Binary random array with a specific proportion of ones?

by

Yet another approach, using np.random.choice:

>>> np.random.choice([0, 1], size=(10,), p=[1./3, 2./3])
array([0, 1, 1, 1, 1, 0, 0, 0, 0, 0])

More Related Contents:

  1. Creating same random number sequence in Python, NumPy and R
  2. Working with floating point NumPy arrays for comparison and related operations
  3. Generate random array of floats between a range
  4. Using numpy to build an array of all combinations of two arrays
  5. Find the row indexes of several values in a numpy array
  6. What are the differences between numpy arrays and matrices? Which one should I use?
  7. Working with big data in python and numpy, not enough ram, how to save partial results on disc?
  8. How to apply a disc shaped mask to a NumPy array?
  9. How to remove specific elements in a numpy array
  10. Shuffle an array with python, randomize array item order with python
  11. Find nearest indices for one array against all values in another array – Python / NumPy
  12. Get the position of the largest value in a multi-dimensional NumPy array
  13. Convert a 1D array to a 2D array in numpy
  14. Using Numpy Vectorize on Functions that Return Vectors
  15. How to extend an array in-place in Numpy?
  16. “In” operator for numpy arrays?
  17. Numpy: efficient way to generate combinations from given ranges
  18. Python: slicing a multi-dimensional array
  19. NumPy chained comparison with two predicates
  20. How to count values in a certain range in a Numpy array?
  21. Numpy array dimensions
  22. How to access a column in a list of lists in python
  23. Techniques for working with large Numpy arrays? [duplicate]
  24. Numpy select rows based on condition
  25. Sorting a python array/recarray by column
  26. Numpy Array Get row index searching by a row
  27. Resample a numpy array
  28. Creating a numpy array of 3D coordinates from three 1D arrays
  29. How to use Python multiprocessing Pool.map to fill numpy array in a for loop
  30. Is this the best way to add an extra dimension to a numpy array in one line of code?

Leave a Comment