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introduction to R#

  • open source
  • used as statistical software and data analysis tool
  • comes with command line interface

Importance#

  • well-developed,simple,effective -includes loop and recursive functions - input output facilities
  • provides graphical interface
  • flexible language-allows tool like c and c++
  • has effective data handling and storage facility
  • provides-extensive-coherent-integrated collection of tools for analysis
  • includes package system-allows user to add their functionality
  • used for statistical computing and design

data types#

6 datatype

  • logical
  • numeric
  • integer
  • complex
  • character
  • raw
  • values as raw bytes
  • charToRaw()
  • rawToChar()

  • format: variable<- value

    raw_variable <- charToRaw("Welcome to Programing)
char_variable <- rawToChar(raw_variable)

complex_value <- 3+2i
print(class(complex_value)) // "complex"

Operators in R#

  • Arithmetic operators
  • Assignment operators
  • Comparison operators(==,!=,>,<,>=,<=)
  • Login operators (&,&&,|,||,!)
  • Miscellaneous operators

arithmetic operators
Assignment operators
Miscellaneous operators

Loops#

  • for loops
  • while loops
  • repeat loops
  • it has no condition to terminate loop
  • place condition within loop body and declare break

for loop
while loop
repeat loop

function in R#

my_function<- function(){
  statement
}
my_fun<- function(name){
  paste(name,"lol")
}

R script#

  • file with extension .R