How can I clone a matrix view into an owned vector with nalgebra?

Question

pub type VecD = OVector<i32, Dyn>;

let a = VecD::from_vec(vec![0, 1, 2, 3]);
let b = a.view((0, 0), (2, 1)).clone_owned();

this works and I get b with Matrix<i32, Dyn, Dyn, VecStorage<i32, Dyn, Dyn>> type.

In contrast,

let b: VecD = a.view((0, 0), (2, 1)).clone_owned();

does not work and throws:

Type mismatch [E0308] expected `VecD`, but found `OMatrix<i32, Dyn, Dyn>`

How can I clone the matrix view into Matrix<i32, Dyn, Const<1>, VecStorage<i32, Dyn, Const<1>>> type?

Answer 1

Looks like generic_view() is what you want:

let b = a.generic_view((0, 0), (Dyn(2), Const::<1>)).clone_owned();