Shiny - January 2015 LA R Users Group

http://www.meetup.com/Los-Angeles-R-Users-Group-Data-Science/events/218802758/

Transcript

1. Shiny
   LA R Users Group
   January 20, 2015
   Joe Cheng
   https://speakerdeck.com/jcheng5/shiny-january-2015-la-r-users-group
   

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2. About me
   • Software engineer at RStudio, Inc.
   • Shiny creator and now co-maintainer (along with
   Winston Chang and Yihui Xie)
   • Building websites since 1995
   • Almost no stats background
   

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3. Motivation
   R is a powerful platform for data analysis
   • State of the art statistical power
   • Excellent for visualization
   • Large and enthusiastic community
   

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4. Motivation
   But…
   • A personal experience, not a shared one
   • Output is usually in static formats
   • Modern visualization is interactive, browser-
   based
   

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5. What is Shiny?
   • Interactive web applications around your R
   analyses
   • Zero HTML/CSS/JavaScript knowledge is
   required…
   • …but fully customizable and extensible with
   HTML/CSS/JavaScript
   

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6. What is Shiny?
   • Modern web UI with attractive defaults, but also
   infinitely customizable
   • Designed to integrate with existing JavaScript
   libraries
   • Uses a reactive programming model which
   allows dramatically simpler code than traditional
   UI or web programming
   

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7. Demo

   Hello World
   

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8. Demo

   http://shiny.rstudio.com/gallery
   

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9. Can R do ____?
   • "It's possible, but never been done before."
   • "Try this snippet I found on GitHub / r-bloggers /
   Stack Overflow / Google groups / r-help."
   • "Use one of these six CRAN packages (two of
   which are by Hadley)."
   

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10. Photo credits
    Rainforest https://flic.kr/p/nSBona

    Road https://flic.kr/p/grKyM3

    Interstate https://flic.kr/p/dn3sRW
    

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11. Can Shiny do ____?
    • Jungle: "It's possible, if you know JavaScript."
    • Road: "Try this snippet from GitHub / r-bloggers /
    Stack Overflow / google groups / r-help."
    • Interstate: "Use this package." / "That's a built-in
    feature of Shiny."
    

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12. Recent work
    • Encourage community development of high-
    quality R packages for JavaScript libraries and
    D3 visualizations (htmlwidgets)
    • Build our own widget packages for high-impact
    JavaScript libraries (leaflet, dygraphs, DT)
    • Lower the expertise bar for making great looking
    apps (shinythemes, shinydashboard)
    

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13. Demo
    https://jcheng.shinyapps.io/crandash
    Source: https://github.com/jcheng5/crandash
    

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14. Demo
    http://rstudio.github.io/shinydashboard/
    examples.html
    

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15. Next steps
    • Get inspired. http://shiny.rstudio.com/gallery
    • Get started. http://shiny.rstudio.com/tutorial
    • Go deeper. http://shiny.rstudio.com/articles
    • Need help? Google "shiny-discuss"
    

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