This is a small Rust package for writing the NumPy file formats .npy
and .npz
. This package supports writing the following data types:
- Single floating points or integers
- Vectors of single floating points or integers
- N-dimensional arrays of single floating points or integers (via the
ndarray
feature) npz
files mapping string keys to any of the data types above (via thezip
feature)
Example of writing a .npy
file with integers:
use npy_writer::NumpyWriter;
use std::fs::File;
let mut f = File::create("out.npy").unwrap();
vec![3, 2, 1].write_npy(&mut f).unwrap();
With the feature ndarray
, you can write N-dimensional arrays like so:
let mut arr = Array3::zeros((2, 3, 4));
arr.write_npy(&mut f).unwrap();