TOC: R Programming

• R - basics
  1. Background
  2. Alternatives
  3. Install R
  4. Install R Studio
  5. Launch interactive R, get help, and quit
  6. Running R on the command line using Rscript
  7. Comments
  8. R and simple math operations
  9. R variables
  10. R assignment (left-assignment, right-assignment)
  11. Variable types (numeric, character, logical, function)
  12. Variable types are deducted
  13. paste (join) strings and numbers together
  14. Operator preference order and parentheses
  15. Operators comparing numbers
  16. Operators comparing strings (characters)
  17. Convert string (character) to numeric
  18. Boolean (logical) operations
  19. Concatenate strings
  20. Convert between types using as.
  21. Printing with cat
• Vectors
  1. R vectors
  2. Variable types of vectors are deducted
  3. One element vector is the same a single value
  4. Sum of values in vectors
  5. Size of vector (length of vector)
  6. Access the n-the element of a vector
  7. R Vector: Negative index, exclude element
  8. R vector: Access several elements (slice)
  9. R vector: Exclude several elements
  10. Some basic statistical functions
  11. 3 ways to create vectors
  12. R - sequences and ranges
  13. Range of numbers
  14. Filter values
  15. Index of true elements - which
  16. which
  17. Matix TBD
  18. Vector operations - reuse values from shorter vector
  19. Summary of numeric data
  20. Change element of vector
  21. Assign vector to another name
  22. Reverse vector
  23. Sort vector
  24. Sort using order
  25. Operators comparing vectors
  26. Convert vector of strings to numerics
  27. Repeate the same number
  28. Boolean (logical) operations on vectors
  29. Factors
  30. Append to end of vector
• Data Frames
  1. Data Frame functions
  2. Iris dataset
  3. Built-in Iris data set
  4. Load Iris dataset
  5. Sort dataset by a column
  6. Order dataframe by two columns (secondary sort)
• Strings (characters)
  1. Substitute first occurence using sub
  2. Substitute all occurences using gsub
• Functions
  1. Functions overview
  2. Simple add function
  3. Recursive Fibonacci
  4. Fibonacci
• Testing
  1. Testthat
  2. Test Example
• Files
  1. Filesystem pathes
  2. Filesystem get current working directory (cwd)
  3. Concatenate pathes
  4. Change directory
  5. Recursively list files and directories
  6. Write to a textfile
  7. Read a textfile
  8. Counter with file storage
• Graphs
  1. Bar plot
  2. Associate name with each value
  3. Quick graphs
  4. Random numbers in normal distribution
• Packages
  1. CRAN
  2. Install CRAN packages
  3. Install CRAN packages from the command line
  4. Install several CRAN packages from the command line
  5. Read CSV file
  6. Read JSON file
• Other
  1. Exit - quit
  2. Script name
  3. Command line arguments
  4. if-statement
  5. for loop