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How to calculate moving average using NumPy?
...y be is faster than FFT based methods:
EDIT Corrected an off-by-one wrong indexing spotted by Bean in the code. EDIT
def moving_average(a, n=3) :
ret = np.cumsum(a, dtype=float)
ret[n:] = ret[n:] - ret[:-n]
return ret[n - 1:] / n
>>> a = np.arange(20)
>>> moving_aver...
Bower and devDependencies vs dependencies
...ing, packaging scripts, documentation generation, etc.
dependencies are required for production use, and assumed required for dev as well.
Including devDependencies within dependencies, as you have it, won't be harmful; the module will just bundle more files (bytes) during the install - consuming ...
pandas: filter rows of DataFrame with operator chaining
...y , etc), but the only way I've found to filter rows is via normal bracket indexing
14 Answers
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Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
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I know this is an old question but synchronizing on "this" is considered in some circles to be an anti-pattern. The unintended consequence is that outside of the class someone can lock on an object reference that is equal to "this" and prevent ot...
JavaScript equivalent of PHP's in_array()
...n their utility packages. Check out jQuery's inArray and Prototype's Array.indexOf for examples.
jQuery's implementation of it is as simple as you might expect:
function inArray(needle, haystack) {
var length = haystack.length;
for(var i = 0; i < length; i++) {
if(haystack[i] =...
Counting inversions in an array
...earch. The number of inversions for this element will be one less than the index number of its position in B since every lower number that appears after the first element of A will be an inversion.
2a. accumulate the number of inversions to counter variable num_inversions.
2b. remove A[1] from ar...
how to make a specific text on TextView BOLD
...ng when in doubt. The int start is a number you define, which is the start index of the span. Try 0 for start, string.().size() for end.
– wtsang02
May 17 '17 at 19:16
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Entity Attribute Value Database vs. strict Relational Model Ecommerce
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What if you had a single table with indexes for text values 1-n, then in C# (in ram) map what you want to what you need. It would still work like an EAV, but the "matches" would be domain models. Sort of like a serialization, but you could use SQL selects on ...
How does one unit test routes with Express?
...be("Default Route", function(){
it("should provide the a title and the index view name", function(done){
routes.index({}, {
render: function (viewName) {
viewName.should.equal("index")
done()
}
})
})
})
...
pandas dataframe columns scaling with sklearn
...rying to select a column from a dataframe with multi-level columns (a MultiIndex) and will throw a keyerror.
– ken
Feb 7 '18 at 23:00
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