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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 bharat123[/i] [br]Hello, I am trying to do Fourier transform using FFT on my data. I have exponential decay data. I am confused on the frequency unit (what is frequency here, is it f or omega and unit is Hz or rad/sec), I don't understand how it calculates the frequency. And why am I getting the results on half of my data, meaning that if I have 1000 values, frequency shows only 500 data. Appreciate your help. Thank you. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.