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. 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, nrow=3, … 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 … Read more
Method 1: Using the c() function To create a vector in R, the easiest way is to use the “c()” function. The c() function combines its arguments. rv <- c(11, 46) print(rv) Output [1] 11 46 You can see that we created a vector rv using the c() function. It has two elements, 11 and 46. … Read more
There are the following methods to print string and list in R. Using the “print()” function. Using the “cat()” function. Use the “str()” function. Method 1: Using the print() function An efficient and easiest way to print a string in R is to use the “print()” function. The print() is a built-in function that takes … Read more
There are the following methods to append multiple elements to a Vector in R. Using the “c()” function Using the “append()” function Using <<- operator Method 1: Using the c() function The c() is a built-in function that combines multiple elements into a single vector in R. rv <- c(11, 21, 46) fv <- c(rv, 18, … Read more
To convert a list to a numeric value in R, combine the “unlist()” function and the “as.numeric()” function. The “unlist()” function produces a vector that contains all the atomic components. The as.numeric() function returns a numeric value or converts any value to a numeric value. Syntax as.numeric(unlist(data)) Parameters data: It is the data is the … Read more
There are the following ways to convert a list to a data frame in R. Using as.data.frame() function Using List to a DataFrame using t() Convert Nested List to a DataFrame Convert Nested List to a DataFrame by Rows Use data.table Using tibble package Using dplyr package Method 1: Using the as.data.frame() function The as.data.frame() function checks if … Read more