R Basic

When you convert a list to a matrix, you are essentially taking the elements of a list and rearranging them into a two-dimensional structure with rows and columns. To convert a list to the matrix in R, use the matrix() function and pass the unlist() function as an argument. The unlist() function flattens a list into a … Read more

If you are working with multidimensional data in R, you should explore Arrays. Arrays are designed to store data in more than two dimensions and represent complex data structures. The as.array() function attempts to coerce the input object into an array structure. It handles various input types, including vectors, lists, data frames, etc. Syntax as.array(input_obj, … Read more

The fastest and easiest way to convert a list to a data frame in R is to use the “as.data.frame()” function. It checks whether an input object is a data frame and, if not, tries to convert it. main_list <- list( col1 = c(1, 2, 3), col2 = c(4, 5, 6), col3 = c(7, 8, 9) … Read more

Here are three ways to create an empty list in R: Using list() Using vector() Assigning NULL to empty an existing list 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 … 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

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