AFNI program: 1dUpsample
Output of -help
Upsamples a 1D time series (along the column direction)
to a finer time grid.
Usage: 1dUpsample [options] n fred.1D > ethel.1D
Where 'n' is the upsample factor (integer from 2..32)
* Interpolation is done with 7th order polynomials.
(Why 7? It's a nice number, and the code already existed.)
* The only option is '-1' or '-one', to use 1st order
polynomials instead (i.e., linear interpolation).
* Output is written to stdout.
* If you want to interpolate along the row direction,
transpose before input, then transpose the output.
1dUpsample 5 '1D: 4 5 4 3 4' | 1dplot -stdin -dx 0.2
* If the input has M time points, the output will
have n*M time points. The last n-1 of them
will be past the end of the original time series.
* This program is a quick hack for Gang Chen.
Where are my Twizzlers?
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Tue Sep 26 11:46:43 EDT 2023