eccentricity_filter: Eccentric Lens

In mappeR: Construct and Visualize TDA Mapper Graphs

Eccentric Lens

Description

Compute eccentricity of data points.

Usage

eccentricity_filter(dists)

Arguments

dists

A distance matrix associated to a data frame. Can be a dist object or matrix.

Value

A vector of centrality measures, calculated per data point as the sum of its distances to every other data point, divided by the number of points.

Examples

# Generate some noisy data along a 2D curve
num_points = 100
P.data = data.frame(
  x = sapply(1:num_points, function(x)
    sin(x) * 10) + rnorm(num_points, 0, 0.1),
  y = sapply(1:num_points, function(x)
    cos(x) ^ 2 * sin(x) * 10) + rnorm(num_points, 0, 0.1)
)
P.dist = dist(P.data)

# Apply eccentricity filter
eccentricity = eccentricity_filter(P.dist)

mappeR documentation built on June 29, 2025, 1:07 a.m.