The “future_map2” Function in R

• Package: future

• Purpose: Parallel execution of a function over input data using futures.

• General class: Parallel computing

• Required argument(s):

• .x: Input data.

• .y: Input data.

• .f: The function to be applied.

• Notable optional arguments:

  • .progress: Whether to display a progress bar.

• Example:

• # Load the future package
  library(future)
  
  # Create input data
  data1 <- c(1, 2, 3)
  data2 <- c(4, 5, 6)
  
  # Apply a function in parallel using future_map2
  result <- future_map2(.x = data1, .y = data2, .f = function(x, y) x + y)
  
  # View the result
  print(result)

• This example demonstrates how to use the “future_map2” function from the future package to apply a function in parallel over two input data sets (.x and .y). The “.f” argument specifies the function to be applied, and “.progress” controls the display of a progress bar. The result is a list containing the output of the function applied to each pair of elements from the input data.