Okay, I got a lot of advice but still not sure what to do. Unfortunately I don't have matlab. At the moment I'm working with excel and excelstat which allows me to do FFT and spectral analysis.
How do I design a notch filter or a highpass filter in excel with a frequency of 1/12 hr?
Baby...
Hi
I am working with current meter data (oceanographic) and have to filter my timeseries to remove the tidal component (frequency 12h). I have not worked with filters before and would appreciate any help.
Thanks