Shiny

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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.

ShinyHello.png Shinympg.png ShinyReactivity.png ShinyTabsets.png ShinyUpload.png

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.

Deploy to run locally

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.

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.

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

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

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.

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.

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 here for more about packrat.

Deploy with Docker

Deploying an R Shiny App With Docker

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.

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

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

Reverse proxy: Deploy your own shiny server

Shiny https: Securing Shiny Open Source with SSL

How to run an R shiny app

Example of embedding shiny in your web page

http://michaeltoth.me/popularity-of-baby-names-since-1880.html

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/

Shiny + Docker

shinydashboard

flexdashboard

Dash bio for R

Introducing Dash Bio for R

shinytheme

shinythemes 1.1.1

shiny + databases: pool package

https://blog.rstudio.com/2017/11/17/pool-0-1-3/

tags, hyperlinks

dates

websocket

http://illposed.net/jsm2012.pdf

CentOS

Gallery

Persistent data storage in Shiny apps

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

Password protection

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/

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

Edit datatables in R shiny app. It uses DT package.

D3

CSS

Debug

reactlog: Visually debug your reactivity issues

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.

Modularize your shiny apps

https://www.r-exercises.com/2018/10/15/modularize-your-shiny-apps-exercises/

A Shiny-app Serves as Shiny-server Load Balancer

Shinyloadtest tools for load testing Shiny applications

shinytest

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

Shiny-server System Performance Monitoring for Open Source Edition

Real Shiny Examples

Interesting Examples

Scaling