Struct WaveletPacket 

pub struct WaveletPacket {
    pub coefficients: Vec<Vec<f64>>,
    pub levels: usize,
}

Wavelet packet decomposition tree.

Stores all sub-band coefficients produced by full wavelet packet decomposition up to a specified number of levels.

Fields

coefficients: Vec<Vec<f64>>

All node coefficient vectors in the packet tree (breadth-first order).

levels: usize

Number of decomposition levels.

Implementations

impl WaveletPacket

pub fn new_haar(signal: &[f64], levels: usize) -> Self

Build a wavelet packet decomposition using the Haar transform.

After construction, coefficients contains 2^levels leaf nodes.

pub fn new(signal: &[f64], levels: usize, family: WaveletFamily) -> Self

Build a wavelet packet decomposition using a specified wavelet family.

Uses the given WaveletFamily for all decomposition steps.

pub fn best_basis(&self) -> Vec<usize>

Return the index of the leaf node with highest energy (best basis heuristic).

pub fn best_basis_entropy(&self) -> Vec<usize>

Select the best basis using minimum Shannon entropy criterion.

Returns the indices of the leaf nodes forming the minimum-entropy basis. This implements a greedy search over the leaf nodes of the full packet tree.

pub fn energy_distribution(&self) -> Vec<f64>

Compute the energy (sum of squares) in each leaf node.

pub fn entropy_distribution(&self) -> Vec<f64>

Compute the Shannon entropy of each leaf node’s coefficients.

pub fn total_energy(&self) -> f64

Return the total energy across all leaf nodes.

Trait Implementations

impl Clone for WaveletPacket

fn clone(&self) -> WaveletPacket

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WaveletPacket

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

Formats the value using the given formatter.