. We're developing hale studio since 2009 and have reached more than 5.000 downloads per year. Most of our users employ it to easily create INSPIRE data, CityGML models, or to fulfill e-Reporting duties. Some use it with BIM data, health data or even E-Commerce information. In the last year, hale studio has gained a number of headline features and improvements, such as integration with GeoServer app-schema and deegree's transactional WFS. We have also added support for more open formats, such as SQLite and SpatialLite, but also for enterprise formats such as Oracle Spatial and Esri Geodatabases. In this talk, we will provide a quick introduction to the declarative real-time transformation workflow that hale studio affords, highlight the latest developments and provide an outlook on the roadmap for 2016 and 2017. We will also highlight some of the most interesting projects our users are doing. Thorsten Reitz (wetransform GmbH)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
27:00 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

How WebGL vector maps work

Mapbox GL JS is an open source library for modern interactive maps, powered by WebGL. Developed for more than 3 years, it combines a variety of sophisticated algorithms, smart ideas and novel approaches to deliver 60fps rendering of vector data with thousands of shapes and millions of points. In this talk, you will find out how it works under the hood and why it's so challenging to build dynamic WebGL applications. The talk will cover scalable font rendering, line and polygon tessellation, in-browser spatial indexing, collision detection, label placement, point clustering, shape clipping, line simplification, sprite packing, efficient binary data encoding and transfer, parallel processing using Web Workers and more!
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
31:42 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Development of national spatial information sharing system using the FOSS4G and CKAN, Drupal

The Japanese government has begun to create and execute a plan to take advantage of the combined spatial information and ICT technology. From 2014 the Ministry of Internal Affairs and Communications has developed the G-space platform for circulating to collect spatial information of the public and private sectors. I have participated in the development to use the FOSS4G in this system. The G-Space platform of Japanese Goverment is based on data catalog system configured with CKAN and Drupal. We improved spatial information data preview feature in CKAN. We created additional data processing functions for the space-based resources in the CKAN. We did a feature extension for space resources of the selected in CKAN to be displayed using LeafLet . Also we use the GeoServer + PostGIS as a back-end to provide spatial information. Even if the use request to this system becomes much, as can be supported by clustering the back-end system. I'm going to the explanation how we had used the FOSS4G in this system.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:58 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

An environmental modelling and information service for health analytics

Enriching patient information with environmental information such as individual exposure to air pollution or noise is a relevant procedure in health care and research. Generating this exposure information, however, is computationally intensive as the processing of large datasets with fine spatial and temporal discretisation is necessary; thereby usually exceeding hardware resources e.g. of family doctors. In an interdisciplinary research project (Healthy Urban Living) we develop an environmental modelling and information service (EMIS), consisting of these parts: a set of environmental models calculating exposure (e.g. NO2, PM10) on Dutch scale a set of algorithms to calculate exposure of individuals along their space-time paths a set a of microservices to maintain a flexible workflow in generating and executing queries The microservices architecture enables us to perform the computational intensive modelling tasks on institutional or national computing facilities, and allows lightweight client applications such as web portals to query the EMIS and thereby give health researchers straightforward access to exposure data. The presentation gives a general overview of the research project, the EMIS system architecture and outlines how open-source software tools (e.g. GDAL, PCRaster, flask, docopt, sqlalchemy and more) are used to process the spatio-temporal data sets. We additionally demonstrate use cases from the health researcher's perspective.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
28:24 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Open Data Revolution of the Deutsche Bahn (German Railways)

Deutsche Bahn (German Railways), one of the world-leading passenger and logistics company is long-known to be very closed and conservative. Therefore, for many it was a complete surprize when Deutsche Bahn has announced the DB Open Data Portal in Novemeber 2015 and started publishing datasets under very permissive Creative Commons licenses. These datasets include geodata like stops, stations, complete railway track network and many others, growing almost weekly. DB Open Data is now extended by DB Open APIs like timetable of the long-distance trains. In this talk, we tell the story behind DB Open Data. About our challenges and failures, our successes and lessons learned on the way to become more open, to enable and to be enabled by the community. We show projects which were already implemented using our Open Data and point out to boundaries we still have to break.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:47 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

OpenSource tools for water network management

This presentation details some OpenSource tools dedicated to water network management, be it for water distribution or wastewater networks. The qWAT project is a specific tool based on QGIS and PostGIS. it aims at managing water distribution networks. The data model is part of the project and covers most use cases for this kind of assets. The qWAT project is strongly linked to QGIS, and tries to contribute to the core of QGIS so as to mutualize developments and features among other QGIS-based applications. Similarly, the QGEP project is dedicated to wastewater networks. We also present a use case for an implementation of a wastewater information system in France, based on QGIS and PostGIS. Furthermore, we show how PostGIS-based projects allow to do network and graph analysis, so as to extract meaningful information for decision-taking and planning. QGIS-Epanet and QGIS-SWMM are two QGIS Processing extensions integrating simulation features on water distribution and wastewater networks. They let the user run simulations to analyze the network, dimensioning, and identify specific issues. These set of tools show that OpenSource GIS now tend to fulfill use cases for specific fields of application, and water management is among them.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:30 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

The secret story of real time routing told by OpenStreetMap, pgRouting and OpenLayers

OSRM has rapidly become the solution of choice for open-source routing. However, probably its single most important drawback is the requirement to rebuild a significant part of the routing graph whenever something changes in the street network. An open source solution able to exploit dynamic networks seamlessly does already exist: pgRouting. We have developed a tool that allows loading an OpenStreetMap dump directly into the format required by pgRouting. In order to take advantage of the new turn-restriction shortest path algorithm, the tool also converts all possible restrictions in the appropriate format, while migration from OSRM was streamlined by using a very similar configuration file. To illustrate the advantages of dynamic networks we also built a simple OpenLayers 3 tool that allows the user to define blockage zones and determine optimal routes avoiding them. Furthermore, in order to provide a fully open-source routing suite, we developed an OL3 tool, along with the support backend functions, that enable the calculation of much more realistic drive-time polygons (when compared with the current capabilities of pgRouting). Daniel Urda (Teamnet Solutions International ) Florin Iosub (Teamnet Solutions International)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:26 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Global Forest Watch: Using Open Data to Save the World’s Forests

Global Forest Watch (GFW) is an interactive online forest monitoring platform designed to empower people everywhere with the information they need to better manage and conserve forest landscapes. Thanks to open data, GFW is able to do the following: Monitor when and where forests are changing. NASA’s freely available Landsat and MODIS data has allowed hundreds of scientists and researchers to develop innovative solutions to monitor landscape changes. Algorithms are now used to process and analyze this remotely-sensed data to show when and where forests are changing with surprising precision and speed. Understand why forests are changing. Open data showing boundaries of land allocated for specific purposes, such as commodity production and conservation, as well as land management, allows us to understand why forests are changing. Are trees being cleared for palm oil? Are certain swaths of forests still standing because they are managed by indigenous groups? Gauge the significance of deforestation. Additional open data provided by research institutions, governments, and others is used to understand the implications of deforestation on biodiversity, climate change, and provision of ecosystem services. For example, was a recently clear-cut area of forest home to endangered species? Was it a carbon rich primary forest? Spark further innovation. GFW’s open-source code and APIs allow others to leverage GFW’s analysis tools and open data to create additional forest monitoring and management tools.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
27:10 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Shortest Path search in your Database and more with pgRouting

pgRouting extends the PostGIS / PostgreSQL geospatial database to provide shortest path search and other network analysis functionality. This presentation will show the inside and current state of the pgRouting development, from its wide range of shortest path search algorithms to driving distance calculation or “Traveling Sales Person” (TSP) optimization. Additionally we will give a brief outlook and introduction of upcoming new features like the “Vehicle Routing Problem” (VRP) solver, and what we have in mind for future releases. We will explain the shortest path search in real road networks and how the data structure is important to get better routing results. Furthermore we will show how you can improve the quality of the search with dynamic costs and make the result look closer to the reality. You will also learn about difficulties and limitations of the library, and when pgRouting might not be not the right tool to solve your routing problem.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
20:32 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

500+ Billion Points: Organizing Point Clouds as Infrastructure

Massive point cloud data collections present unique processing challenges. The first roadblock in providing large scale point cloud web services is data organization. We will describe the techniques used in the open source Entwine library for indexing and organizing province-scale LiDAR collections for delivery as streaming web services. We will describe how the software organizes point cloud data, demonstrate its use in providing web service infrastructure, and discuss future integration possibilities of Entwine with other point cloud softwares.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
28:24 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Open Source strategies in a federal office - migrating from closed software to OS development

On of the task areas of the German Federal Office for radiation protection (BfS) in an case of a radiological emergency is to collect available and capture own relevant data, process and evaluate these and create documents including the necessary information to enable the crisis unit to make the right decisions for emergency preparedness and response. Some time ago, the BfS started to migrate from a proprietary monolithic system to an approach combining several OSGeo projects into a whole emergency system, including PostGIS, GeoExt, OpenLayers3, Geoserver, GeoNetwork and MapfishPrint and other software even from non-Geo but Open Source projects. To fill missing links between software components and to meet all demands of radiological disaster management, the BfS does not only use Open Source GIS software, but started several own software projects using free licenses as well. To seriously follow the Open Source strategy the BfS started to publish some of its projects using GitHub as a commonly used platform for Open Source projects, but not a common way for a federal office. The talk presents GitHub-driven Open Source projects of the BfS embedded in an OS driven software stack using several well known OSGeo projects.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:19 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Creating Stunning Maps in GeoServer: mastering SLD and CSS styles

Various software can style maps and generate a proper SLD document for OGC compliant WMS like GeoServer to use. However, in most occasions, the styling allowed by the graphical tools is pretty limited and not good enough to achieve good looking, readable and efficient cartographic output. For those that like to write their own styles CSS also represents a nice alternatives thanks to its compactness and expressiveness. Several topics will be covered, providing examples in both SLD and CSS for each, including: mastering 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 to generate good looking point thematic maps, using the full power of GeoServer label lay-outing tools to build pleasant, informative maps on both point, polygon and line layers, including adding road plates around labels, leverage the labeling subsystem conflict resolution engine to avoid overlaps in stand alone point symbology, blending charts into a map, dynamically transform data during rendering to get more explicative maps without the need to pre-process a large amount of views. The presentation aims to provide the attendees with enough information to master SLD/CSS documents and most of GeoServer extensions to generate appealing, informative, readable maps that can be quickly rendered on screen. Andrea Aime (GeoSolutions)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
21:33 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Digital field mapping with Geopaparazzi and gvSIG

Geopaparazzi is an application for fast field surveys. Its simplicity and the possibility to use it on as good as any android smartphone makes it a trusty field companion for engineers and geologists, but also for tourists who wish to keep a geodiary and any user that needs to be aware of his position even in offline mode. In Geopaparazzi it is possible to create text and picture notes and place them on the map. Notes can also be complex and form based in order to standardize surveys in which many people need to be coordinated. The data collected in the field can be directly exported from Geopaparazzi as KMZ or GPX. The plugin for Geopaparazzi in gvSIG supplies an userfriendly GUI with GIS functionalities to visualize all the data collected in the field, GPS tracks, text notes, pictures and form based notes and gives the possibility to save them as shapefiles. It works as a useful and fast tool to check the data collected in the field within a GIS directly from the file of the Geopaparazzi project without the need to export and save different shapefile. With this tool it is also possible to share projects with others, check the contents and periodically verify the results of the surveys.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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Version

AV-Portal 3.8.0 (dec2fe8b0ce2e718d55d6f23ab68f0b2424a1f3f)