Python array to 1-D Vector
numpy, python
Solution
In [15]: import numpy as np
In [16]: x = np.array([(9,), (1,), (1, 12), (9,), (8,)])
In [17]: np.concatenate(x)
Out[17]: array([ 9, 1, 1, 12, 9, 8])
Another option is `np.hstack(x)`, but for this purpose, `np.concatenate` is faster:
In [14]: x = [tuple(np.random.randint(10, size=np.random.randint(10))) for i in range(10**4)]
In [15]: %timeit np.hstack(x)
10 loops, best of 3: 40.5 ms per loop
In [16]: %timeit np.concatenate(x)
100 loops, best of 3: 13.6 ms per loop
Problem
Is there a pythonic way to convert a structured array to vector? For example: I'm trying to convert an array like: ``` [(9,), (1,), (1, 12), (9,), (8,)] ``` to a vector like: ``` [9,1,1,12,9,8] ```