Struct VerticallyStridedRowIndexMap 

pub struct VerticallyStridedRowIndexMap { /* private fields */ }

A vertical row-mapping strategy that selects every stride-th row from an inner matrix, starting at a fixed offset.

This enables vertical striding like selecting rows: offset, offset + stride, etc.

Implementations

impl VerticallyStridedRowIndexMap

pub fn new_view<T: Send + Sync + Clone, Inner: Matrix<T>>( inner: Inner, stride: usize, offset: usize, ) -> VerticallyStridedMatrixView<Inner>

Create a new vertically strided view over a matrix.

This selects rows in the inner matrix starting from offset, and then every stride rows after. Any choice of offset is valid. An offset at or past the inner height yields an empty view.

Arguments

• inner: The inner matrix to view.
• stride: The number of rows between each selected row.
• offset: The inner row index of the first selected row.

Panics

Panics if stride is zero.

Trait Implementations

impl Debug for VerticallyStridedRowIndexMap

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

Formats the value using the given formatter.

impl RowIndexMap for VerticallyStridedRowIndexMap

fn height(&self) -> usize

Returns the number of rows exposed by the mapping.

fn map_row_index(&self, r: usize) -> usize

Maps a visible row index r to the corresponding row index in the underlying matrix.

fn to_row_major_matrix<T: Clone + Send + Sync, Inner: Matrix<T>>( &self, inner: Inner, ) -> RowMajorMatrix<T>

Converts the mapped matrix into a dense row-major matrix.