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python Programming Glossary: derivativesSpeeding up a closest point on a hyperbolic paraboloid algorithm http://stackoverflow.com/questions/18858448/speeding-up-a-closest-point-on-a-hyperbolic-paraboloid-algorithm result Compute the length of that vector p s 2 take its derivatives w.r.t. u and v and equate them to zero. Compute two vectors..
Python finite difference functions? http://stackoverflow.com/questions/18991408/python-finite-difference-functions accuracy but not so much if you're wanting higher order derivatives or more accurate methods. I haven't even found very many specific.. Note that I am talking about finite differences not derivatives. I've seen both scipy.misc.derivative and Numdifftools which.. 1 x 0 # use np.diff x if x is not uniform dxdx dx 2 #First derivatives df np.diff f dx cf np.convolve f 1 1 dx gf ndimage.gaussian_filter1d..
Python OpenCV: Detecting a general direction of movement? http://stackoverflow.com/questions/4496063/python-opencv-detecting-a-general-direction-of-movement direction. I have modified a motion tracking script but derivatives are getting me nowhere # usr bin env python import cv numpy..
Python's os.path choking on Hebrew filenames http://stackoverflow.com/questions/497233/pythons-os-path-choking-on-hebrew-filenames Some important observations here Windows XP like all NT derivatives stores all filenames in unicode os.listdir and similar functions..
http://stackoverflow.com/questions/7906126/spline-representation-with-scipy-interpolate-poor-interpolation-for-low-amplitu for the purpose of interpolation the function to take the derivatives. However it seems that there's an inherent problem in the spline..
What's the difference between dist-packages and site-packages? http://stackoverflow.com/questions/9387928/whats-the-difference-between-dist-packages-and-site-packages a Debian specific convention that is also present in its derivatives like Ubuntu. Modules are installed to dist packages when they..
How do i compute derivative using Numpy? http://stackoverflow.com/questions/9876290/how-do-i-compute-derivative-using-numpy You can use Symbolic Differentiation You can compute derivatives by hand. Finite differences require no external tools but are.. out Jensen's blogpost about a similar question . Automatic derivatives are very cool aren't prone to numeric errors but do require..
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