Struct FeatureMatrix 

pub struct FeatureMatrix {
    pub names: Vec<String>,
    pub data: Vec<f64>,
    pub n_rows: usize,
}

Named feature matrix: one row per observation, one column per feature.

Fields

names: Vec<String>

Feature names (column headers).

data: Vec<f64>

Row-major matrix: data[row * n_features + col].

n_rows: usize

Number of rows.

Implementations

impl FeatureMatrix

pub fn n_features(&self) -> usize

Number of features (columns).

pub fn column(&self, idx: usize) -> Vec<f64>

Get a feature column by index (returns a Vec<f64> copy).

pub fn column_by_name(&self, name: &str) -> Option<Vec<f64>>

Get a feature column by name.

Trait Implementations

impl Clone for FeatureMatrix

fn clone(&self) -> FeatureMatrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureMatrix

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

Formats the value using the given formatter.