Numpy

• Universal operations: operations that are applied to all elements.

• These operations include arithmetic operations, comparisons (=, <, >), sin/cos, and more.

• 

• np._ix()

  • Useful when selecting indices for each dimension.

Python code:

# The following two are equivalent.
print(a[np.ix_([0, 2], [1, 3])])
print(a[[[0], [2]], [1, 3]])

#gci2020