Enum PaddingStrategy 

pub enum PaddingStrategy {
    Zero,
    CloneChannel(String),
    CloneNearest,
    InterpWeighted {
        k: usize,
    },
    Mirror,
    MeanRef,
    NoPadding,
}

How to synthesise EEG channels that are missing from the CSV.

Variants

Zero

Fill the missing channel with zeros. Its scalp position is taken from position_overrides, then the channel-position database, then the centroid of existing channels.

CloneChannel(String)

Clone the data from a specific named channel. Position of the new channel: position_overrides[missing] → database lookup of the missing channel name → centroid.

CloneNearest

Clone the data from whichever loaded channel is nearest (by Euclidean distance) to the missing channel’s known position. Position of the new channel: position_overrides[missing] → database lookup of the missing channel name → centroid.

InterpWeighted

Synthesise by inverse-distance–weighted averaging of the k nearest real channels. Uses all real channels when k ≥ number of real channels. This is a simple form of scalp-surface interpolation. Position: same as CloneNearest.

Fields

k: usize

Mirror

Copy the signal of the nearest real channel on the opposite hemisphere (the target channel’s X coordinate is negated to find the “mirror” point, then the closest real channel to that point is used). Useful for symmetric montages where the contralateral homologue is the best available substitute. Position: database → centroid.

MeanRef

Fill with the per-sample mean across all real channels. This is equivalent to injecting the common-average-reference (CAR) signal, which is the least-informative but spectrally neutral choice. Position: database → centroid.

NoPadding

No padding — channels that are absent from the CSV are silently dropped from the output instead of being synthesised.

The returned data will have fewer channels than target_channels when any targets are missing. The encoder handles variable-length inputs natively, so the resulting InputBatch is fully valid.

Trait Implementations

impl Clone for PaddingStrategy

fn clone(&self) -> PaddingStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PaddingStrategy

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

Formats the value using the given formatter.

impl Default for PaddingStrategy

fn default() -> Self

Returns the “default value” for a type.