FOSS4G North America Conference 2013 Preliminary Program

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When NASA World Wind meets MapServer Daniel Morissette, MapGears and Jeff McKennna, Gateway Geomatics A year ago the NASA World Wind team made the decision to replace their server backend with MapServer, and some members of the NASA World Wind and MapServer teams have worked together on this migration since then. In this talk we will discuss the rationale behind this decision, go over the highlights and challenges of this migration project, and the added value for existing World Wind users such as OpenStreetMap support for instance. We will also provide pointers to resources and hints for those who want to deploy their own open source 3D globe infrastructure based on World Wind and MapServer. ProjFinder Yo! Aaron Racicot, ZPulley Inc. and Greg Corradini, Chop Shop Geo Have you ever received a dataset and not known what projection the geodata is in? Download a CSV full of “x” and “y” and have no idea how to determine if they are UTM, State Plane, or some other obscure projection? We are here to help! CUGOS (Cascadia Users of Geospatial Open Source), a very active OSGeo regional chapter, has been hacking on a project to help solve this problem. We have been sponsoring hack sessions and using this project as a learning tool for CUGOS members to engage in Open Source Geospatial software development. Give us a sample of your unknown data (an x and y from your dataset) and a hint as to where you think it is (i.e. you know the data is related to “Seattle WA”) and we will give you back a list of probable projections. There are interesting cases at all scales, with capabilities to get you "close" at large scales, and distinguish datum differences at very small scales. We use some simple techniques leveraging the EPSG database, PostGIS, and a simple web map interface to make the user experience as easy as possible. All of the project source code is available on Github and we are using a great list of Open Source projects to make ProjFinder work including Flask, PostGIS and Openlayers. We are hosting the client app on gitpages, and the API on a small Linode, once again showing that big things can be accomplished with scarce resources. We will be introducing the concept, showing ProjFinder in action, and talking about using projects like this to engage your local community around Open Source Geospatial. Hopefully you will leave inspired to come hack ProjFinder with us and engage your local community in developing similar learning opportunities.
Javascript High Performance Data Visualizations in JavaScript Vladimir Agafonkin, Universal Mind If you thought that building rich, interactive and mobilefriendly visualizations of high volume data with 100,000+ points just using the power of browserside JavaScript was impossible, this talk will prove you wrong. We’ll review every important aspect of achieving peak performance and responsiveness for these types of applications; including realtime data simplification, computational geometry, clustering algorithms, tree structures, fast collision detection, typed arrays, UTFGrid, TopoJSON, Web Workers, CSS Transform Transitions, requestAnimationFrame and mixing Canvas with SVG and HTML. Going Inside with <strong>FOSS4G</strong> Developing Interactive Building Floor Plans in HTML5 Kristofor Carle, SYNCADD Systems, Inc. We will show how we use tools such as D3.js and Leaflet to build interactive floor plan applications. Most floor plans you find on the web are either simple image maps, custom Flash applications, or are recreated as GIS data. We are developing an open data standard for SVGbased floor plans along with a JavaScript library that makes it easier to use SVG data exported from CAD/BIM software. This allows us to build smart web applications with accurate data that can be displayed inside a map bringing <strong>FOSS4G</strong> inside the building. Cesium: 3D Maps on the Web Patrick Cozzi, Analytical Graphics, Inc With WebGL, it is now possible to have hardwareaccelerated 3D maps in a web browser without a plugin. In this talk, we present Cesium, an opensource JavaScript library for 3D web maps. In addition to being a standalone library, Cesium provides 3D for OpenLayers 3. With live demos, we show Cesium’s major geospatial features including highresolution globalscale terrain, map layers, and vector data; support for open standards such as WMS, TMS, and KML; and smooth 3D camera control. In addition, we show Cesium’s firstclass support for temporal georeferenced data with CZML. We also discuss our opensource development culture, our experience with github, and development tools for automated testing and optimizing deployment.
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FOSS4G North America Conference 2013 Preliminary Program

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