All Forums  Origin Forum  Origin Forum  Correlate data with different sampling frequency

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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 StephFR[/i] [br]Hi, I'm using origin 8.0 on Vista and I need to do multiple comparison of dataset having different sampling frequency. For example I have a set of data where the sampling period is 10 ms and the other is 1 s and I need to do correlation between the 2. From what I understand the correlate function works on dataset having the same sampling frequency (please correct if I'm wrong?). So I want to decimate my data with 10 ms sampling into a 1 s set. I understand that to prevent aliasing I need to filter those data before doing the decimation, but then how to the decimation? How to keep 1 sample every 100 ? Thanks. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.