Kevin,
If by "extent" you mean surface area, try using the metric clustering
function. Use this feature after your functional volume has been
mapped to the surface. It will allow you to set a range of metric
values and a minimum surface area for clusters. Launch the dialog
using Attributes Menu->Metric->Clustering and Smoothing.
* Map your functional volume to the surface
* Select Attributes Menu->Metric->Clustering and Smoothing
* On the Metric Modification Dialog, set the input to the metric
column containing your functional data, set the output to a new column.
* Press the Clustering tab, press the round button on the left of
"Minimum Surface Area", and enter a value for the minimum surface
area of a cluster. Use the Cluster Values to select a range of
metric values for the clusters. Press the Apply button.
* Display the newly created metric column.
-----------------------------------
John Harwell
[EMAIL PROTECTED]
Department of Anatomy and Neurobiology
Washington University School of Medicine
660 S. Euclid Ave Box 8108
Saint Louis, MO 63110
On Aug 7, 2007, at 9:22 AM, Kevin Guise wrote:
Greetings
I've searched through previous postings and the caret documentation
but I am
unable to find any information regarding a method to set a minimum
cluster
extent threshold while projecting functional activation onto a
surface map.
Is this at all implemented in caret, or can anyone suggest an
equivalent
method?
Best
Kevin
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