Data Frame in R is a table or a two-dimensional array-like structure for storing data tables. Each element of the data frame builds the column, and the contents of the elements create the rows. There are several real-life scenarios where we need to initialize an empty data frame or empty an existing data frame with … Read more
To create a vector in R, use the c() function. The c() function is S4 generic but with an argument list (x, …). The c() function can be used to combine two vectors. c() in R The c() is a built-in R generic function that combines its arguments. The c() function creates a vector explicitly … Read more
We often see a functionality where we want to check something by comparing it with a pattern. We use a regular expression to match specific character vectors in the string. Let’s see how to use regular expressions in R. The functions like grep(), grepl(), regexpr(), gregexpr(), and regexec() search for matches to argument pattern within … Read more
Factors are used to represent categorical data. To create a factor variable in R, use the factor() function. Factors are stored as integers and have labels associated with these unique integers. as.factor in R The as.factor() is a built-in R function that converts a column from numeric to factor. The as.factor() method takes a column … Read more
If you have a large dataset to analyze, condensing a huge dataset with 30+ columns and thousands of rows will get tough. To solve this problem, you can use the head() or tail() function. It gives you a snapshot of that large dataset. In this tutorial, we will see how to use a tail() function with … Read more
If you have a large dataset to analyze, condensing a vast dataset with 30+ columns and thousands of rows will get tough. To solve this problem, you can use either head() or tail() function. It gives you a snapshot of that large dataset. In this tutorial, we will see how to use a head() function with … Read more
Every language provides some functions that can help you print the data on the console, and R is no different. To print the data on the console in R, use the print() function. print in R The print() is a built-in R function that prints its argument. The print() function accepts three arguments and does … Read more
To get today’s date in R, use the Sys.Date() function. Sys.Date() Output [1] “2021-03-11” To get the current date and time in R, use the date() function. date() Output [1] “Thu Mar 11 16:59:16 2021” Dates can be imported from character, numeric, POSIXlt, and POSIXct formats in R using as.Date() method. as.Date in R The … Read more
Sorting is a common operation in Programming is when data is arranged into meaningful order that makes it simpler to understand and analyze. In R, you can store data in various data types such as vectors, data frames, matrices, and arrays. sort in r The sort() is a built-in R function used to sort or … Read more
R has no built-in string data type. Instead, it has a character, and you can use the is.character() function to check. Type conversions in R work as you would expect. For example, adding the character string to a numeric vector converts all the vector items to the character. r toString The toString() is a built-in … Read more