hilbert1 Analytic extension of real valued signal. h= hilbert1(f) h= hilbert1(f,N) h= hilbert1(f,N,dim) f: real or complex valued scalar or vector N: The result will have length N dim : It analyses the input in this dimension h = hilbert1 (f) computes the extension of the real valued signal f to an analytic signal. If f is a matrix, the transformation is applied to each column. For N-D arrays, the transformation is applied to the first non-singleton dimension. real (h) contains the original signal f. imag (h) contains the Hilbert transform of f. hilbert1 (f, N) does the same using a length N Hilbert transform. The result will also have length N. hilbert1 (f, [], dim) or hilbert1 (f, N, dim) does the same along dimension dim.