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For example, I have a variable which point to a vector contains many elements in memory, I want to copy element in vector to a numpy array, what should I do except one by one copy? Thx

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can you give a concrete code example? – Alex Nov 14 '12 at 15:56
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a = np.asarray(vec) ? – tcaswell Nov 14 '12 at 16:00

2 Answers

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I am assuming that your vector can be represented like that:-

import array

x = array('l', [1, 3, 10, 5, 6])   # an array using python's built-in array module

Casting it as a numpy array will then be:-

import numpy as np

y = np.array(x)
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If the data is packed in a buffer in native float format:

a = numpy.fromstring(buf, dtype=float, count=N)
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