Context

• R is a powerful tool for data analysis
• Huge amount of tools under development for the community
• R markdown, Shiny Apps…

Illustration

• Mafalda Project (seabird tracking)

mafalda

What is it?

• Document that regroups both narrative text and code
• Various output format available (html, pdf, word, books, website…)

Why?

• Very convenient for producing scientific documents
• articles, presentation, automatic reports…
• Fully reproducible analysis

• Used at the R console for data analysis just like conventional plots
• Embedded within R markdown documents
• Incorporated into Shiny apps
• Saved as stand-alone web page for ad-hoc use

Note: Interactivity only works when the output format is HTML

Plotly

DT

Leaflet

Crosstalk

https://www.htmlwidgets.org/

1. Launch Rstudio
2. File > New File > Rmarkdown
3. Write text in Markdown / Write code in R
4. Click on Knitr to render the file

For advanced tutorials: https://rmarkdown.rstudio.com/

What is it?

• Interactive Web Application (html)
• It can eventually be embedded within a R markdown (html)

Why?

• Interactive visualization of data
• Web Deployment to adress the public

Note: A shiny App is not a ‘output file’ that can be shared such as R Markdown. It needs to be running on one server

(..but Rstudio provides very convenient and FREE solutions to deploy the app!)

Shiny Widget Gallery

Mafalda Data Overview

Shiny App to Discover Mafalda Dataset:

https://amdroy.shinyapps.io/seabirdmap/

1. Launch Rstudio
2. File > New File > Shiny Web App
3. Write ui.R and server.R function
4. Click on Run App to run the app locally

When it comes to sharing Shiny apps, you have two basic options:

Sharing as R script

User need to have R and know how to use it:

• run from local files: runApp
• run from github repository: runGithub

Sharing as a web page

• Use shinyapp.io which provides a free hosting solution
• Use Shiny Server to build your own linux server

For advanced tutorials: https://shiny.rstudio.com/tutorial/written-tutorial/lesson1/

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