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24:22 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Jsonix: Talking to OGC Web Services in JSON

Can you talk to OGC Web Services in JSON instead of XML? You can - with Jsonix, a powerful JavaScript tool for XML - JSON conversion. JSON has probably already replaced XML as a "lingua franca". JSON is much lighter and easier to use than XML, especially in JavaScript-based web apps. In the context of GIS, web mapping is dominated by JavaScript libraries like OpenLayers and Leaflet, which speak JSON natively. But what about the standards? Open Geospatial Consortium defines more than 50 specifications with more than 100 individual versions. Technically almost all of them are XML-based and defined by XML schemas. These are de jure and de facto standards, widely used and well supported. So you still need XML processing in JS web mapping apps. Processing XML is no rocket science, but it's seldom a pleasure to implement. The OL3 KML parser is about 2.5KLoc of dense XML parsing. Even a very simple WMS GetCapabilities format is almost 1 KLOC. From this code around 90% is pure XML parsing and only 10% is the processing of the payload. Would not it be nice if we could talk to the OGC Web Services directly in JSON? So that the developers could focus on the 10%, the payload processing, and cut off the 90% (XML handling) of the effort. Jsonix is an open source library for XML - JS conversion which makes it just possible. With Jsonix you can take an XML Schema and generate XML - JS mappings. These mappings allow you to parse XML in the original schema and get your data in pretty JSON. It also works in the opposite direction: you can serialize JSON in XML, which would correspond to the original XML Schema. What makes Jsonix unique is that it is type and structure-safe. On the JSON side, you will get types and structures exactly as they are defined in the original XML Schema. For instance, xs:decimal is converted into a number in number in JSON, repeatable elements are represented by arrays etc. You just need the corresponding mapping. You can generate Jsonix mappings on your own or use one of the pre-generated mappings. The (unofficial) OGC Schemas Project compiles and provides mappings for many of the popular OGC schemas (OWS, WMS, WFS, CSW, SLD and many more). This presentation gives an overview of Jsonix demonstrates its usage by a number of examples.
  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
22:49 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Temporal Maps leading to new views in Spatial Analysis

Cloud-based mapping technologies are changing the way that the world interacts with GIS. Technologies that allow for aggregate querying of data that is both geospatial and temporal presents unique challenges and fruitful lines of inquiry. At CartoDB, we are pushing ahead with new ways of looking at spatio-temporal data visualization--which we have named Torque--, with intriguing results for both scientists and journalists. In this session, we will present use cases that offer unique ways of looking at data. We will also present challenges that lie ahead with our unique technology. My background in mathematical physics studying timeseries analysis has led to interesting insights and crossovers with the developers/hackers that originated the underlying technology. I hope to present the many lessons we've learned from Torque.
  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
03:32 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

FOSS4G Seoul 2015 - Welcome Address 1

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
02:24 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Welcome Address 2 FOSS4G IN Korea:Challanges & Strategies

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
19:28 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

A simple way to create a web infographic map: For public data and private data

Create a infographic maps and can be shared on the web, we will introduce the Pinogio. Just a few clicks complex analysis function through Pinogio, it is possible to make a web map of high quality. Pinogio consists of a Geotools, GeoServer, OL3, including open source-based architecture. Do not store anymore geospatial data in local storage, create a beautiful maps from public cloud environment.
  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:54 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Keynote Lecture 2: FOSS4G FOR THE 5PS

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
24:26 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Keynote Lecture 5: Where do we go from here? The next 10 years of open source geospatial

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
28:23 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Building an OpenLayers 3 map viewer with React

Facebook's React is a rising star in the crowded JavaScript ecosystem. It is not a Model-View-Controller framework, it is actually the V in MVC. Encapsulated components promise more code reuse, easy testing and separation of concerns. This talk introduces React and shows the architecture of an OpenLayers 3 based map viewer using React components.
  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
23:56 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

How Simplicity Will Save GIS

t’s 2014 — we have consumer robots and electric cars, private spacecraft, planet colonization projects, and the Higgs Boson is confirmed, but GIS software is still a mess. You might be able to make sense of it all if you’re a GIS specialist with an academic background, but other creative individuals — designers, developers, tinkerers of all kinds, each with a vision and desire to create meaningful and beautiful maps and visualizations — are constantly losing battles against bloat, clutter, and complexity. How do we reverse this GIS entropy? What does it take to turn complex technology into something that anyone can use and contribute to? An attempt to answer by the creator of Leaflet, a simple JS library that changed the world of online maps forever.
  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
14:06 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Lightning Talk 2 Point cloud: The Musical

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
03:59 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2015

Opening & Logistics Info

  • Published: 2015
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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