Using Web Standards to create Interactive Data Visualizations for the Web
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This document discusses using web standards to create interactive data visualizations for the web. It provides an overview of the JavaScript InfoVis Toolkit, which allows creating multiple graph and tree layouts using web standards and JavaScript. It also discusses upcoming improvements to browser engines and JavaScript that will further improve performance of interactive visualizations. Finally, it introduces WebGL and V8-GL as emerging web standards that bring hardware-accelerated 3D graphics to the web through JavaScript.
Using Web Standards to create Interactive Data Visualizations for the Web
- 1. Using Web Standards to create Interactive Data Visualizations for the Web Nicolas Garcia Belmonte - Dec. 2009
- 2. Agenda • JavaScript InfoVis Toolkit Overview • Web Standards, JavaScript and Graphics • What’s next for the JIT (v. 1.2) • What’s next for Web Standards (WebGL) • Introducing V8-GL
- 3. JavaScript InfoVis Toolkit • Web Based Interactive Data Visualizations • Multiple Graph/Tree Layouts • Modular, Extensible, Composable • Web Standards Based
- 5. Modular Grab only what you need HyperTree SunBurst TreeMap JavaScript InfoVis ForceDirected Toolkit RGraph Icicle SpaceTree
- 6. Extensible • Define custom Nodes and Edges • Add Custom Animations (linear, Elastic, etc.)
- 7. Composable Add Visualizations as Node/Edge rendering functions to other visualizations
- 9. Web Standards JavaScript • Dynamic, Expressive, Powerful • Support in all Browsers • Large Community
- 10. Web Standards JavaScript: Language Features • Dynamic • Weakly typed • Differential Inheritance • First-class Functions • Object Mutability • Booleans as Defaults • etc.
- 11. Web Standards JavaScript: 100% Faster SunSpider runs per minute 65.00 48.75 32.50 16.25 0 WebKit 3.0 WebKit 3.1 SquirrelFish SquirrelFish X Source: http://webkit.org/blog/214/introducing-squirrelfish-extreme/
- 12. Web Standards Everybody wants to make JavaScript Faster • Apple Safari - SquirrelFish Extreme • Mozilla Firefox - TraceMonkey • Google Chrome - V8 • Opera - Carakan
- 13. Web Standards HTML Document
- 14. Web Standards HTML5 Header • Audio Nav • Video Form • Drag n Drop Section • Canvas Image • Storage Footer • etc.
- 15. Web Standards CSS3 Header • Gradients Nav • Text Effects Section Form • Transforms Image • Animations • etc. Footer
- 16. Canvas “A Scriptable Image Tag”
- 17. Canvas Initialization <canvas id=”tutorial” width=500 height=500></canvas> var canvas = document.getElementById(“tutorial”); var ctx = canvas.getContext(“2d”);
- 18. Canvas Drawing Shapes ctx.fillStyle = “rgb(200, 0, 0)”; ctx.fillRect(10, 10, 55, 50); ctx.fillStyle = “rgba(0, 0, 200, 0.5)”; ctx.fillRect(30, 30, 55, 50);
- 19. Canvas Benefits Weak Points Good Performance No notion of elements Simple API Code gets too verbose
- 20. Why JS + Canvas? • Native Browser Technologies • Seamless Integration • High Interoperability • No third-party libraries • Access to a large community
- 21. JavaScript InfoVis Toolkit Applications Visualizing Linux Package Dependencies Source: http://demos.thejit.org/example/rgraph/example1/
- 22. JavaScript InfoVis Toolkit Applications Visualizing Artist-Band Relationships Source: http://demos.thejit.org/example/hypertree/example1/
- 23. JavaScript InfoVis Toolkit Applications Some (public) user Applications CRS Management UI ROOT project at CERN Project at Macalester College Game Stats at Dystopia Neural Network Visualization
- 24. What’s next for the JIT? Version 1.2 • SunBurst, Icicle and Force-Directed Visualizations • Mouse Controlled Transforms • And more...
- 25. What’s next for the Web? WebGL Already available in WebKit and Firefox nightlies (*)
- 26. V8-GL Write Hardware Accelerated Desktop Graphics with JS http://github.com/philogb/v8-gl/
- 27. Questions? [email protected] http://blog.thejit.org http://github.com/philogb http://thejit.org