R

R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R.http://www.r-project.org/about.html

See Also

• Wikipedia:R (programming language)

References

Tasks

• 100 doors
• 15 Puzzle Game
• 2048
• 24 game
• 24 game/Solve
• A+B
• ABC Problem
• AKS test for primes
• Abundant, deficient and perfect number classifications
• Accumulator factory
• Ackermann function
• Align columns
• Almost prime
• Anagrams
• Anagrams/Deranged anagrams
• Animation
• Anonymous recursion
• Anti-primes
• Apply a callback to an array
• Arbitrary-precision integers (included)
• Archimedean spiral
• Arithmetic-geometric mean
• Arithmetic/Complex
• Arithmetic/Integer
• Array concatenation
• Array length
• Arrays
• Assertions
• Associative array/Creation
• Associative array/Iteration
• Average loop length
• Averages/Arithmetic mean
• Averages/Median
• Averages/Mode
• Averages/Pythagorean means
• Averages/Root mean square
• Averages/Simple moving average
• Babbage problem
• Balanced brackets
• Barnsley fern
• Benford's law
• Bernoulli numbers
• Binary digits
• Binary search
• Bitmap
• Bitmap/Bézier curves/Cubic
• Bitmap/Bézier curves/Quadratic
• Bitmap/Flood fill
• Bitmap/Write a PPM file
• Bitwise operations
• Boolean values
• Brownian tree
• Bulls and cows
• CRC-32
• CSV data manipulation
• Caesar cipher
• Calculating the value of e
• Call a function
• Call a function in a shared library
• Cartesian product of two or more lists
• Case-sensitivity of identifiers
• Catalan numbers
• Catamorphism
• Chaos game
• Character codes
• Check Machin-like formulas
• Check that file exists
• Chinese remainder theorem
• Cholesky decomposition
• Classes
• Closest-pair problem
• Closures/Value capture
• Collections
• Colour bars/Display
• Combinations
• Command-line arguments
• Comments
• Compare a list of strings
• Compound data type
• Constrained random points on a circle
• Convert decimal number to rational
• Copy a string
• Copy stdin to stdout
• Count in factors
• Count occurrences of a substring
• Create a file
• Create a two-dimensional array at runtime
• Cumulative standard deviation
• DNS query
• Date format
• Date manipulation
• Day of the week
• Deconvolution/1D
• Delete a file
• Detect division by zero
• Determine if a string is numeric
• Digital root
• Dinesman's multiple-dwelling problem
• Documentation
• Dot product
• Dragon curve
• Dynamic variable names
• Element-wise operations
• Empty program
• Empty string
• Entropy
• Enumerations
• Environment variables
• Ethiopian multiplication
• Euler method
• Evaluate binomial coefficients
• Even or odd
• Evolutionary algorithm
• Exceptions
• Exceptions/Catch an exception thrown in a nested call
• Execute a system command
• Exponentiation operator
• Extreme floating point values
• FASTA format
• Factorial
• Factors of an integer
• Fast Fourier transform
• Fibonacci sequence
• Fibonacci word
• Fibonacci word/fractal
• Filter
• Find common directory path
• Find limit of recursion
• Find the missing permutation
• First class environments
• First-class functions
• First-class functions/Use numbers analogously
• Five weekends
• Fivenum
• FizzBuzz
• Flatten a list
• Formatted numeric output
• Forward difference
• Fractal tree
• Function composition
• Function definition
• GUI component interaction
• GUI enabling/disabling of controls
• Gamma function
• Generate Chess960 starting position
• Generate lower case ASCII alphabet
• Generator/Exponential
• Generic swap
• Get system command output
• Gray code
• Grayscale image
• Greatest common divisor
• Greatest element of a list
• Greatest subsequential sum
• Greyscale bars/Display
• Guess the number
• Guess the number/With feedback
• HTTP
• HTTPS
• Hailstone sequence
• Hamming numbers
• Happy numbers
• Hash from two arrays
• Haversine formula
• Hello world!
• Hello world/Graphical
• Hello world/Newline omission
• Hello world/Standard error
• Hello world/Text
• Hello world/Web server
• Heronian triangles
• Higher-order functions
• Hofstadter Q sequence
• Hofstadter-Conway $10,000 sequence
• Horner's rule for polynomial evaluation
• Host introspection
• Hostname
• I before E except after C
• Identity matrix
• Include a file
• Increment a numerical string
• Infinity
• Inheritance/Single
• Input loop
• Integer comparison
• Integer sequence
• Interactive programming
• Introspection
• Inverted syntax
• JSON
• Jensen's Device
• Josephus problem
• Kahan summation
• Knapsack problem/0-1
• Knapsack problem/Continuous
• Knapsack problem/Unbounded
• Knight's tour
• Knuth shuffle
• Kronecker product
• Kronecker product based fractals
• LU decomposition
• Langton's ant
• Last Friday of each month
• Leap year
• Least common multiple
• Leonardo numbers
• Letter frequency
• List comprehensions
• Literals/Integer
• Literals/String
• Logical operations
• Long multiplication
• Look-and-say sequence
• Loop over multiple arrays simultaneously
• Loops/Break
• Loops/Continue
• Loops/Do-while
• Loops/Downward for
• Loops/For
• Loops/For with a specified step
• Loops/Foreach
• Loops/Infinite
• Loops/N plus one half
• Loops/Nested
• Loops/While
• Lucas-Lehmer test
• Luhn test of credit card numbers
• MD5
• Man or boy test
• Mandelbrot set
• Matrix multiplication
• Matrix transposition
• Matrix-exponentiation operator
• Memory allocation
• Menu
• Mind boggling card trick
• Modulinos
• Monte Carlo methods
• Monty Hall problem
• Multifactorial
• Multiple distinct objects
• Multiple regression
• Multiplication tables
• Musical scale
• Mutual recursion
• N-queens problem
• Named parameters
• Non-continuous subsequences
• Non-decimal radices/Convert
• Non-decimal radices/Input
• Non-decimal radices/Output
• Nth root
• Null object
• Number reversal game
• Numerical integration
• One of n lines in a file
• One-dimensional cellular automata
• OpenGL
• Optional parameters
• P-value correction
• Palindrome detection
• Pangram checker
• Partial function application
• Pascal matrix generation
• Pascal's triangle
• Penney's game
• Perfect numbers
• Perfect shuffle
• Permutation test
• Permutations
• Pi
• Pick random element
• Play recorded sounds
• Playing cards
• Plot coordinate pairs
• Polymorphism
• Polynomial long division
• Polynomial regression
• Power set
• Price fraction
• Primality by trial division
• Prime conspiracy
• Prime decomposition
• Priority queue
• Probabilistic choice
• Program name
• Program termination
• Proper divisors
• Pythagoras tree
• QR decomposition
• Quaternion type
• Queue/Definition
• Quine
• Random number generator (included)
• Random numbers
• Range expansion
• Range extraction
• Ray-casting algorithm
• Read a file line by line
• Read a specific line from a file
• Read entire file
• Real constants and functions
• Recaman's sequence
• Reduced row echelon form
• Regular expressions
• Remove duplicate elements
• Rename a file
• Repeat
• Repeat a string
• Return multiple values
• Reverse a string
• Reverse words in a string
• Roman numerals/Decode
• Roman numerals/Encode
• Roots of a function
• Roots of a quadratic function
• Roots of unity
• Rosetta Code/Count examples
• Rosetta Code/Find unimplemented tasks
• Rosetta Code/Fix code tags
• Rot-13
• Run-length encoding
• Runge-Kutta method
• Runtime evaluation
• Runtime evaluation/In an environment
• SEDOLs
• SHA-1
• SHA-256
• Scope modifiers
• Search a list
• Send email
• Seven-sided dice from five-sided dice
• Shell one-liner
• Short-circuit evaluation
• Show Ascii table
• Show the epoch
• Sierpinski carpet
• Sierpinski triangle
• Sierpinski triangle/Graphical
• Sieve of Eratosthenes
• Simple windowed application
• Sleep
• Sockets
• Sort an array of composite structures
• Sort an integer array
• Sort disjoint sublist
• Sort stability
• Sort three variables
• Sort using a custom comparator
• Sorting algorithms/Bogosort
• Sorting algorithms/Bubble sort
• Sorting algorithms/Cocktail sort
• Sorting algorithms/Comb sort
• Sorting algorithms/Counting sort
• Sorting algorithms/Gnome sort
• Sorting algorithms/Insertion sort
• Sorting algorithms/Merge sort
• Sorting algorithms/Permutation sort
• Sorting algorithms/Quicksort
• Sorting algorithms/Selection sort
• Sorting algorithms/Stooge sort
• Spiral matrix
• Stack
• Stack traces
• Stair-climbing puzzle
• Statistics/Basic
• Statistics/Normal distribution
• Stem-and-leaf plot
• Stern-Brocot sequence
• String case
• String comparison
• String concatenation
• String length
• Strip comments from a string
• Subleq
• Substring
• Sum and product of an array
• Sum digits of an integer
• Sum multiples of 3 and 5
• Sum of a series
• Sum of squares
• Sunflower fractal
• Symmetric difference
• System time
• Take notes on the command line
• Terminal control/Ringing the terminal bell
• Test a function
• Text processing/1
• Text processing/2
• Text processing/Max licenses in use
• Thue-Morse
• Time a function
• Tokenize a string
• Top rank per group
• Topological sort
• Topswops
• Trabb Pardo–Knuth algorithm
• Trigonometric functions
• URL decoding
• URL encoding
• URL parser
• Ulam spiral (for primes)
• Unbias a random generator
• Undefined values
• Unicode variable names
• Unix/ls
• Variable size/Get
• Variables
• Variadic function
• Vector products
• Verify distribution uniformity/Chi-squared test
• Verify distribution uniformity/Naive
• Vigenère cipher
• Walk a directory/Non-recursively
• Walk a directory/Recursively
• Web scraping
• Welch's t-test
• Window creation
• Word frequency
• Word wrap
• Write float arrays to a text file
• XML/Input
• XML/Output
• XML/XPath
• Y combinator
• Yahoo! search interface
• Yin and yang
• Zebra puzzle
• Zeckendorf number representation
• Zero to the zero power
• Zig-zag matrix