CRG Introduction to R 2018

Description

This is an introductory course to R programming.
The course is offered in 4 slow-paced practicums for absolute beginners. The goal is to offer a good base with a lot of hands on exercises.
We will use R Studio on the server of the CRG.

Course Instructors

• Sarah Bonnin

Dates, Time and Location

• March 19-20, April 16-17 2018
• 10:00 - 14:00
• PRBB Bioinformatics classroom (468). 4th floor. The hotel/North wing.

Course Syllabus, Schedule, and Materials

The day before each session, the slides will be uploaded in case you want to print them.

• Day 1
  • Introduction to R Studio
    We will use the R Studio server on the server CRG. We will go through what can be done with R Studio, from file and folders manipulation/navigation, to getting help on R functions.
  • Paths / directories
  • Basics of R: syntax, create an object, manipulate the object, simple arithmetics.
  • Functions usage in R
    Arguments. Get help.
  • R scripts: write and save commands, run them as a block. Comment code.
  • Data types.
  • Data structures:
    • Vectors
      Basic (and most important) data structure in R. We will learn how to create, modify, subset, manipulate, compare vectors.
    • Introduction to factors: categorical vectors.
  • Missing values: how to deal with NA values.

[[Media:|Slides day1]]
[[Media:|Exercises day1]]

• Day 2
  • Matrices & data frames
    2-dimensional objects: how to create, subset, manipulate.
  • Library / packages
    Install and load packages. Look for functions in those packages.
  • Input / output
    Reading in and writing out.

[[Media:|Slides day2]]
[[Media:|Exercises day2]]

• Day 4
  • Basic plotting (base graphics package)
    Scatter plots, boxplots, barplots, pie plots, histograms.
  • Introduction to ggplot2 package
    ggplot2 provides functions for creating and customizing plots. We will learn the basic structure and how to produce simple plots.
  • Input / output
    We will save plots as files in different formats, both from R Studio and from the terminal.

[[Media:|Slides day4]]
[[Media:|Exercises day4]]