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How do I obtain the frequencies of each value in an FFT?
... where Fs is the sample rate and N is the size of the FFT. The next bin is 2 * Fs / N. To express this in general terms, the nth bin is n * Fs / N.
So if your sample rate, Fs is say 44.1 kHz and your FFT size, N is 1024, then the FFT output bins are at:
0: 0 * 44100 / 1024 = 0.0 Hz
1: ...
Replace values in list using Python [duplicate]
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207
Build a new list with a list comprehension:
new_items = [x if x % 2 else None for x in items]...
How to profile a bash shell script slow startup?
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132
If you have GNU date (or another version that can output nanoseconds), do this at the beginning ...
With bash, how can I pipe standard error into another process?
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172
There is also process substitution. Which makes a process substitute for a file.
You can send s...
How do I calculate percentiles with python/numpy?
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294
You might be interested in the SciPy Stats package. It has the percentile function you're afte...
How do I extract a sub-hash from a hash?
...main the same:
h1 = {:a => :A, :b => :B, :c => :C, :d => :D}
h2 = h1.select {|key, value| [:b, :d, :e, :f].include?(key) } # => {:b=>:B, :d=>:D}
h1 = Hash[h1.to_a - h2.to_a] # => {:a=>:A, :c=>:C}
And if you want to patch that into the Hash class:
class Hash
def ...
Compare two List objects for equality, ignoring order [duplicate]
... before comparing:
Enumerable.SequenceEqual(list1.OrderBy(t => t), list2.OrderBy(t => t))
Edit:
Here is a solution that performs a bit better (about ten times faster), and only requires IEquatable, not IComparable:
public static bool ScrambledEquals<T>(IEnumerable<T> list1, IE...
Regular expressions in C: examples?
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238
Regular expressions actually aren't part of ANSI C. It sounds like you might be talking about ...
What would cause an algorithm to have O(log log n) complexity?
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