No valid numeric data in input column(s). Bad data interval. Phase Amplitude Imaginary part Real part Do you really want to overwrite these columns ? Time interval: ^0 s. Time range: ^0 s. time normalization Warning: empty cells replaced by 0. x(t) This list is too small to contain the resulting ^0 datapoints. Resize it first. Input '^0', '^1' : ^2 points. Not enough input data. Inverse Fourier transform: Frequency interval: ^0 Hz. Nyquist crytical frequency: ^0 Hz. frequency phase amplitude imaginary real FFT Calculating: Preparing data