Hi Mark,
eddy_quad reports the % of outlier slices independently for each shell.
I.e., it is the ratio between the number of slices flagged as outliers (given the threshold you used as input) and the total number of slices for that shell.
You get more outliers for the lower b-shells because of the way that thresholding has been implemented for multi-shell data. You can find a nice explanation here:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=fsl;12467485.1811
Hope this helps, cheers,
Matteo
> On 2 Feb 2020, at 15:19, Mark Pinsk <[log in to unmask]> wrote:
>
> I think I see why this is now: Are % outliers higher in the b=1K shell because of the low number of samples in that shell (20 directions) ?
>
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