Struct SparseMatrixRef 

pub struct SparseMatrixRef<'a, T, N, I> {
    pub maj_ind: &'a [N],
    pub min_ind: &'a [I],
    pub val: &'a [T],
    pub n_rows: usize,
    pub n_cols: usize,
}

A lightweight reference-based representation of a sparse matrix (CSR or CSC).

This structure is designed to be agnostic of the underlying container and can be easily used with raw vectors from other crates or FFI (like PyO3).

Fields

maj_ind: &'a [N]

Major indices (e.g., indptr in CSR/CSC)

min_ind: &'a [I]

Minor indices (e.g., column indices in CSR, row indices in CSC)

val: &'a [T]

The actual values in the matrix

n_rows: usize

Number of rows in the matrix

n_cols: usize

Number of columns in the matrix

Implementations

impl<'a, T, N, I> SparseMatrixRef<'a, T, N, I>

where T: FloatOpsTS, N: AsPrimitive<usize> + Send + Sync, I: AsPrimitive<usize> + Send + Sync,

pub fn new( maj_ind: &'a [N], min_ind: &'a [I], val: &'a [T], n_rows: usize, n_cols: usize, ) -> Self

Create a new SparseMatrixRef

pub fn get_major(&self, idx: usize) -> (&'a [I], &'a [T])

Get the data for a specific major index (row in CSR, column in CSC)

pub fn get_entry(&self, row: usize, col: usize) -> T

Get a specific entry (row, col) from the sparse matrix.

This assumes CSR format (row is major index).

Trait Implementations

impl<'a, T: Clone, N: Clone, I: Clone> Clone for SparseMatrixRef<'a, T, N, I>

fn clone(&self) -> SparseMatrixRef<'a, T, N, I>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug, N: Debug, I: Debug> Debug for SparseMatrixRef<'a, T, N, I>

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

Formats the value using the given formatter.

impl<'a, T, N, I> MatrixStatTests<T> for SparseMatrixRef<'a, T, N, I>

where T: FloatOpsTS, N: AsPrimitive<usize> + Send + Sync, I: AsPrimitive<usize> + Send + Sync, f64: From<T>,

fn t_test( &self, group1_indices: &[usize], group2_indices: &[usize], test_type: TTestType, ) -> Result<Vec<TestResult<f64>>>

Perform t-tests comparing two groups of cells for all genes.

fn mann_whitney_test( &self, group1_indices: &[usize], group2_indices: &[usize], alternative: Alternative, ) -> Result<Vec<TestResult<f64>>>

Perform Mann-Whitney U tests comparing two groups of cells for all genes.

fn fisher_exact_test( &self, group1_indices: &[usize], group2_indices: &[usize], alternative: Alternative, ) -> Result<Vec<TestResult<T>>>

Perform Fisher’s Exact tests comparing expression frequency between two groups.

fn differential_expression( &self, group_ids: &[usize], test_method: TestMethod, ) -> Result<MultipleTestResults<f64>>

Comprehensive differential expression analysis with multiple testing correction.

impl<'a, T: Copy, N: Copy, I: Copy> Copy for SparseMatrixRef<'a, T, N, I>