The document discusses R functions, including how to define a function, call a function, and use a new binary operator. It provides an example of defining a function called func1 that takes two arguments, calculates the total length by adding the lengths of the arguments, and returns the result. The function is then called by passing two vectors a and b, returning a length of 8. It also notes that defining a function using %!% allows it to be used as a new binary operator.

1. Using Functions The Dataminingtools.net Team

2. R functions An R function is defined in then following way: > name <- function(arg_1, arg_2, ...) expression The expression is an R expression that uses the arguments, arg_i, to calculate a value. The value of the expression is the value returned for the function.

3. R functions Calling a functions requires the following format: name(expr_1, expr_2, ...)

4. R functions Defining a function Calling a function > func1 <- function(a,b){ + l1<-length(a); + l2<-length(b); + length <- l1 + l2; + length + } > a<-c("a", "b", "c", "d"); > b<-c(1,2,3,4); > func1(a,b) [1] 8

6. New Binary Operators