Struct SparsePattern 

pub struct SparsePattern {
    pub entries: Vec<(usize, usize)>,
    pub nrows: usize,
    pub n_cols: usize,
    pub row_indices: Vec<Vec<usize>>,
    pub col_indices: Vec<Vec<usize>>,
}

Represents a sparsity pattern

Fields

entries: Vec<(usize, usize)>

Non-zero entries as (row, col) pairs

nrows: usize

Number of rows

n_cols: usize

Number of columns

row_indices: Vec<Vec<usize>>

Row-wise non-zero indices

col_indices: Vec<Vec<usize>>

Column-wise non-zero indices

Implementations

impl SparsePattern

pub fn new(_nrows: usize, ncols: usize) -> Self

Create a new sparse pattern

pub fn add_entry(&mut self, row: usize, col: usize)

Add a non-zero entry

pub fn nnz(&self) -> usize

Get the number of non-zeros

pub fn sparsity(&self) -> f64

Get the sparsity ratio (fraction of zeros)

pub fn is_sparse(&self, threshold: f64) -> bool

Check if pattern is sparse enough to benefit from sparse methods

pub fn compute_coloring(&self) -> ColGrouping

Compute coloring for efficient Jacobian computation

Trait Implementations

impl Clone for SparsePattern

fn clone(&self) -> SparsePattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparsePattern

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

Formats the value using the given formatter.