is_most_centered {rearrr}

Find which data point is closest to the centroid

Description

Finds the data point with the shortest distance to the centroid.

To get the coordinates of the most centered data point, use most_centered() instead.

Usage

is_most_centered(..., na.rm = FALSE)

Arguments

...

Numeric vectors.

na.rm

Whether to ignore missing values. At least one data point must be complete. (Logical)

Value

Logical vector (TRUE/FALSE) indicating if a data point is the most centered.

Author(s)

Ludvig Renbo Olsen, [e-mail]

See Also

Other coordinate functions: centroid(), create_origin_fn(), midrange(), most_centered()

Examples

# Attach packages
library(rearrr)
library(dplyr)

# Set seed
set.seed(1)

# Create three vectors
x <- runif(10)
y <- runif(10)
z <- runif(10)

# Find the data point closest to the centroid
is_most_centered(x, y, z)

# Compare to coordinates for the most centered
most_centered(x, y, z)

#
# For data.frames
#

# Create data frame
df <- data.frame(
  "x" = x,
  "y" = y,
  "z" = z,
  "g" = rep(1:2, each = 5)
)

# Filter the data points
# closest to the centroid
df %>%
  dplyr::filter(is_most_centered(x, y, z))

# When 'df' is grouped
df %>%
  dplyr::group_by(g) %>%
  dplyr::filter(is_most_centered(x, y, z))

# Add as column
df %>%
  dplyr::group_by(g) %>%
  dplyr::mutate(mc = is_most_centered(x, y, z))