Calculating cumulative minimum with numpy arrays

Question

I\'d like to calculate the \"cumulative minimum\" array--basically, the minimum value of an array up to each index such as:

import numpy as np
nums = np.array([5         


        

Answer 1

For any 2-argument NumPy universal function, its accumulate method is the cumulative version of that function. Thus, numpy.minimum.accumulate is what you're looking for:

>>> numpy.minimum.accumulate([5,4,6,10,3])
array([5, 4, 4, 4, 3])