Struct MultiFunData 

#[non_exhaustive]
pub struct MultiFunData { /* private fields */ }

Multi-domain functional data container.

Holds several FdComponent blocks that may live on different domains (grids, lengths). The invariant shared across all components is that they must all record the same number of observations (data.nrows()). Each component keeps its own evaluation grid so that multi-domain data (e.g. temperature + precipitation observed at different densities) can coexist under a single object.

Constructed via MultiFunData::new, which validates both invariants:

1. All components must have data.nrows() == n_obs (equal observation count).
2. Each component must have argvals.len() == data.ncols().

Examples

use fdars_core::matrix::FdMatrix;
use fdars_core::multi_fdata::{FdComponent, MultiFunData};

let n = 8;
let comp_a = FdComponent {
    data: FdMatrix::zeros(n, 20),
    argvals: (0..20).map(|i| i as f64).collect(),
};
let comp_b = FdComponent {
    data: FdMatrix::zeros(n, 5),
    argvals: vec![0.0, 0.25, 0.5, 0.75, 1.0],
};
let mfd = MultiFunData::new(vec![comp_a, comp_b]).unwrap();
assert_eq!(mfd.n_obs(), n);
assert_eq!(mfd.n_components(), 2);

Implementations

impl MultiFunData

pub fn new(components: Vec<FdComponent>) -> Result<Self, FdarError>

Construct a validated multi-domain functional data container.

Invariants enforced

1. components must be non-empty.
2. All components must share the same observation count (data.nrows()).
3. Each component must satisfy argvals.len() == data.ncols().

Errors

• FdarError::InvalidParameter — components is empty.
• FdarError::InvalidDimension — observation count mismatch across components, or argvals.len() != data.ncols() for any component.

Examples

use fdars_core::matrix::FdMatrix;
use fdars_core::multi_fdata::{FdComponent, MultiFunData};

let comp = FdComponent {
    data: FdMatrix::zeros(3, 6),
    argvals: vec![0.0, 0.2, 0.4, 0.6, 0.8, 1.0],
};
let mfd = MultiFunData::new(vec![comp]).unwrap();
assert_eq!(mfd.n_obs(), 3);

pub fn n_obs(&self) -> usize

Number of observations shared by all components.

Panics

Never — components is always non-empty after MultiFunData::new.

pub fn n_components(&self) -> usize

Number of components.

pub fn component(&self, k: usize) -> Result<&FdComponent, FdarError>

Return a reference to the k-th component.

Errors

FdarError::InvalidParameter if k >= n_components().

pub fn argvals(&self, k: usize) -> Result<&[f64], FdarError>

Return a reference to the evaluation grid of the k-th component.

Errors

FdarError::InvalidParameter if k >= n_components().

Trait Implementations

impl Clone for MultiFunData

fn clone(&self) -> MultiFunData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MultiFunData

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

Formats the value using the given formatter.

impl PartialEq for MultiFunData

fn eq(&self, other: &MultiFunData) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MultiFunData