# Which function in r

## What does the Which function do in R?

The which() function in R

**returns the position or the index of the value which satisfies the given condition**. The Which() function in R gives you the position of the value in a logical vector. The position can be of anything like rows, columns and even vector as well.## What is the type of function in R?

There are mainly three types of function in R programming:

**Primitive Functions**.**Infix Functions**.**Replacement Functions**.## Is c () a function in R?

The c() is a built-in generic function that combines its arguments. The c function in R is

**used to create a vector with values you provide explicitly**.## How do I view a function in R?

To view all the contents of a defined object,

**use the View() function**. Behind the scenes, the R calls utils::View() on the input and returns it invisibly. If the input is not a data frame, it is processed using a variant of as. data.## Is NA function in R?

To find missing values you check for NA in R using the is.na() function. This function

**returns a value of true and false for each value in a**data set. If the value is NA the is.na() function return the value of true, otherwise, return to a value of false.## What is data () function in R?

**data() returns a list of currently loaded datasets or loads a dataset**.

## What does summary () do in R?

The summary is a built-in R function

**used to produce result summaries of various model fitting functions**. The summary() function implores specific methods that depend on the class of the first argument.## What is dim () in R?

dim() function in R Language is

**used to get or set the dimension of the specified matrix, array or data frame**. Syntax: dim(x) Parameters: x: array, matrix or data frame.## What package is VIEW () in R?

The view function in the

**seasonal package**imports the identical seasonalview::view() function from the seasonalview package, so there is no need to explicitly load the seasonalview package.## What does str () mean in R?

str() function in R Language is

**used for compactly displaying the internal structure of a R object**. It can display even the internal structure of large lists which are nested. It provides one liner output for the basic R objects letting the user know about the object and its constituents.## What does class () do in R?

The function class

**prints the vector of names of classes an object inherits from**. Correspondingly, class<- sets the classes an object inherits from. Assigning NULL removes the class attribute. unclass returns (a copy of) its argument with its class attribute removed.## What is the use of %>% in R?

The compound assignment %<>% operator is

**used to update a value by first piping it into one or more expressions, and then assigning the result**. For instance, let’s say you want to transform the mpg variable in the mtcars data frame to a square root measurement.## What does %>% mean in R studio?

%>%

**has no builtin meaning**but the user (or a package) is free to define operators of the form %whatever% in any way they like. For example, this function will return a string consisting of its left argument followed by a comma and space and then it’s right argument.## What is Sapply in R?

sapply() function in R Language takes

**list, vector or data frame as input and gives output in vector or matrix**. It is useful for operations on list objects and returns a list object of same length of original set. Syntax: sapply(X, FUN) Parameters: X: A vector or an object.## What does glimpse function do in R?

glimpse() is like a transposed version of print() :

**columns run down the page, and data runs across**. This makes it possible to see every column in a data frame. It’s a little like str() applied to a data frame but it tries to show you as much data as possible.## What does %>% mean in Tidyverse?

Use %>%

**to emphasise a sequence of actions**, rather than the object that the actions are being performed on. Avoid using the pipe when: You need to manipulate more than one object at a time. Reserve pipes for a sequence of steps applied to one primary object.## What does mutate () mean in R?

In R programming, the mutate function is

**used to create a new variable from a data set**. In order to use the function, we need to install the dplyr package, which is an add-on to R that includes a host of cool functions for selecting, filtering, grouping, and arranging data.## What package is %>% in in R?

The pipe, %>% , comes from

**the magrittr package**by Stefan Milton Bache. Packages in the tidyverse load %>% for you automatically, so you don’t usually load magrittr explicitly. Here, however, we’re focussing on piping, and we aren’t loading any other packages, so we will load it explicitly.