Shiny

Preliminary

The following is what we see on a browser after we run an example from shiny package. See http://rstudio.github.com/shiny/tutorial/#hello-shiny. Note that the R session needs to be on; i.e. R command prompt will not be returned unless we press Ctrl+C or ESC.

More shiny examples can be found on https://github.com/rstudio/shiny-examples shiny-examples.

shiny depends on websockets, caTools, bitops, digest packages.

Q & A:

• Tutorial: http://wch.github.io/shiny/tutorial/
• Layout: http://shiny.rstudio.com/articles/layout-guide.html
• Q: If we run runExample('01_hello') in Rserve from an R client, we can continue our work in R client without losing the functionality of the GUI from shiny. Question: how do we kill the job?
• If I run the example "01_hello", the browser only shows the control but not graph on Firefox? A: Use Chrome or Opera as the default browser.
• Q: How difficult to put the code in Gist:github? A: Just create an account. Do not even need to create a repository. Just go to http://gist.github.com and create a new gist. The new gist can be secret or public. A secret gist can not be edited again after it is created although it works fine when it was used in runGist() function.

Resources

• Mastering shiny Hadley Wickham
• Interactive web-based data visualization with R, plotly, and shiny Carson Sievert 2019
• Shiny Production with AWS Book by Matt Dancho
• The Best Resources for Learning Shiny App Development
• Top 7 Best R Shiny Books and Courses That Are Completely Free

Deploy to run locally

Run Shiny Apps Locally 2021

Follow the instruction here, we can do as following (Tested on Windows OS)

1. Create a desktop shortcut with target "C:\Program Files\R\R-3.0.2\bin\R.exe" -e "shiny::runExample('01_hello')" . We can name the shortcut as we like, e.g. R+shiny
2. Double click the shortcut. The Windows Firewall will be popped up and say it block some features of the program. It does not matter if we choose Allow access or Cancel.
3. Look at the command prompt window (black background console window), it will say something like

   Listening on port 7510

   at the last line of the console.
4. Open your browser (Chrome or Firefox works), and type the address http://localhost:7510. You will see something magic happen.
5. If we don't want to play with it, we can close the browser and close the command console (hit 'x')too.

rmarkdown::run() instead of rmarkdown::render()

Use rmarkdown::run("XXX.Rmd") file. If you use the render() function, you will receive an error "Error: path for html_dependency not provided Execution".

RInno

• https://cran.r-project.org/web/packages/RInno/
• https://github.com/ficonsulting/RInno

Installs shiny apps packaged as stand-alone Electron apps using Inno Setup, an open source software that builds installers for Windows programs only.

Deploy on cloud

https://www.r-bloggers.com/deploying-r-rstudio-and-shiny-applications-on-unbuntu-server/

Shiny server series part 1: setting up. It includes setting up A- and CNAME records on DigitalOcean.

Deploy on shinyapps.io

See Getting started with shinyapps.io page and Dashboard page.

Limitations of the free account (5 applications, 25 active hours per month) on shinyapps.io.

How Many Shiny Apps Can You Host for Free?

Deploy to Shinyapps.io from Github Actions

Shinyapps.io can accept google account to sign up. I create an account and a test application/instance on

• https://taichimd.shinyapps.io/stock/ (quantmod, ggplot2, reshape2, magrittr, rvest packages were used)
• https://taichimd.shinyapps.io/tspgov (ggplot2, reshape2, magrittr, rvest, plotly), Performance
• https://taichimd.shinyapps.io/Lasso_Simulation/ Lasso with simulated data
• https://taichimd.shinyapps.io/cran-downloads/ (a backup copy of hadley shiny app). Some packages to test:
  • ggpubr, survminer, GGally, glmnet, survAUC
  • glmnet, SGL, MSGLasso, grplasso, biospear
  • dockerfiler, stevedore, babelwhale, liftr
• Push Button Publishing for Shiny Apps

Note:

1. The R packages our shiny app uses will be automatically downloaded by shinyapps.io service. See the package dependencies section on http://shiny.rstudio.com/articles/shinyapps.html and Using your R packages in the cloud.
2. Default System Packages.
3. Two commands are needed to upload an app: 1. rsconnect() [the full command is copied from account's token page. 2. deployApp() [assume we are in the right working directory].
4. After we run rsconnect() command to deploy our apps, a new subfolder rsconnect will be created under our app folder. I add this folder to .gitignore file.
5. The rsconnect stores account information. If we get the app from another account make sure to delete this subfolder before we run rsconnect::deployApp(); otherwise we will get an error message Error: HTTP 403 .... Forbidden'; see I can't deploy my app with a name that was used in a previous deleted app.
6. For the shiny apps we uploaded to shinyapps.io, we can download them back. The download bundle will also include packrat subfolder (packrat.lock file and desc subfolder). See R packages → packrat for more about packrat.

Shiny server installation

Each app directory needs to be copied to /srv/shiny-server/ (which links to /opt/shiny-server/) directory using sudo.

The default port is 3838. That is, the remote computer can access the website using http://xxx.xxx.x.xx:3838/AppName.

Release

Shiny Server 1.5.16 Update 2021-01-03

Ubuntu & firewall

In my case, I need to modify the firewall to allow traffic through to Shiny Server sudo ufw allow 3838. See How to Set Up Shiny Server on Ubuntu 16.04. The tutorial also covers Securing Shiny Server with a Reverse Proxy and SSL Certificate.

RHEL/CentOS 7

https://www.vultr.com/docs/how-to-install-shiny-server-on-centos-7

Raspberry Pi

• Automatically installing Shiny and RStudio server on Raspberry Pi OS with Ansible 2021-01-13
• http://atceiling.blogspot.com/2017/12/raspberry-pi-r-languager-shiny-server.html

R

sudo nano /etc/apt/sources.list
# deb http://archive.raspbian.org/raspbian/ stretch main 

sudo apt-get update
sudo apt-get install r-base r-base-core r-base-dev

Shiny-server

sudo apt-get install cmake

sudo su - -c "R -e \"install.packages('shiny', repos='http://cran.rstudio.com/')\"" 

git clone https://github.com/rstudio/shiny-server.git
cd shiny-server
mkdir tmp
cd tmp
DIR=`pwd`
PATH=$DIR/../bin:$PATH

PYTHON=`which python`
$PYTHON --version

cmake -DCMAKE_INSTALL_PREFIX=/usr/local -DPYTHON="$PYTHON" ../

make
mkdir ../build
(cd .. && ./bin/npm --python="$PYTHON" install)
(cd .. && ./bin/node ./ext/node/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js --python="$PYTHON" rebuild)

sudo make install

sudo ln -s /usr/local/shiny-server/bin/shiny-server /usr/bin/shiny-server

sudo useradd -r -m shiny

sudo mkdir -p /var/log/shiny-server
sudo mkdir -p /srv/shiny-server
sudo mkdir -p /var/lib/shiny-server
sudo chown shiny /var/log/shiny-server
sudo mkdir -p /etc/shiny-server

cd /etc/shiny-server/
sudo wget http://withr.me/misc/shiny-server.conf

sudo shiny-server

http://192.168.X.XXX:3838

建立 server.R 及 ui.R 程式

cd /srv/shiny-server
mkdir hello_shiny
cd hello_shiny
# 分別建立 server.R 及 ui.R

Running shiny server as non-root: run_as

• https://stackoverflow.com/questions/36201019/run-shiny-server-as-non-root
• https://support.rstudio.com/hc/en-us/articles/219044787-Root-requirements-for-Shiny-Server
• http://docs.rstudio.com/shiny-server/#run_as

Google analytics

https://docs.rstudio.com/shiny-server/#google-analytics

Reverse proxy: Deploy your own shiny server

• http://qualityandinnovation.com/2015/12/09/deploying-your-very-own-shiny-server/
• Set up Apache(Nginx or another webserver) to act as a proxy to Shiny Server
• Setting up RStudio Server, Shiny Server and PostgreSQL
• When used with cloudflare, we should disable HTTP proxy (CDN) and use DNS only.
• How to make your home Shiny or Rstudio Server accessible from the public internet

Shiny https: Securing Shiny Open Source with SSL

• http://ipub.com/shiny-https/
• ShinyProxy
  • SHINYPROXY 1.0.2
  • Securing and monitoring ShinyProxy deployment of R Shiny apps
• https://www.jasperginn.nl/shiny-server-series-pt3/

Securing Shiny Server with Caddy

• Securing Shiny Server with Caddy
• File Transfer Based Publishing for Shiny Apps

Shiny for Python

https://shiny.rstudio.com/py/

How to run an R shiny app

• Building Shiny apps – an interactive tutorial by Dean Attali
• Three ways
  • Click "Run App" in RStudio
  • Call shiny::runApp("~/Directory") in your R console
  • R -e "shiny::runApp('~/shinyapp')" from a terminal
• An example of "app.R". Edit a table via the "DT" package.
• Turn a shiny application into a tablet or desktop app

shinyuieditor

shinyuieditor package

Shiny UI Prototype Builder

designer package

How to Build a Data Analysis App in R Shiny

How to Build a Data Analysis App in R Shiny

Landing page

• We can create an HTML file in /srv/shiny-server directory as the landing page where each app is under a sub-directory.
• R Shiny Apps by Sharon Machlis
• shinyLP package. Bootstrap Landing Home Pages for Shiny Applications
• Host a directory of applications from Shiny Server Professional v1.5.17 Administrator's Guide

The R Shiny packages you need for your web apps

http://enhancedatascience.com/2017/07/10/the-packages-you-need-for-your-r-shiny-application/

Other web apps

Ten simple rules for researchers who want to develop web apps

Shiny + Docker

• See this post. It uses the gui of Docker called Kitematic.
• https://hub.docker.com/r/rocker/shiny/ Don't run R Shiny as a non-root user.
• Shiny Server on Docker: CentOS 7 Edition
• https://github.com/rocker-org/shiny
• https://www.r-bloggers.com/dockerizing-a-shiny-app/
• https://github.com/keberwein/docker_shiny-server_centos7 (Shiny + RStudio servers)
• How To Dockerize ShinyApps + renv package
• Deploying an R Shiny App With Docker
• Running a shiny app in a docker container
• Dockerized Shiny Apps with Dependencies. renv
• Host Shiny Apps with Docker
• Using systemd to Run Shiny Apps
• Running Shiny Server in Docker
• Shiny Apps with Docker Compose, Part 1: Development
• UCSCXenaShiny: An R package for interactively exploring UCSC Xena

Dashboard

• A Dashboard of Shiny Apps
• 4 Tips to Make Your Shiny Dashboard Faster
• Dashboards in R Shiny

shinydashboard

• http://rstudio.github.io/shinydashboard/
• Dashboards made easy
• Using Shiny with Scheduled and Streaming Data

flexdashboard

• The output can be a static HTML file or a dynamic HTML (using shiny, highcharter, viridisLite, ...)
• https://rmarkdown.rstudio.com/flexdashboard/
• Introducing flexdashboards. The gauge component is cool.
• Real example containing gauges https://gallery.shinyapps.io/cran-gauge/
• Automated Dashboard for Classification Neural Network in R
• Automated Dashboard with various correlation visualizations in R
• Speeding up R Plotly web apps - R x Javascript part I

shinyalert: create pretty popup messages (modals) in Shiny

shinyalert

shinyjs

shinyjs

Dash bio for R

Introducing Dash Bio for R

shinytheme

shinythemes 1.1.1

bootstraplib

How to use bootstraplib's Live Theme Previewer to customize Shiny apps?

shiny + databases

• Shiny in Production: App and Database Syncing
• shiny + databases: pool package

tags, hyperlinks

• https://stackoverflow.com/questions/42047422/create-url-hyperlink-in-r-shiny
• Customize your UI with HTML

dates

• https://stackoverflow.com/questions/22834778/r-shiny-daterangeinput-format
• http://www.noamross.net/blog/2014/2/10/using-times-and-dates-in-r---presentation-code.html

websocket

• http://illposed.net/jsm2012.pdf
• https://blog.teamtreehouse.com/an-introduction-to-websockets

CentOS

• https://www.vultr.com/docs/how-to-install-shiny-server-on-centos-7
• https://github.com/rstudio/shiny-server/wiki/CentOS-step-by-step-Installation-Instructions
• http://blog.supstat.com/2014/05/install-rstudio-server-on-centos6-5/

Gallery

• Shiny User Showcase
• Introducing Shiny App Stories
• http://www.showmeshiny.com/
• Example of using googleVis: http://shinyeoda.cloudapp.net/
• Integrate with Javascript: https://github.com/wch/shiny-jsdemo and https://github.com/trestletech/ShinyDash-Sample
• interactiveDisplay (Bioconductor package, there is a STOP Application button too): http://www.bioconductor.org/packages/release/bioc/html/interactiveDisplay.html
• Party vote characteristics at the New Zealand General Election 2014, More things with the New Zealand Election Study
• genSurv : An interactive web-based tool for survival analysis in genomics research. The paper and the source code.
• gene2drug
• Stock
  • http://shiny.rstudio.com/tutorial/written-tutorial/lesson6/
  • Stock Closing Price History.
  • Multiple stocks.
  • google (flash is required, not accurate eg DOW). msn (Nice).
  • yahoo (French only).
  • S&P500 Dashboard, Github source code

Persistent data storage in Shiny apps

http://deanattali.com/blog/shiny-persistent-data-storage/

Conditional input

• conditionalPanel(), selectInput()
• checkboxInput and conditionalPanel in shiny

Upload a file/files

• https://shiny.rstudio.com/articles/upload.html. fileInput(), renderTable(), tableOutput()
• how to upload and access multiple CSV files in R Shiny, source code. renderTable(), renderPrint(), renderUI().
• demo upload a zip file and unzip it to local machine. Source code. observeEvent()
• CASAS: Cancer Survival Analysis Suite, a web based application

Dynamic UI

• Build a dynamic UI that reacts to user input. reactive(), observeEvent()
  • http://wch.github.io/shiny/tutorial/#dynamic-ui
• Dynamically generated user interface components
• Dynamic UI in Shiny (incl. demo app) complicated!
• Youtube
  • R Shiny app tutorial # 13 a - how to use renderUI() and uiOutput() in shiny - Dynamic input widgets
  • (R Shiny Basic App) #8 Dynamically create Drop Down List source code in github. Code is short. reactive(), observe(), selectInput(), updateSelectInput().

Files

shinyFiles

shinyFiles package. This package extends the functionality of shiny by providing an API for client side access to the server file system. As many shiny apps are run locally this is equivalent to accessing the filesystem of the users own computer, without the overhead of copying files to temporary locations that is tied to the use of fileInput().

Password protection

• http://ipub.com/shiny-password-protect/
• https://auth0.com/blog/adding-authentication-to-shiny-server/
• https://www.r-bloggers.com/password-protect-shiny-apps/
• Authentication of Shiny-server Application Using a Simple Method
• Polished is an R package that adds authentication and user administration to your Shiny apps.
  • Adding Firebase Authentication to Shiny, Polished - Modern Authentication for Shiny 2019
  • New Polished Feature - Email Templates 2020

Install all required R packages

http://padamson.github.io/r/shiny/2016/03/13/install-required-r-packages.html

Building a Shiny App as a Package

• https://rtask.thinkr.fr/blog/building-a-shiny-app-as-a-package/
• Framework for Shiny Apps in R Packages

Collapsible menu

Three R Shiny tricks to make your Shiny app shines (2/3): Semi-collapsible sidebar

Color picker

https://github.com/daattali/colourpicker

Simulations

Monte Carlo Shiny

Tables

• Announcing the 2020 RStudio Table Contest
• Edit datatables in R shiny app. It uses DT package.
• reactable
  • How to create tables in R with expandable rows

Multimedia

Shiny and Reactive Multimedia

Math formula

• mathjax
• Write in-line equations in your Shiny application with MathJax

shinyMatrix

• https://cran.r-project.org/web/packages/shinyMatrix/index.html shinyMatrix: Shiny Matrix Input Field]
• How to Use shinyMatrix and plotly Graphs as Inputs in a Shiny App

Tree

shinyTree

D3

• collapsible d3js trees
• d3po: R package for easy interactive D3 visualization with Shiny

Time series

dygraphs

CSS

• https://shiny.rstudio.com/articles/css.html
• How to Use CSS to Style Your R Shiny Projects

Debug

• reactlog: Visually debug your reactivity issues
• Debugging Shiny applications

Talks

Shiny in production: Principles, practices, and tools - Joe Cheng 2019

Tips

Shiny tips & tricks for improving your apps and solving common problems by Dean Attali.

Recreating a Shiny App with Flask

Recreating a Shiny App with Flask

Modularize your shiny apps

• https://shiny.rstudio.com/articles/modules.html
• https://www.r-exercises.com/2018/10/15/modularize-your-shiny-apps-exercises/
• How to Safely Remove a Dynamic Shiny Module

A Shiny-app Serves as Shiny-server Load Balancer

ggtips: adding tooltips boxes to ggplots

Adds interactive tooltip boxes to ggplots (standalone or rendered in Shiny)

shinytest

New in RStudio 1.2: record and run tests for your Shiny code right inside the IDE with the shinytest package

Build a static website with R Shiny

Build a static website with R Shiny

Embed a shiny app on your website

See this example Interactive visualization of survival curves with Shiny where it use iframe to embed a shiny app hosted on shinyapps.io.

<iframe width="750" height="650" scrolling="no" frameborder="no" src="https://hinkelman.shinyapps.io/shiny-survival-covariate/"> </iframe>

Machine learning examples

How To Share Your Machine Learning Models With Shiny

Real Shiny Examples

• CellMinerDB from NCI/NIH.
• UCSCXenaShiny
• voomDDA: Discovery of Diagnostic Biomarkers and Classification of RNA-Seq Data. https://peerj.com/articles/3890/
• Interactive analysis of metagenomics data
• ExpressionDB, An open source platform for distributing genome-scale datasets
• GREIN : GEO RNA-seq Experiments Interactive Navigator and the paper
• SurvELM: An R package for high dimensional survival analysis with extreme learning machine , paper
• Essential guidelines for computational method benchmarking paper
• BISR-RNAseq – an efficient and scalable RNAseq analysis workflow with interactive report generation
• NASQAR: a web-based platform for high-throughput sequencing data analysis and visualization. 2020
• MutationExplorer (sloww) and Source
• ideal: an R/Bioconductor package for interactive differential expression analysis
• BingleSeq- A user-friendly R package for Bulk and Single-cell RNA-Seq data analyses.
• OmicsVolcano: software for intuitive visualization and interactive exploration of high-throughput biological data
• SC1: scRNA-Seq Analysis Pipeline, manuscript
• Azimuth A Shiny web app for mapping datasets using Seurat v4
• cnvscope.nci.nih.gov
• R Shiny in Life Sciences – Top 7 Dashboard Examples
• R Shiny in Government – Top 7 Dashboards You Should See
• classifieR a flexible interactive cloud-application for functional annotation of cancer transcriptomes
• BatchQC package. Batch Effects Quality Control Software. That's why the vignettes do not show any text/plots output. However, an HTML report and other files are created automatically in the working directory.

Interesting Examples

• Convert a data frame to a mediawiki table
• Very shiny holidays! Shiny + JQuery + CSS.
• Shinyfit: Advanced regression modelling in a shiny app
• Visually explore Probability Distributions with vistributions
• https://github.com/hadley/cran-downloads

  install.packages("cranlogs")
  install.packages("shiny")
  runGitHub("hadley", "cran-downloads")
  # cannot open URL 'https://github.com/cran-downloads/hadley/archive/master.tar.gz': 
  # HTTP status was '404 Not Found'
  
  system("cd ~/github/; git clone https://github.com/hadley/cran-downloads.git")
  runApp("~/github/cran-downloads/")

• Exploring Nginx workers load arbitration
• COVID-19
  • sars2pack
  • Coronavirus COVID-19 statistics and forecast
  • https://github.com/nytimes/covid-19-data
  • tidycovid19, Covid-19: Explore Your Visualizer Degrees of Freedom
  • COVID-19 Tracker: Days since N
  • Projections (not shiny)
  • https://twitter.com/rafalab/status/1249704266480181250?s=20 (not shiny)
  • IMHE COVID-19 CurveFit program, "severe error" in the formulation of the IHME model (not shiny)
• How to create a simple Coronavirus dashboard specific to your country in R
• Whats Cooking ??
• countdown, source
• Hangman from 2nd Annual Shiny Contest.
• A shiny app for exploratory data analysis

Scaling

• Shiny 1.1.0: Scaling Shiny with async

Long run with Shiny

• Long Running Tasks With Shiny: Challenges and Solutions
• Progress indicators
• How to display a busy indicator in a shiny app?
• shinycssloaders package. Add a loading animation ("spinner") to outputs. Easy to use.
  • How to show Spinning Wheel or Busy Icon while waiting in Shiny

Track Shiny App User Activity With the RStudio Connect Server =

Track Shiny App User Activity With the RStudio Connect Server API

Standalone application

Photon: Building an Electron-Shiny app using a simple RStudio addin

Mobile

shinyMobile