Web Application Development with R Using Shiny（Third Edition）

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Summary

SQL Injection

Database using Dplyr DBI and POOL

Persistent data storage

Temporary data input/output

Scoping loading and reusing data in Shiny applications

Running Shiny app on Amazon AWS

Shiny server

Shinyapps.io without RStudio

Shinyapps.io

Sharing with the world

Sharing using .zip and .tar

Sharing applications using Git

Projects in RStudio (h3)

Using Git and GitHub within Rstudio

An introduction to Git

Sharing over GitHub

Persistent Storage and Sharing Shiny Applications

Summary

Debounce and throttle

Profiling R code

Handling missing input with req()

Validate

Handling errors (including validate() and req())

Debugging

Shinytest

Functions and modules

Event-handling using observeEvent and eventReactive

Running reactive functions over time (execution scheduling)

Controlling specific input with the isolate() function

A closer look at reactivity

Reactivity in RShiny

Code Patterns in Shiny Applications

Summary

Adding a password

Shiny gadgets

Linking interactive widgets

Cell Selection

Column selection

Row selection

Interactive tables

Interactive plots

Bookmarking by saving the state to the server

Multiple-file application

Single-file application

Encoding the state into a URL

Bookmarking state

Bookmarking

Downloading and uploading data

Downloadable reports with knitr

Downloading graphics and reports

Custom interfaces from GET strings

Reading client information and GET requests in Shiny

Animation

Power Shiny

Summary

ui.R

Resizing the Google chart

Google Charts gauge

ui.R

Info boxes

Notifications

Full dashboard

ui.R

Using the grid layout

Using shinythemes

Adding icons to your UI

Sidebar application with extra styling

Flexdashboards

Applications in this chapter

Dashboards

Summary

threejs

d3heatmap

rCharts

Dygraphs

htmlwidgets

Responding to events in JavaScript

JavaScript

server.R

ui.R

Extendshinyjs

Shinyjs

dropdownDepend.js

server.R

ui.R

Example 2 – sending messages between client and server

appendText.js

ui.R

Example 1 – reading and writing the DOM

JavaScript and Shiny

Easy JavaScript and Custom JavaScript Functions

Summary

Alternative Shiny designs

Modals

Progress bar with shinycssloaders

Progress bars

The reactive user interface example – ui.R

The reactive user interface example – server.R

Reactive user interfaces

Beautiful tables with DataTable

Naming tabPanel elements

Streamlining the UI by hiding elements

Combining layout functions

Do it yourself

Complete

Simple

Shiny's layout functions

Mastering Shiny's UI Functions

Summary

Bootstrap 3 and Shiny

Debugging

Exercise

Take a step back and rewind

ui.R

Defining code in the ui.R file

ui.R and template.html

server.R

Inline template code

HTML templates

Including a Shiny app on a web page

server.R

index.html

A minimal HTML interface

server.R

ui.R

Custom HTML links in Shiny

Shiny and HTML

Running the applications and code

Integrating Shiny with HTML

Summary

Advanced layout features

A map using leaflet

Trend graphs

Text summary

Outputs

Reactive objects

Data processing

The UI

The Gapminder application

Widget types

Embedding applications in documents

An optional exercise

The program structure

The server.R of the minimal example

The finished interface

A note on HTML helper functions

The ui.R of the minimal example

A minimal example of a full Shiny application

Interactive Shiny documents in RMarkdown

Types of Shiny application

Shiny First Steps

Summary

Installing Shiny and running the examples

A simple Shiny-enabled line plot

Gapminder

Ceci n'est pas une pipe

Introduction to the tidyverse

Line chart

Bar chart

Base graphics and ggplot2

Objects

Functions

Variable types

Dataframes lists arrays and matrices

Data types and structures

Loading data

Getting help

Learning R

Code editors and IDEs

The R console

Installing R

Beginning R and Shiny

Reviews

Get in touch

Conventions used

Download the color images

Download the example code files

To get the most out of this book

What this book covers

Who this book is for

Preface

Packt is searching for authors like you

About the reviewer

About the authors

Contributors

Packt.com

Why subscribe?

www.PacktPub.com

Web Application Development with R Using Shiny Third Edition

Copyright and Credits

Title Page

封面

封面

Title Page

Copyright and Credits

Web Application Development with R Using Shiny Third Edition

www.PacktPub.com

Why subscribe?

Packt.com

Contributors

About the authors

About the reviewer

Packt is searching for authors like you

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Download the color images

Conventions used

Get in touch

Reviews

Beginning R and Shiny

Installing R

The R console

Code editors and IDEs

Learning R

Getting help

Loading data

Data types and structures

Dataframes lists arrays and matrices

Variable types

Functions

Objects

Base graphics and ggplot2

Bar chart

Line chart

Introduction to the tidyverse

Ceci n'est pas une pipe

Gapminder

A simple Shiny-enabled line plot

Installing Shiny and running the examples

Summary

Shiny First Steps

Types of Shiny application

Interactive Shiny documents in RMarkdown

A minimal example of a full Shiny application

The ui.R of the minimal example

A note on HTML helper functions

The finished interface

The server.R of the minimal example

The program structure

An optional exercise

Embedding applications in documents

Widget types

The Gapminder application

The UI

Data processing

Reactive objects

Outputs

Text summary

Trend graphs

A map using leaflet

Advanced layout features

Summary

Integrating Shiny with HTML

Running the applications and code

Shiny and HTML

Custom HTML links in Shiny

ui.R

server.R

A minimal HTML interface

index.html

server.R

Including a Shiny app on a web page

HTML templates

Inline template code

server.R

ui.R and template.html

Defining code in the ui.R file

ui.R

Take a step back and rewind

Exercise

Debugging

Bootstrap 3 and Shiny

Summary

Mastering Shiny's UI Functions

Shiny's layout functions

Simple

Complete

Do it yourself

Combining layout functions

Streamlining the UI by hiding elements

Naming tabPanel elements

Beautiful tables with DataTable

Reactive user interfaces

The reactive user interface example – server.R

The reactive user interface example – ui.R

Progress bars

Progress bar with shinycssloaders

Modals

Alternative Shiny designs

Summary

Easy JavaScript and Custom JavaScript Functions

JavaScript and Shiny

Example 1 – reading and writing the DOM

ui.R

appendText.js

Example 2 – sending messages between client and server

ui.R

server.R

dropdownDepend.js

Shinyjs

Extendshinyjs

ui.R

server.R

JavaScript

Responding to events in JavaScript

htmlwidgets

Dygraphs

rCharts

d3heatmap

threejs

Summary

Dashboards

Applications in this chapter

Flexdashboards

Sidebar application with extra styling

Adding icons to your UI

Using shinythemes

Using the grid layout

ui.R

Full dashboard

Notifications

Info boxes

ui.R

Google Charts gauge

Resizing the Google chart

ui.R

Summary

Power Shiny

Animation

Reading client information and GET requests in Shiny

Custom interfaces from GET strings

Downloading graphics and reports

Downloadable reports with knitr

Downloading and uploading data

Bookmarking

Bookmarking state

Encoding the state into a URL

Single-file application

Multiple-file application

Bookmarking by saving the state to the server

Interactive plots

Interactive tables

Row selection

Column selection

Cell Selection

Linking interactive widgets

Shiny gadgets

Adding a password

Summary

Code Patterns in Shiny Applications

Reactivity in RShiny

A closer look at reactivity

Controlling specific input with the isolate() function

Running reactive functions over time (execution scheduling)

Event-handling using observeEvent and eventReactive

Functions and modules

Shinytest

Debugging

Handling errors (including validate() and req())

Validate

Handling missing input with req()

Profiling R code

Debounce and throttle

Summary

Persistent Storage and Sharing Shiny Applications

Sharing over GitHub

An introduction to Git

Using Git and GitHub within Rstudio

Projects in RStudio (h3)

Sharing applications using Git

Sharing using .zip and .tar

Sharing with the world

Shinyapps.io

Shinyapps.io without RStudio

Shiny server

Running Shiny app on Amazon AWS

Scoping loading and reusing data in Shiny applications

Temporary data input/output

Persistent data storage

Database using Dplyr DBI and POOL

SQL Injection

Summary

Other Books You May Enjoy