R Basics

• Comments start with #
  • No specific syntax for multi-line comments
• Index starts from 1
• Most index in R are inclusive
  • c(1,2,3)[1:2] returns 1 2
• The naming convention of files and variables is snake_case
• Print variables using print
• Assign a value to a variable using
  • x <- 1 (preferred traditionally)
  • 1 -> x
  • x = 1
• Variables in R are dynamic typing like Python
• The default arithmetics in R are element-wise, unlike MATLAB
• The interactive shell of R uses an indicator [x] to show the index of the printed vector
  • example:

    > x <- 11:30
    > x
     [1] 11 12 13 14 15 16 17 18 19 20 21 22
    [13] 23 24 25 26 27 28 29 30
    ```
- Use function `View()` to view data in a specific RStudio viewer