Usage: 1dBandpass [options] fbot ftop infile
infile is an AFNI *.1D file; each column is processed
- fbot = lowest frequency in the passband, in Hz
- [can be 0 if you want to do a lowpass filter only,]
but the mean and Nyquist freq are always removed ]
- ftop = highest frequency in the passband (must be > fbot)
[if ftop > Nyquist freq, then we have a highpass filter only]
You cannot construct a ‘notch’ filter with this program!
Output vectors appear on stdout; redirect as desired
Program will fail if fbot and ftop are too close for comfort
The actual FFT length used will be printed, and may be larger than the input time series length for the sake of efficiency.
Options:
-dt dd = set time step to ‘dd’ sec [default = 1.0]
- -ort f.1D = Also orthogonalize input to columns in f.1D
- [only one ‘-ort’ option is allowed]
-nodetrend = Skip the quadratic detrending of the input
-norm = Make output time series have L2 norm = 1
++ Compile date = Dec 16 2015
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