Trait WriteNpyExt

pub trait WriteNpyExt {
    // Required method
    fn write_npy<W: Write>(&self, writer: W) -> Result<(), WriteNpyError>;
}

Extension trait for writing ArrayBase to .npy files.

If writes are expensive (e.g. for a file or network socket) and the layout of the array is not known to be in standard or Fortran layout, it is strongly recommended to wrap the writer in a BufWriter. For the sake of convenience, this method calls .flush() on the writer before returning.

Example

use ndarray::{array, Array2};
use ndarray_npy::WriteNpyExt;
use std::fs::File;
use std::io::BufWriter;

let arr: Array2<i32> = array![[1, 2, 3], [4, 5, 6]];
let writer = BufWriter::new(File::create("array.npy")?);
arr.write_npy(writer)?;

Required Methods

fn write_npy<W: Write>(&self, writer: W) -> Result<(), WriteNpyError>

Writes the array to writer in .npy format.

This function is the Rust equivalent of numpy.save.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<A, S, D> WriteNpyExt for ArrayBase<S, D>

where A: WritableElement, S: Data<Elem = A>, D: Dimension,

fn write_npy<W: Write>(&self, writer: W) -> Result<(), WriteNpyError>

Implementors