Difference between revisions of "CRG Introduction to R 2018"

Revision as of 17:09, 15 March 2018

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.

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

Day 2
- Missing values: how to deal with NA values.
- Matrices & data frames
  2-dimensional objects: how to create, subset, manipulate.

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

Day 3
- Library / packages
  Install and load packages. Look for functions in those packages.
- Input / output
  Reading in and writing out.

[[Media:|Slides day3]]
[[Media:|Exercises day3]]

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]]

@@ Line 66: / Line 66: @@
 *[https://www.statmethods.net/index.html:Quick R]
 *[http://www.cookbook-r.com/:Cookbook for R]
-*[https://cran.r-project.org/doc/contrib/Paradis-rdebuts_en.pdf:R for beginners - CRAN website]
+*[https://cran.r-project.org/doc/contrib/Paradis-rdebuts_en.pdf: R for beginners - CRAN website]