PPI downsample error

In https://afni.nimh.nih.gov/CD-CorrAna,
And in the end you may need to down-sample the interaction time series back to TR grids by running

1dcat Inter_A.1D’{0…$(xx)}’ > Inter_Ad.1D

However, this code cannot downsample, but extract numbers from 0 to xx.

Did you actually try this? It works fine.

1deval -num 20 -expr t > t.1D
1dcat t.1D’{0…$(4)’

What problem are you running into?

  • rick