Hi - all the stats values within the mask are weighted (before being used
to calculate min, mean, max etc) when you turn on the weighting button -
hence all the output stats values can potentially change, including the
max.
Cheers.
On Tue, 13 Sep 2005, Armin Biller wrote:
> Hi there,
>
> using featquery, I found the max-value (of, for example, PE/COPE values
> converted to %) to be changed when weighting is allowed (i.e. when the
> mask is not binarised). I see why median etc. should change, but I miss
> the point why weighting should affect max and min. Does it make sense to
> report max % changes estimated from weighted mask at all? Any
> considerations would be very helpful to me.
>
> Thanks a lot in advance!
>
> Ciao,
> Armin
>
--
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
|