Match and Reorder Vectors — match_and

Function to match a vector of values against another vector and reorder the original vector based on the matching indices.

match_and_reorder(x, values, y = NULL)

Arguments

x: A vector.
values: A vector containing the values to match against in x.
y: An optional vector matching in length to x to reorder - otherwise the function returns the indices for reordering.

Value

Either a vector of indices for reordering or the reordered output from the input y.

Examples

x <- rep( LETTERS[1:3], 3 )
values <- c( 'C', 'B', 'A' )
y <- rep( 1:3, 3 )
match_and_reorder( x, values, y )
#> [1] 3 3 3 2 2 2 1 1 1

set.seed( 111 ) # For reproducibility
# Example data frame
dtf_example <- data.frame(
  X = rep( 1:4, each = 2 ),
  Y = round( rnorm( 8 ), 2 )
)
# Resample with replacement from 'X'
shuffled_x <- sample( 1:4, size = 4, replace = TRUE )
# Create a reordered data frame based on the resampled values
dtf_shuffled <- data.frame(
  X = match_and_reorder( dtf_example$X, shuffled_x, dtf_example$X ),
  Y = match_and_reorder( dtf_example$X, shuffled_x, dtf_example$Y )
)