NumPy, RuntimeWarning: invalid value encountered in power

by

Numpy does not seem to allow fractional powers of negative numbers, even if the power would not result in a complex number. (I actually had this same problem earlier today, unrelatedly). One workaround is to use

np.sign(a) * (np.abs(a)) ** (1 / 3)

More Related Contents:

  1. difference between arrays in numpy
  2. value error in python script
  3. How to print the full NumPy array, without truncation?
  4. Rank items in an array using Python/NumPy, without sorting array twice
  5. Numpy array assignment with copy
  6. Repeating each element of a numpy array 5 times
  7. Bin elements per row – Vectorized 2D Bincount for NumPy
  8. Calculate weighted average using a pandas/dataframe
  9. How do I select elements of an array given condition?
  10. Comparing previous row values in Pandas DataFrame
  11. Numpy argsort – what is it doing?
  12. Ambiguity in Pandas Dataframe / Numpy Array “axis” definition
  13. How to create a numpy array of arbitrary length strings?
  14. Subsetting a 2D numpy array
  15. How to normalize a 2-dimensional numpy array in python less verbose?
  16. Counting unique values in a column in pandas dataframe like in Qlik?
  17. How to get a normal distribution within a range in numpy? [duplicate]
  18. Annotate Time Series plot in Matplotlib
  19. Removing elements from an array that are in another array
  20. How can I count the number of consecutive TRUEs in a DataFrame?
  21. check for identical rows in different numpy arrays
  22. read matlab v7.3 file into python list of numpy arrays via h5py
  23. Installing numpy on Docker Alpine
  24. How to center labels in histogram plot
  25. module ‘pandas’ has no attribute ‘read_csv
  26. Weighted random sample without replacement in python
  27. Add numpy array as column to Pandas data frame
  28. Fit mixture of two gaussian/normal distributions to a histogram from one set of data, python
  29. Why is NaN considered as a float?
  30. NumPy library ImportError: DLL load failed: The specified procedure could not be found

Leave a Comment