The str_glue() function in R’s stringr package is “used to concatenate strings together, often using variables within the string.” Syntax str_glue(…, .sep, .envir = parent.frame(), .x, .na = “NA”) Parameters …: These are the strings to be concatenated. Strings can be a mix of constants and expressions enclosed in {}. The expressions within {} will … Read more
The str_detect() function from the stringr in R is “used to detect the presence or absence of a specific pattern in a string.” Syntax str_detect(string, pattern, negate = FALSE) Parameters string: It is a character vector. pattern: It is the pattern to look for. negate: If TRUE, return non-matching elements. Example 1: Using str_detect() function … Read more
To calculate a mean or average in R, you can “use the mean() function.” For example, mean(c(1, 2, 3, 4)) function returns 2.5. Syntax mean(x, trim, na.rm) Parameters x: The x is a Numeric Vector. trim: It drops some observations from both ends of the sorted vector. na.rm: It is a boolean value to ignore the NA … Read more
Here are two ways to add/append an element to a list in R. Using append() function Using c() function Method 1: Use the append() method The main way to add or append an element to a list in R is to use the “append()” function. The append() function accepts three parameters input list, a string … Read more
The do.call() function in R is “used to construct and execute a function call from a name or a function, as well as a list of arguments to be passed to it.” Syntax do.call(what, args) Parameters what: It represents either the function or a non-empty character and names the function to be called. args: It … Read more
Use the “if() {}” function to create an if-then statement in R. The if() function has two main elements, a logical test in the parentheses and conditional code in curly braces. The code in the curly braces is conditional because it is only evaluated if the logical test contained in the parentheses is TRUE. Syntax … Read more
R Matrix is a vector with attributes of a dimension and, optionally, dimension names attached to the Vector. A matrix is a two-dimensional data structure. How to Create a Matrix in R To create a matrix in R, you can use the matrix() function. The nrow and ncol properties define the dimension of the Matrix. Syntax matrix(values, … Read more
To install R on Mac, follow the below steps. Open the web browser and go to www.r-project.org. Click the “Download R” link in the middle of the page under “Getting Started.” Select the nearest region’s CRAN location (a mirror site) and click the corresponding link. Click on the “Download R for (Mac) OS X” link at … Read more
To create a list in R, you can use the “list()” function. The “list()” function accepts single or multiple arguments and returns the list. lt <- list(“SBF”, “Alameda”) print(lt) Output [[1]] [1] “SBF” [[2]] [1] “Alameda” You can see that we created a list with two elements. To print the data in the console, use … Read more
The c() function in R is “used to combine or concatenate its argument”. The c() stands for “combine”. It returns the output by giving parameters inside the function. Syntax c(…, recursive = FALSE, use.names = TRUE) Parameters …: They are the objects to be concatenated. recursive: It is logical. If recursive = TRUE, the function recursively descends … Read more