intro_r/README.org

• A brief introduction to R
  • First steps in R
  • Matching patterns
  • Subsetting and indexing
  • Reading data
  • Vectorization
  • Iteration
  • Web scraping
  • Interesting packages
  • Data wrangling with {data.table}

A brief introduction to R

Scripts describing simple tasks to learn the first steps to work with data using the R programming environment

First steps in R

• Asking for help to use R
• Installing R from source
• Objects in R
• Integer quocient and modulo
• Non-standard evaluation in R

Matching patterns

• 'gsub' and 'sub'

Subsetting and indexing

• Build column in table indexing values

Reading data

• Reading pdf files

Vectorization

• Vectorization

Iteration

• Lapply, apply and for loop: brief introduction

Web scraping

• Web scraping example
• Using 'rvest' for scraping

Interesting packages

• 'roadoi'
• 'crul' package - web scraping

Data wrangling with {data.table}

• Introduction to {data.table}
• Querying in {data.table}: filter in i
• Querying in {data.table}: select in j