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NumPy · Function

np.hstack

numpy.hstack joins NumPy arrays horizontally. It joins columns for multidimensional arrays and concatenates values for one-dimensional arrays.

Last updated

Since
1.24

Syntax

numpy.hstack(tup, *, dtype=None, casting='same_kind')

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  • concatenate
  • stack
  • block
  • vstack
  • dstack
  • column_stack
  • hsplit
  • unstack

Source: numpy.hstack — NumPy v2.5 Manual. Checked 2026-11-03.