Enum DensityError 

pub enum DensityError {
    EmptyInput,
    SinglePoint,
    ZeroVariance,
    NonFinite,
}

Errors that prevent a Gaussian KDE from being fitted.

Returned (never panicked) so callers stay clear of the crate’s unwrap/panic lint gate and can surface a clean diagnostic.

Variants

EmptyInput

The sample was empty, so no density can be estimated.

SinglePoint

The sample had only one observation, so its variance — and hence Scott’s bandwidth — is undefined (degenerate).

ZeroVariance

Every observation was identical (zero variance), so the bandwidth collapses to zero and the estimate is a degenerate spike.

NonFinite

An observation was non-finite (NaN or ±∞), which has no valid density.

Trait Implementations

impl Clone for DensityError

fn clone(&self) -> DensityError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DensityError

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

Formats the value using the given formatter.

impl Display for DensityError

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

Formats the value using the given formatter.

impl Eq for DensityError

impl Error for DensityError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for DensityError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DensityError