Hi,
The -D option tests each column of your design by checking if
the sum of the values is 0 ( allowing for a small threshold either
way ). It's possible the sum of your demeaned design is just over this
threshold and so the error message is reported.
Many Regards
Matthew
> Hi
> I tried searching the archive for posts regarding my question but
> i'm still not
> sure i know the answer, so:
> after using the -D flag in randomise i got the following warning:
> "you have
> demeaned your data but at least one design column has non zero mean,
> 3.99168e+7 permutations required for exhaustive test of t test 1
> doing 1000 randonm permutations..."
> what does it mean for my design detailed in previous mails?I
> demeaned all my
> EV's and used TFCE which i saw in archive posts can cause some
> problems
> with the -D flag ,can that be the problem?
> thanks again
> Reut
>
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