FIX: Fitting

larsoner · Apr 25, 2023 · f9b54c0 · f9b54c0
1 parent 6e3aed1
commit f9b54c0
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/mne/surface.py b/mne/surface.py
@@ -234,7 +234,11 @@ def _scale_helmet_to_sensors(system, surf, info):
     to = np.array(to, float)
     interp = _MatchedDisplacementFieldInterpolator(fro, to)
     new_rr = interp(surf['rr'])
-    quat, sc = _fit_matched_points(surf['rr'], new_rr)
+    try:
+        quat, sc = _fit_matched_points(surf['rr'], new_rr)
+    except np.linalg.LinAlgError:
+        logger.info('Using CAD helmet because fitting failed')
+        return surf
     rot = np.rad2deg(_angle_between_quats(quat[:3]))
     tr = 1000 * np.linalg.norm(quat[3:])
     logger.info(