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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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How do you know what to test when writing unit tests? [closed]
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How can I sort arrays and data in PHP?
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Given an array of numbers, return array of products of all other numbers (no division)
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Initialising an array of fixed size in python [duplicate]
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From ND to 1D arrays
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Use np.ravel (for a 1D view) or np.ndarray.flatten (for a 1D copy) or np.ndarray.flat (for an 1D iterator):
In [12]: a = np.array([[1,2,3], [4,5,6]])
In [13]: b = a.ravel()
In [14]: b
Out[14]: array([1, 2, 3, 4, 5, 6])
Note that ravel() ret...
pyplot scatter plot marker size
...d the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickly. If instead we have
# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(...
A weighted version of random.choice
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Since version 1.7.0, NumPy has a choice function that supports probability distributions.
from...