depth_median: Depth median

In gggda: A 'ggplot2' Extension for Geometric Data Analysis

Depth median

Description

Compute the depth median of a data set.

Usage

depth_median(x, notion = "zonoid", ...)

Arguments

x	Matrix of data whose depth median is to be calculated; see ddalpha::depth.().
notion	The name of the depth notion (shall also work with a user-defined depth function named "depth.<name>").
...	Additional parameters passed to the depth functions.

Details

This function is called internally by stat_bagplot() and can be passed to stat_center() but is also exported directly for data analysis.

Value

A one-row matrix of depth median coordinates.

Examples

# sample median
iris %>% 
  subset(select = -Species) %>% 
  depth_median()
# groupwise medians
iris %>% 
  split(~ Species) %>% 
  lapply(subset, select = -Species) %>% 
  lapply(depth_median) %>% 
  simplify2array() %>% t() %>% as.data.frame()

gggda documentation built on July 18, 2026, 5:07 p.m.