NumPy Joining Array

 NumPy Joining Array

NumPy Joining Array means combining two or more arrays into a single array.
NumPy provides multiple functions to join arrays:

• concatenate()
•  stack()
•  hstack()
•  vstack()
•  dstack()
•  column_stack()

 1. Joining Using np.concatenate()

Output:

•  Works for 1D, 2D, 3D arrays
•  Must match dimension size except along joining axis.

 Concatenate 2D Arrays

 2. Joining Using stack()

Stack arrays along a new axis:

Output:

 Using axis

Output:

 3. hstack() — Join Horizontally (Row-wise)

Output:

 4. vstack() — Join Vertically (Column-wise)

Output:

 5. dstack() — Join Depth-wise (3D stacking)

Output:

 6. column_stack() — Stack Column Format

Output:

 Summary Table of Joining Methods

 Example Practice