Struct PersistenceDiagram 

pub struct PersistenceDiagram {
    pub points: Vec<PersistencePoint>,
    pub max_dimension: usize,
}

Persistence diagram: a collection of (birth, death) pairs per dimension.

A persistence diagram captures the topological features of a dataset across all scales, organized by homological dimension.

Fields

points: Vec<PersistencePoint>

All persistence points across all dimensions

max_dimension: usize

Maximum homological dimension computed

Implementations

impl PersistenceDiagram

pub fn new(max_dimension: usize) -> Self

Create an empty persistence diagram

pub fn add_point(&mut self, birth: f64, death: f64, dimension: usize)

Add a persistence point to the diagram

pub fn points_in_dimension(&self, dim: usize) -> Vec<&PersistencePoint>

Get all points in a specific homological dimension

pub fn finite_points(&self) -> Vec<&PersistencePoint>

Get all finite persistence points (non-essential features)

pub fn essential_points(&self) -> Vec<&PersistencePoint>

Get all essential points (infinite persistence)

pub fn total_persistence(&self, p: f64) -> f64

Compute the total persistence (sum of all finite persistence values)

pub fn filter_by_persistence(&self, min_persistence: f64) -> PersistenceDiagram

Filter points by minimum persistence threshold

pub fn len(&self) -> usize

Number of points in the diagram

pub fn is_empty(&self) -> bool

Whether the diagram is empty

pub fn to_barcode(&self) -> Barcode

Convert to barcode representation

pub fn betti_numbers_at(&self, filtration_value: f64) -> Vec<usize>

Get the Betti numbers (count of features) at a given filtration value

Trait Implementations

impl Clone for PersistenceDiagram

fn clone(&self) -> PersistenceDiagram

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PersistenceDiagram

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.