62
votes
16
answers
1.9K
views
Better way to shuffle two numpy arrays in unison
I have two numpy arrays of different shapes, but with the same length (leading dimension). I want to shuffle e
53
votes
5
answers
2.6K
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What is the difference between ndarray and array in numpy?
What is the difference between ndarray and array in Numpy? And where can I find the implementations in the num
58
votes
6
answers
1.9K
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Concatenating two one-dimensional NumPy arrays
I have two simple one-dimensional arrays in NumPy. I should be able to concatenate them using numpy.concatenat
62
votes
8
answers
1.2K
views
How to convert a PIL Image into a numpy array?
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do
54
votes
3
answers
2.6K
views
What is the difference between flatten and ravel functions in numpy?
import numpy as np y = np.array(((1,2,3),(4,5,6),(7,8,9))) OUTPUT: print(y.flatten()) [1 2 3 4 5 6
69
votes
7
answers
437
views
What is the purpose of meshgrid in Python / NumPy?
Can someone explain to me what is the purpose of meshgrid function in Numpy? I know it creates some kind of gr
65
votes
5
answers
2.6K
views
What are the advantages of NumPy over regular Python lists?
What are the advantages of NumPy over regular Python lists? I have approximately 100 financial markets series
68
votes
11
answers
1.3K
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What does -1 mean in numpy reshape?
A numpy matrix can be reshaped into a vector using reshape function with parameter -1. But I don't know w
51
votes
20
answers
2.3K
views
How do I get indices of N maximum values in a NumPy array?
NumPy proposes a way to get the index of the maximum value of an array via np.argmax. I would like a similar
