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How to smooth a curve in the right way?
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y = np.sin(x) + np.random.random(100) * 0.2
yhat = savitzky_golay(y, 51, 3) # window size 51, polynomial order 3
plt.plot(x,y)
plt.plot(x,yhat, color='red')
plt.show()
UPDATE: It has come to my attention that the cookbook example I linked to has been taken down. Fortunately, the Savitzky-Gola...
Jackson: how to prevent field serialization
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edited May 13 '18 at 10:32
narendra-choudhary
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How to create a video from images with FFmpeg?
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ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is tha...
Find index of last occurrence of a substring in a string
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Use .rfind():
>>> s = 'hello'
>>> s.rfind('l')
3
Also don't use str as variable name or you'll shadow the built-in str().
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Why can a function modify some arguments as perceived by the caller, but not others?
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jfsjfs
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What is the difference between gsub and sub methods for Ruby Strings
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Ray ToalRay Toal
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psycopg2: insert multiple rows with one query
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Alex Riley
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answered Apr 13 '12 at 19:53
ant32ant32
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Check if string matches pattern
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import re
pattern = re.compile("^([A-Z][0-9]+)+$")
pattern.match(string)
Edit: As noted in the...
Java switch statement: Constant expression required, but it IS constant
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How to increase scrollback buffer size in tmux?
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