title: Wavelet decomposition for non-uniform 2D data sequences
body: <p>I have a list which is almost surely some sort of a wave-like oscillation:</p>
  
  <p><code>y(x): {{x_1, y_1}, ...,{x_n, y_n}}</code></p>
  
  <p>and want to find wavelets that interpolate this data best using Mathematica. However, Mathematica's wavelet toolbox accepts standard sequential (uniform) series rather than non-uniform grids.</p>
  
  <p>Possible solutions are either to firstly interpolate <code>y</code> to a uniform <code>x</code> grid and then proceed with wavelet decomposition or to find a fit to wavelet functions explicitly using FindFit routines without referring to the toolbox.</p>
  
  <p>Is there any other solutions? </p>