DOC: add comment to parcel_analysis

matthew-brett · matthew-brett · commit 53751eeea952 · 2015-10-08T09:04:49.000-07:00
Comment for Alexis' changes.
diff --git a/nipy/algorithms/group/parcel_analysis.py b/nipy/algorithms/group/parcel_analysis.py
@@ -73,6 +73,7 @@ def _gaussian_energy(sigma):
     sigma = np.asarray(sigma)
     if sigma.size == 1:
         sigma = np.repeat(sigma, NDIM)
+    # Use kernel separability to save memory
     return np.prod([_gaussian_energy_1d(s) for s in sigma])
 
 
