R

install.packages («package_name«)
library («package_name«)

variable_name <- value
print («variable_name«)
ls()

str (object)

head (dataframe)

dataframe$column

name (dataframe)

length(vector)

class (vector)

levels(dataframe$column)

vector <- c(value1, value2, … valueN)

seq (initial_value, end_value, increment)

char_variable <- as.character(numeric_variable)

numeric_variable <- as.numeric(char_variable)

sort(dataframe$column)

index_variable <- order(dataframe$column)

min, max, wich

rank(vector)