CODEWITHSUNDEEP
pythonnumpy
Shamoon
Shamoon

Reputation: 43531

How can I reduce a numpy array into bins with a max value per bin?

My array looks like: (212960,)

I want to split that up into 625 bins of equal length. Since 212960 / 625 isn't an integer, I don't really care about the remaining pieces.

For each bin, I want to fill it with whatever the max value is.

I feel like there's a .reshape needed, just not sure how to do it.

Upvotes: 1

Views: 276

Answers (1)

Quang Hoang
Quang Hoang

Reputation: 150745

Here's what I would do (and yes, with reshape):

# sample data
a = np.arange(212960)

bins = 625

max_size = (len(a)//bins) * bins

new_arr = a[:max_size].reshape(bins, -1).max(1)

Upvotes: 1

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