Is this the best way to add an extra dimension to a numpy array in one line of code?

by

It’s easier like this:

k.reshape(k.shape + (1,))

But if all you want is to add an empty dimension at the end, you should use numpy.newaxis:

import numpy as np
k = k[..., np.newaxis]

or 

k = k[..., None]

(See the documentation on slicing).

More Related Contents:

  1. Intuition and idea behind reshaping 4D array to 2D array in NumPy
  2. Reshape an array in NumPy
  3. load csv into 2D matrix with numpy for plotting
  4. How to print the full NumPy array, without truncation?
  5. Convert Python sequence to NumPy array, filling missing values
  6. Numpy array assignment with copy
  7. numpy matrix vector multiplication [duplicate]
  8. Repeating each element of a numpy array 5 times
  9. how does multiplication differ for NumPy Matrix vs Array classes?
  10. Conditionally fill column values based on another columns value in pandas
  11. Ambiguity in Pandas Dataframe / Numpy Array “axis” definition
  12. How to create a numpy array of arbitrary length strings?
  13. Numpy modify array in place?
  14. Subsetting a 2D numpy array
  15. How to normalize a 2-dimensional numpy array in python less verbose?
  16. What is the difference between ndarray and array in NumPy?
  17. Removing elements from an array that are in another array
  18. Stocking large numbers into numpy array
  19. check for identical rows in different numpy arrays
  20. pd.Timestamp versus np.datetime64: are they interchangeable for selected uses?
  21. Numpy: For every element in one array, find the index in another array
  22. Prevent numpy from creating a multidimensional array
  23. Inverting a numpy boolean array using ~
  24. Cannot understand numpy argpartition output
  25. Using numpy ‘module’ object has no attribute ‘array’ [duplicate]
  26. Python: Split NumPy array based on values in the array
  27. Python, OpenCV: Increasing image brightness without overflowing UINT8 array
  28. Append 2D array to 3D array, extending third dimension
  29. Working with floating point NumPy arrays for comparison and related operations
  30. Mapping a NumPy array in place

Leave a Comment