using System;

namespace NumSharp

{

public static partial class np

{

/// <summary>

/// Stack arrays in sequence vertically (row wise).<br></br>

/// This is equivalent to concatenation along the first axis after 1-D arrays of shape(N,) have been reshaped to(1, N). Rebuilds arrays divided by vsplit.

/// </summary>

/// <param name="tup">The arrays must have the same shape along all but the first axis. 1-D arrays must have the same length.</param>

/// <returns>The array formed by stacking the given arrays, will be at least 2-D.</returns>

/// <remarks>https://docs.scipy.org/doc/numpy/reference/generated/numpy.vstack.html</remarks>

public static NDArray vstack(params NDArray[] tup)

{

if (tup == null)

throw new ArgumentNullException(nameof(tup));

if (tup.Length == 0)

throw new ArgumentException("Value cannot be an empty collection.", nameof(tup));

tup = np.atleast_2d(tup);

return np.concatenate(tup, 0);

}

}

}