Type Definition ndarray::IxDyn
[−]
[src]
type IxDyn = Dim<IxDynImpl>;
dynamic-dimensional
You can use the IxDyn
function to create a dimension for an array with
dynamic number of dimensions. (Vec<usize>
and &[usize]
also implement
IntoDimension
to produce IxDyn
).
use ndarray::ArrayD; use ndarray::IxDyn; // Create a 5 × 6 × 3 × 4 array using the dynamic dimension type let mut a = ArrayD::<f64>::zeros(IxDyn(&[5, 6, 3, 4])); // Create a 1 × 3 × 4 array using the dynamic dimension type let mut b = ArrayD::<f64>::zeros(IxDyn(&[1, 3, 4])); // We can use broadcasting to add arrays of compatible shapes together: a += &b; // We can index into a, b using fixed size arrays: a[[0, 0, 0, 0]] = 0.; b[[0, 2, 3]] = a[[0, 0, 2, 3]]; // Note: indexing will panic at runtime if the number of indices given does // not match the array. // We can keep them in the same vector because both the arrays have // the same type `Array<f64, IxDyn>` a.k.a `ArrayD<f64>`: let arrays = vec![a, b];
Trait Implementations
impl Dimension for IxDyn
[src]
IxDyn is a "dynamic" index, pretty hard to use when indexing, and memory wasteful, but it allows an arbitrary and dynamic number of axes.
type SliceArg = [Si]
SliceArg
is the type which is used to specify slicing for this dimension. Read more
type Pattern = Self
Pattern matching friendly form of the dimension value. Read more
type Smaller = Self
Next smaller dimension (if applicable)
fn ndim(&self) -> usize
fn slice(&self) -> &[Ix]
fn slice_mut(&mut self) -> &mut [Ix]
fn into_pattern(self) -> Self::Pattern
Convert the dimension into a pattern matching friendly value.
fn zero_index(&self) -> Self
fn try_remove_axis(&self, axis: Axis) -> Self::Smaller
fn size(&self) -> usize
Compute the size of the dimension (number of elements)
fn size_checked(&self) -> Option<usize>
Compute the size while checking for overflow.
fn as_array_view(&self) -> ArrayView1<Ix>
Borrow as a read-only array view.
fn as_array_view_mut(&mut self) -> ArrayViewMut1<Ix>
Borrow as a read-write array view.
fn into_dyn(self) -> IxDyn
Convert the dimensional into a dynamic dimensional (IxDyn).
fn __private__(&self) -> PrivateMarker
This trait is private to implement; this method exists to make it impossible to implement outside the crate. Read more