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How to export plots from matplotlib with transparent background?
...he keyword argument transparent=True to save the image as a png file.
In [30]: x = np.linspace(0,6,31)
In [31]: y = np.exp(-0.5*x) * np.sin(x)
In [32]: plot(x, y, 'bo-')
Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>]
In [33]: savefig('demo.png', transparent=True)
Result:
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What integer hash function are good that accepts an integer hash key?
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Knuth's multiplicative method:
hash(i)=i*2654435761 mod 2^32
In general, you should pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
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Difference between __str__ and __repr__?
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Check if the number is integer
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answered Aug 13 '10 at 13:18
JamesJames
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Best way of returning a random boolean value
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edited Aug 23 '15 at 7:45
answered Nov 4 '11 at 16:43
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How to switch to the new browser window, which opens after click on the button?
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I can confirm accepted solution consistently works in Chrome but not in IE. The new window handle is not recognized in IE. @Elmue is incorre...
Display current date and time without punctuation
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edited May 15 '18 at 10:13
answered Dec 12 '13 at 18:41
ja...
How to map calculated properties with JPA and Hibernate
...22. Column and formula elements (Hibernate Core documentation)
Section 2.4.3.1. Formula (Hibernate Annotations documentation)
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How does a Breadth-First Search work when looking for Shortest Path?
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edited Dec 1 '14 at 21:34
marzapower
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...s but rather IL:
IL_0001: ldnull
IL_0002: stloc.0 // s
IL_0003: ldloc.0 // s
IL_0004: callvirt System.String.get_Length
IL_0009: call System.Console.WriteLine
It is the callvirt opcode that throws the NullReferenceException and it does that when the first argument on...