rprogramming.md

R programming

Reading materials

R programming for data science, Roger Peng R for data science, Hadley Wickham

Introducing R

• Software demo R, Rstudio, Rstudio cloud
  • Cool example 1. Shiny apps gallery
  • Cool example 2. Plotly grahics in R
  • Cool example 3. MRICloud output Get some data here
• Discussion: installing R on Mac/windows/linux; Rtools on windows, bash on windows
• Demo: running R server
• Demo: Rstudio cloud
• A history of R
• Coding standards for R
• Data types in R
• str
• Software demo data types in R, operators in R

R programming

• Control structures in R
• Scoping
• Functions
• Subsetting
• Vectorizing
• apply
• Debugging

Getting data and manipulating data in R in the tidyverse

• Data rectangling
• Tidy data
• Tibbles
• Data import
• Data export
• dplyr
• Pipes
• Merging data
• Web scraping with Rvest
• Example dplyr on MRICloud data
• rvest for web scraping
• more rvest

MRICloud examples

• Dplyr
• Long versus wide data