Function vstack

pub fn vstack<'a, T>(
    arrays: &[&'a dyn SparseArray<T>],
    format: &str,
) -> SparseResult<Box<dyn SparseArray<T>>>
where
    T: 'a + Float + Add<Output = T> + Sub<Output = T> + Mul<Output = T> + Div<Output = T> + Debug + Copy + 'static,

Stack sparse arrays vertically (row wise)

Arguments

• arrays - A slice of sparse arrays to stack
• format - Format of the output array (“csr” or “coo”)

Returns

A sparse array as a result of vertically stacking the input arrays

Examples

use scirs2_sparse::construct::eye_array;
use scirs2_sparse::combine::vstack;

let a: Box<dyn scirs2_sparse::SparseArray<f64>> = eye_array(2, "csr").unwrap();
let b: Box<dyn scirs2_sparse::SparseArray<f64>> = eye_array(2, "csr").unwrap();
let c = vstack(&[&*a, &*b], "csr").unwrap();

assert_eq!(c.shape(), (4, 2));
assert_eq!(c.get(0, 0), 1.0);
assert_eq!(c.get(1, 1), 1.0);
assert_eq!(c.get(2, 0), 1.0);
assert_eq!(c.get(3, 1), 1.0);