ak.concatenate¶
Defined in awkward.operations.structure on line 1455.
- ak.concatenate(arrays, axis=0, merge=True, mergebool=True, highlevel=True, behavior=None)¶
- Parameters
arrays – Arrays to concatenate along any dimension.
axis (int) – The dimension at which this operation is applied. The outermost dimension is
0
, followed by1
, etc., and negative values count backward from the innermost:-1
is the innermost dimension,-2
is the next level up, etc.merge (bool) – If True, combine data into the same buffers wherever possible, eliminating unnecessary
ak.layout.UnionArray8_64
types at the expense of materializingak.layout.VirtualArray
nodes.mergebool (bool) – If True, boolean and nummeric data can be combined into the same buffer, losing information about False vs
0
and True vs1
; otherwise, they are kept in separate buffers with distinct types (using anak.layout.UnionArray8_64
).highlevel (bool) – If True, return an
ak.Array
; otherwise, return a low-levelak.layout.Content
subclass.behavior (None or dict) – Custom
ak.behavior
for the output array, if high-level.
Returns an array with arrays
concatenated. For axis=0
, this means that
one whole array follows another. For axis=1
, it means that the arrays
must have the same lengths and nested lists are each concatenated,
element for element, and similarly for deeper levels.