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                | kmckenna8 | 
                Posted - 11/13/2017 : 1:50:49 PM  I'm trying to use Origin to do a Fast Fourier Transform, but my data are not evenly spaced. When I use the interpolation function, it does not result in data that are evenly spaced. How can I use the interpolation function to produce an evenly spaced dataset, so that I can process the data with a FFT? | 
               
              
                | 1   L A T E S T    R E P L I E S    (Newest First) | 
               
              
                | arstern | 
                Posted - 11/13/2017 : 4:44:57 PM  Hi, 
  It's possible that the interpolation is not working because when you select interpolate you are only interpolating the Y data. You might want to try to interpolating both X and Y data. 
  To interpolate the X data: 
  1.Select Analysis -> Interpolate.  2. With the dialog open select the Y column for X Range and select the X column for Y Range.
 
  
  -Aviel  OriginLab | 
               
             
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