I am implementing hilbert huang transform but i am getting an error in getspline function that the matrix dimensions are not generic.Please someone help .

the code i am using is :

function imf = emd(x) x=wavread('naina');

% Empiricial Mode Decomposition (Hilbert-Huang Transform) % imf = emd(x) % Func : findpeaks x = transpose(x(:)); imf = []; while ~ ismonotonic(x) x1 = x; sd = Inf; while (sd > 0.1) | ~ isimf(x1) s1 = getspline(x1); s2 = -getspline(-x1); x2 = x1-(s1+s2)/2;

      sd = sum((x1-x2).^2)/sum(x1.^2);
      x1 = x2;
   end

   imf{end+1} = x1;
   x          = x-x1;
end
imf{end+1} = x;

% FUNCTIONS

function u = ismonotonic(x)

u1 = length(findpeaks(x))*length(findpeaks(-x)); if u1 > 0, u = 0; else, u = 1; end

function u = isimf(x)

N = length(x); u1 = sum(x(1:N-1).*x(2:N) < 0); u2 = length(findpeaks(x))+length(findpeaks(-x)); if abs(u1-u2) > 1, u = 0; else, u = 1; end

function s = getspline(x)

N = length(x); p = findpeaks(x); s = spline([0 p N+1],[0 x(p) 0],1:N);

[Adam]

https://uk.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Sidharth Pancholi]

lol :P