R is a free
software environment for statistical computing and graphics. It runs on variety
of UNIX platforms, Windows and MacOS. In this tutorial series, you are going to
learn basics to start working with R.
- Install R on mac
- Install R Studio for Mac
- R : Writing code and setting working directory on Mac
- Assignment Operator : <- data-blogger-escaped-a="">
- Colon Operator (:)
- Primitive data types
- Character object
- Numeric data type
- Integer Data type
- Complex data type
- Logical data type
- Vectors
- Coercion
- Combine Vectors
- Vector Arithmetic
- Accessing elements of a vector
- Get the type of variable in R
- Lists
- Matrices
- cbind and rbind
- factors
- Missing values, Impossible values
- Data Frames
- Names Attribute of an object
- write.table : Writing data to file
- read.table : Read data from file
- Read csv file in R
- writeLines : Write lines to a file
- readLines : Read text lines from a file
- dump : Dump objects to a file
- source : Read R code from a file (or) connection
- dput : Write an object to a file
- dget : Recreates object from a file
- save : save R objects
- load : Reload the data saved with function save
- Serialize object
- unserialize : unserialize serialized data
- Connections : Interfaces to the outside world
- Subsetting ( vectors, lists)
- Subsetting matrices
- Removing missing values
- Vectorized Operations
- matrix operations
- RStudio Run R code
- if-else statement
- for loops
- while loop
- repeat loop
- break statement
- next statement
- functions
- Passing default values to function parameters
- formals : Get the formal argument of a function
- Function argument matching
- Lazy evaluation
- Working with Dates
- POSIXct , POSIXlt Working with times
- Loop functions
- lapply and sapply
- apply function
- mapply function
- str function
- String Manipulation
- grep : Search for a string in a character vector
- nchar : Get the length of string
- paste() : Concatenate strings
- sprintf(): Assemble string in formatted manner
- substr : Returns sub string
- strsplit() : split string into substring
- regexpr(): Search for a pattern in given text
- gregexpr(): Find all occurrences of pattern
- Regular Expressions
- Install packages
- Load Installed packages
- Reading xls sheet data
- Reading xlsx sheet data
- Graphics
- Draw a line graph
- Create bar plot
- Clear R console
- Remove all objects other than functions
- List all files in current directory
- Print elements of vector one per line
- Get help for a command
- Display contents of a file to console
- Get the version of R running
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