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Double Fourier Series Surface Plotting 1.0

  Date Added: June 14, 2013  |  Visits: 206

Double Fourier Series Surface Plotting

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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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