threshold_distance2: threshold_distance2

In jaredlander/distancethreshold: Computes the Distances Between Rows of a data.frame that Fall Under a Certain Threshold

threshold_distance2

Description

Computes the distance between rows of left_df (old data) and right_df (new data) and returns those that fall below threshold.

Usage

threshold_distance2(
  left_df,
  right_df,
  threshold,
  cols = c("x", "y"),
  id_col = "ID",
  extra_columns = NULL,
  as_dataframe = FALSE,
  check_id = FALSE,
  distance_type = c("euclidean", "haversine")
)

Arguments

left_df	data.frame old data to compare distances to
right_df	data.frame new data to check for points in left_df that are nearby
threshold	Maximum distance to return
cols	Names of columns of numeric data. The data will first be sorted on the first of these.
id_col	Name of column holding ID data
extra_columns	Names of other columns to expand into the results based on indices.
as_dataframe	logical if a list (default) or data.frame should be returned
check_id	Whether the ID variable should be checked for inclusion
distance_type	What distance function to use

Value

Either a list or data.frame showing which IDs matched with other IDs, the distance between them and the rows numbers where the pairs occured.

Author(s)

Michael Beigelmacher

Examples

left_df <- data.frame(
x = c(0, 1, 1, 0),
y = c(0, 1, 3, 2)
)

right_df <- data.frame(
   x = c(0, 0, 2),
   y = c(1, 3, 2)
)

threshold_distance2(left_df, right_df, threshold = 1.5, as_dataframe=FALSE)
threshold_distance2(left_df, right_df, threshold = 1.5, as_dataframe=TRUE)

jaredlander/distancethreshold documentation built on June 10, 2025, 1:56 a.m.