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29:48 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2014
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Running Your Own Rendering Infrastructure

In addition to hosting the popular OSM-base Toner, Watercolor, and Terrain tile sets, Stamen incorporates custom cartography into much of our client work. This is a behind-the-scenes walkthrough covering the evolution of our rendering infrastructure and the peripheral services that help to make our work unique. Topics covered include the image processing used for Watercolor and Map Stack, raster manipulation for Terrain, Surging Seas, and the Chesapeake Bay Program, as well as the use of vector tiles (for both OSM and other data) to support Pinterest and future work.
  • Published: 2014
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:37 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2014
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Client-side versus server-side geoprocessing: Benchmarking the performance of web browsers processing geospatial data using common GIS operations.

Are web browsers ready to handle a larger portion of the processing load in our GIS applications? Web-based GIS and mapping applications are traditionally based on a client-server model, where most of the data processing work is placed on the server. This study examines what happens when that processing load is shifted to the client, using JavaScript to process geospatial data with GIS operations directly in the browser.The time needed to complete common GIS tasks using the JavaScript library JSTS Topology Suite were benchmarked in popular web browsers including Chrome, Firefox, Internet Explorer, Opera, and Safari. The GIS operations buffer, union, and Voronoi diagram were tested with a suite of points, lines, and polygons ranging in size from 10 up to 100,000 vertices. The testing platforms included Windows, Mac, and Linux desktops and laptops.The same geoprocessing tests were conducted on a cloud-based Linux server using the Java library JTS Topology Suite as a performance comparison of server-side processing applications. The various testing configurations were then analyzed to see how browsers stack up to the performance of traditional client-server applications.
  • Published: 2014
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
14:08 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2014
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A jumpstart for your mobile map app

Would you like to get started programming mobile mapping applications? There's a lot to keep in mind: a responsive layout, a mapping framework, positioning of controls and buttons, offline caching of tiles, and finally compiling it all into a mobile app.This presentation walks you through some problems and solutions, culminating in MobileMapStarter. Techniques discussed include jQuery Mobile, Leaflet, and PhoneGap/Cordova.
  • Published: 2014
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
25:20 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2014
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Tracking Slippy Map Analytics

Google Analytics is a great tool for monitoring and reporting on website traffic and user interactions but what it doesn't tell you is that 75% of the time your user's zoom in two levels every time they start to use your map or that external soils layer you added is taking an average three seconds to load. Client side map monitoring adds the missing chapters needed to complete your geo-analytics storybook.We'll briefly walk-through how to setup your slippy map to start tracking analytics, what can be tracked, and what can be discovered.
  • Published: 2014
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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