ray.data.from_numpy

ray.data.from_numpy(ndarrays: numpy.ndarray | List[numpy.ndarray]) → MaterializedDataset

Creates a Dataset from a list of NumPy ndarrays.

The column name defaults to “data”.

Examples

>>> import numpy as np
>>> import ray
>>> arr = np.array([1])
>>> ray.data.from_numpy(arr)  
shape: (1, 1)
╭───────╮
│ data  │
│ ---   │
│ int64 │
╞═══════╡
│ 1     │
╰───────╯
(Showing 1 of 1 rows)

Create a Ray Dataset from a list of NumPy arrays.

>>> ray.data.from_numpy([arr, arr])  
shape: (2, 1)
╭───────╮
│ data  │
│ ---   │
│ int64 │
╞═══════╡
│ 1     │
│ 1     │
╰───────╯
(Showing 2 of 2 rows)

Parameters:

ndarrays – A NumPy ndarray or a list of NumPy ndarrays.

Returns:

Dataset holding data from the given ndarrays.