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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by kmckenna8[/i] [br]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? [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.