Hi all,
I used FSLmaths randomise to compare differences between two groups.
I got the following warning at the 53th permutation. I guess my design matrix should be correct? I have 4 samples in one group, and 15 samples in the other group. Could it be that the size of the first group is too small? Could you please let me know what I might have missed? Thank you so much.
Warning: tfce has detected a large number of integral steps. This operation may require a great deal of time to complete.
....
Starting permutation 50
statistic Maximum: 2.31699
Starting permutation 51
statistic Maximum: 6.34533
Starting permutation 52
statistic Maximum: 2.02243
Starting permutation 53
statistic Maximum: 9.24119e+15
Warning: tfce has detected a large number of integral steps. This operation may require a great deal of time to complete.
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