Hi,
It refers to the number of neighbouring voxels that are counted
when looking for connected clusters. The value of 26 means that
all voxels in the 3x3x3 neighbourhood (excluding the centre) are
used - which includes diagonal connections. If you didn't want
diagonal connections you could force it to only use edge connections
by having connectivity set to 6.
All the best,
Mark
On 24 Apr 2008, at 02:52, Yoshiko Yamada wrote:
> Dear List,
>
> In the FEAT "cluster" command line, "connectivity" is set for 26. What
> exactly does this number mean? (I'm using FSL v. 3.) I searched in the
> archive but wasn't able to find relevant information.
>
> Thank you in advance for your information!
>
> -Yoshiko
>
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