I have data in log(time) domain (as picture shows), because fft always use in time domain only, then how can I use fft in matlab to transform log(time) data. thx w(z)

CodePudding user response：

1. resample to linear time,
2. interpolate to a uniformly spaced data,
3. fft.

You can do 1-2 using the build in interp1