Crate ndarray_csv[−][src]
Easily read and write homogeneous CSV data to and from 2D ndarrays.
extern crate csv; extern crate ndarray; extern crate ndarray_csv; use csv::{ReaderBuilder, WriterBuilder}; use ndarray::{Array, Array2}; use ndarray_csv::{Array2Reader, Array2Writer}; use std::error::Error; use std::fs::File; fn main() -> Result<(), Box<dyn Error>> { // Our 2x3 test array let array = Array::from(vec![1, 2, 3, 4, 5, 6]).into_shape((2, 3)).unwrap(); // Write the array into the file. { let file = File::create("test.csv")?; let mut writer = WriterBuilder::new().has_headers(false).from_writer(file); writer.serialize_array2(&array)?; } // Read an array back from the file let file = File::open("test.csv")?; let mut reader = ReaderBuilder::new().has_headers(false).from_reader(file); let array_read: Array2<u64> = reader.deserialize_array2((2, 3))?; // Ensure that we got the original array back assert_eq!(array_read, array); Ok(()) }
This project uses cargo-make for builds; to build,
run cargo make all
.
To prevent denial-of-service attacks, do not read in untrusted CSV streams of unbounded length;
this can be implemented with std::io::Read::take
.
Enums
ReadError |
Traits
Array2Reader | An extension trait; this is implemented by |
Array2Writer | An extension trait; this is implemented by |