Double Fourier Series Surface Plotting 1.0

Date Added: June 14, 2013 | Visits: 413

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Program FFT2SURF plots double Fourier series representations for several different surfaces. The figures show effects of the number of series terms and use of Lanczos sigma factors to smooth Gibbs oscillations. The Fourier series of a doubly periodic function with periods px and py has the approximate form: f(x,y) = sum( exp(2i*pi/px*k*x)*c(k,m)*exp(2i*pi/py*m*y),... k=-n:n, m=-n:n) If the function has discontinuities, a better approximation can sometimes be produced by using a smoothed function fa(x,y) obtained by local averaging of f(x,y) as follows: fa(x,y) = integral(f(x+u,y+v)*du*dv, -s

Requirements: No special requirements

Platforms: Matlab

Keyword: Agree, Applied, Averaging, Chapter, Closely, Fraction, Integralfx Buy Bvdudv, Local, Minpxpy, Obtained, Piskpx Pismpy, Sinsin Piskpxsin Pismpy, Sltult, Sltvlt, Small, Smoothed

Users rating: 0/10

License: Freeware

Size: 10 KB

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