R is a programming language created in 1993 by Ross Ihaka.
R is an open source programming language and software environment for statistical computing and graphics that is supported by the R Foundation for Statistical Computing. The R language is widely used among statisticians and data miners for developing statistical software and data analysis. Polls, surveys of data miners, and studies of scholarly literature databases show that R's popularity has increased substantially in recent years. Read more on Wikipedia...
#11on PLDB | 29Years Old | 1.1mUsers |
print("Hello, world!")
cat("Hello World")
# Hello World in R
cat("Hello world\n")
hello <- function() {
print("hello, world!")
}
hello()
install.packages("caTools") # install external package
library(caTools) # external package providing write.gif function
jet.colors <- colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F",
"yellow", "#FF7F00", "red", "#7F0000"))
dx <- 400 # define width
dy <- 400 # define height
C <- complex( real=rep(seq(-2.2, 1.0, length.out=dx), each=dy ),
imag=rep(seq(-1.2, 1.2, length.out=dy), dx ) )
C <- matrix(C,dy,dx) # reshape as square matrix of complex numbers
Z <- 0 # initialize Z to zero
X <- array(0, c(dy,dx,20)) # initialize output 3D array
for (k in 1:20) { # loop with 20 iterations
Z <- Z^2+C # the central difference equation
X[,,k] <- exp(-abs(Z)) # capture results
}
write.gif(X, "Mandelbrot.gif", col=jet.colors, delay=100)
if else repeat while function for in next break TRUE FALSE NULL Inf NaN NA NA_integer_ NA_real_ NA_complex_ NA_character_ ...
Feature | Supported | Example | Token |
---|---|---|---|
Conditionals | โ | ||
Functions | โ | ||
While Loops | โ | ||
Booleans | โ | TRUE FALSE | |
Assignment | โ | = | |
Print() Debugging | โ | ||
Line Comments | โ | # A comment |
# |
Pipes | โ | # R has pipes via a library like dplyr starwars %>% filter(species == "Droid") |
|
Operator Overloading | โ | ||
Lazy Evaluation | โ | ||
File Imports | โ | source("filename.r") |
|
Comments | โ | # A comment |
|
Bitwise Operators | โ | ! x x & y x && y x | y x || y xor(x, y) |
|
Strings | โ | "hello world" |
" |
Semantic Indentation | ฯด | ||
MultiLine Comments | ฯด |
repo | stars | description |
---|---|---|
bookdown | 1586 | Authoring Books and Technical Documents with R Markdown |
r4ds | 2051 | R for data science: a book |
tidytuesday | 1062 | Official repo for the #tidytuesday project |
shiny | 3527 | Easy interactive web applications with R |
rmarkdown | 1596 | Dynamic Documents for R |
swirl_courses | 3009 | ๐ A collection of interactive courses for the swirl R package. |
rnaseq_tutorial | 767 | "Informatics for RNA-seq: A web resource for analysis on the cloud. Educational tutorials and working pipelines for RNA-seq analysis including an introduction to: cloud computing critical file formats reference genomes gene annotation expression differential expression alternative splicing data visualization and interpretation." |
seurat | 540 | R toolkit for single cell genomics |