extract_persistence_pairs: This function extracts the persistence from combining the...

In SimplicialComplex: Topological Data Analysis: Simplicial Complex

This function extracts the persistence from combining the boundary matrix and its filtration

Description

This function extracts the persistence from combining the boundary matrix and its filtration

Usage

extract_persistence_pairs(filist, last_1, pivot_owner)

Arguments

filist	Filtration list, each element includes simplex and time.
last_1	The last 1 row index for each column in boundary matrix.
pivot_owner	The column index owning the pivot row.

Value

A data frame with columns: dimension, birth, and death.

Examples

points <- matrix(c(0, 1, 1, 0, 0, 0, 1, 1), ncol = 2)
filtration <- build_vr_filtration(points, eps_max=1.2)
res <- boundary_info(filtration)
pairs <- extract_persistence_pairs(filtration, res$last_1, res$pivot_owner)

SimplicialComplex documentation built on Nov. 5, 2025, 7:40 p.m.