How to visualize the data over Web using Shiny + R

1. R is a free software environment for statistical computing and graphics
2. Excellent for data visualization
3. Very active community
4. ..but..
   • Its a very personal experience
   • Sharing is not easy

1. Turns R analyses into interactive web applications
2. No HTML or JavaScript knowledge is necessary
3. But fully customizable and extensible with HTML/CSS/JavaScript
4. Web UI
5. Uses “reactive” programming model
6. Free and Open Source (GPL-3)

1. Create a directory for the app
2. Create two file in that directory
   • ui.R – defines user interface
   • server.R – specifies the logic behind user interface

library(shiny)

shinyUI(pageWithSidebar(
  headerPanel('District Wise Rural Health Care Infrastructure'),
  sidebarPanel(
    selectInput("dataset", "Choose a States/Union Territory:",
                choices = states),
    selectInput("center", "Choose a center:",
                choices = centers ),

    downloadButton('downloadData', 'Download')
  ),
  mainPanel(
    plotOutput('plot'),
    tableOutput('table')
  )
))

shinyServer(function(input, output) {
  datasetInput <- reactive({
        state = input$dataset
        center = input$center
        df = read.csv("District_Wise_Rural_HealthCare_Infrastructure.csv")
        sub = subset.data.frame(df, df$States.Union.Territory == state)
        ndf = data.frame(District = sub$Name.of.the.District, Centers = eval(parse(text = paste0("sub$",center))))
  })

  output$table <- renderTable({
    datasetInput()
  })
})

• District-Wise Availability Of Health Centres In India as of March 2011

• Data Source

  • data.gov.in
  • The number of state-wise and district-wise availability of Sub-Centres, Primary Health Centres, Community Health Centres, Sub Divisional Hospitals and District hospitals In India.
  • http://data.gov.in/dataset/district-wise-availability-health-centres-india-march-2011

• Running from self-hosted Shiny Server

  • http://localhost:3838/demo1/

• Running from RStudio-hosted Shiny Server

  • install.packages('shiny')
  • shiny::runGist('5835958')

• Enrolment for Ph D/M.phil across India between 2001-09

• Data Source

  • data.gov.in
  • Enrolment In Higher Education According To Faculty And Stage (All India And State wise)
  • http://data.gov.in/dataset/enrolment-higher-education-according-faculty-and-stage-all-india-and-state-wise

• Running from self-hosted Shiny Server

  • http://localhost:3838/demo2/

• Running from RStudio-hosted Shiny Server

  • install.packages('shiny')
  • shiny::runGist('5836010')

1. Deploy is locally
   • R package itself is not designed for web deployments
2. Self-hosted Shiny Server
   • https://github.com/rstudio/shiny-server
3. RStudio-hosted Shiny Server

• http://www.r-project.org/
• http://www.rstudio.com/shiny/
• http://joecheng.com/R/SeattleMay2013/assets/fallback/index.html\