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adding noise to a signal in python

...umpy as np import matplotlib.pyplot as plt t = np.linspace(1, 100, 1000) x_volts = 10*np.sin(t/(2*np.pi)) plt.subplot(3,1,1) plt.plot(t, x_volts) plt.title('Signal') plt.ylabel('Voltage (V)') plt.xlabel('Time (s)') plt.show() x_watts = x_volts ** 2 plt.subplot(3,1,2) plt.plot(t, x_watts) plt.title...
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How to get datetime in JavaScript?

... function pad_2(number) { return (number < 10 ? '0' : '') + number; } function hours(date) { var hours = date.getHours(); if(hours > 12) return hours - 12; // Substract 12 hours when 13:00 and more return h...
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Node.js Mongoose.js string to ObjectId function

... talentedmrjonestalentedmrjones 4,97511 gold badge2323 silver badges2525 bronze badges 1 ...
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Rails formatting date

...lendar date, reduced accuracy, specific century %Y%j => 2007323 Ordinal date (basic) %Y-%j => 2007-323 Ordinal date (extended) %GW%V%u => 2007W471 Week date (basic) %G-W%V-%u => 2007-W47-1 ...
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VB.NET equivalent to C# var keyword [duplicate]

... UuDdLrLrSs 6,47577 gold badges3232 silver badges5353 bronze badges answered Mar 19 '10 at 15:42 Adam RobinsonAdam Robinson ...
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design a stack such that getMinimum( ) should be O(1)

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Naming convention for unique constraint

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Can scrapy be used to scrape dynamic content from websites that are using AJAX?

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Site stopped working in asp.net System.Web.WebPages.Razor.Configuration.HostSection cannot be cast t

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How can I convert comma separated string into a List

...ntation yes as the Select extension in this case returns IEnumerable<Int32> and it is not list. However list has a constructor accepting another collection as source. – Oybek Feb 15 '12 at 21:07 ...