Krunal Lathiya

An empty list means it does not contain any elements. An empty list and NULL have a key difference. An empty list means there is a list object with 0 elements, and a NULL list means NULL; it does not have a class “list”. Here are three ways to create an empty list in R: Using … Read more

The is.array() is a built-in R function that checks whether an input object is an array. It returns TRUE if it is an array and FALSE otherwise. Syntax is.array(obj) Parameters Name Value obj It is an input object that will be checked for an array object. Visual representation Checking for an array object # Creating … Read more

The as.vector() function converts an input R object into a vector. The object can be anything like a matrix, array, or factor. The return value is a vector. When you convert the matrix to a vector, it will remove the attributes, such as dimension, to transform into a vector. When you convert a factor to … Read more

The is.matrix() is a built-in R function that checks whether an input object is a matrix. It returns TRUE if the object is a matrix and FALSE otherwise. To prevent unexpected errors, you need to check if the input object is a matrix, and that’s where we need this function. It makes our code more … Read more

R is.logical() function checks whether an input object’s data type is logical. If the object is logical whose values are either TRUE or FALSE, it returns TRUE; otherwise, it is FALSE. This function checks the underlying type of the object. Due to the nature of the function, you can use it in conditional statements to … Read more

The is.list() function in R checks if an input object is a list. It returns TRUE if an object is a list and FALSE otherwise. This function checks if an object itself is a list, not the elements of the list.  For example, if a list has vector and data frames, it is still a … Read more

R is.integer() function checks if a variable or an object is of type integer. It returns TRUE if it is an integer and FALSE otherwise. Numbers are stored in either integer or double (floating-point) data types. In R, the simple number 5 is not of type integer; it is a value of type double. To … Read more

The is.nan() is a built-in R function that checks if a vector or any valid object contains “Not a Number (NaN)” values. It returns a logical vector of the same length as the input, with each element being TRUE if the corresponding element in the input is NaN and FALSE otherwise. By default, this function … Read more

The is.infinite() function checks each element of a vector or an R object contains infinity. If an element is infinite, the corresponding element in the output vector is TRUE. Otherwise, FALSE.  By default, it handles atomic vectors, but it can also handle other data types. In R, there are two types of infinity: Inf (positive … Read more