Fix stc_near_sensors error

doc/changes/devel/12436.bugfix.rst

@@ -0,0 +1 @@
+Fix :ref:`tut-working-with-seeg` use of :func:`mne.stc_near_sensors` to use the :class:`mne.VolSourceEstimate` positions and not the pial surface, by `Alex Rockhill`_

mne/source_estimate.py

@@ -3879,8 +3879,11 @@ def stc_near_sensors(
     if surface == "auto":
         if src is not None:
             pial_fname = op.join(subjects_dir, subject, "surf", "lh.pial")
-            src_surf_is_pial = op.isfile(pial_fname) and np.allclose(
-                src[0]["rr"], read_surface(pial_fname)[0]
+            pial_rr = read_surface(pial_fname)[0]
+            src_surf_is_pial = (
+                op.isfile(pial_fname)
+                and src[0]["rr"].shape == pial_rr.shape
+                and np.allclose(src[0]["rr"], pial_rr)
             )
             if not src_surf_is_pial:
                 warn(
@@ -3890,7 +3893,7 @@ def stc_near_sensors(
                     "or ``surface=None`` to suppress this warning",
                     DeprecationWarning,
                 )
-        surface = "pial"
+        surface = "pial" if src is None or src.kind == "surface" else None
 
     # create a copy of Evoked using ecog, seeg and dbs
     if picks is None:

tutorials/clinical/20_seeg.py

@@ -212,8 +212,14 @@
 
 evoked = epochs.average()
 stc = mne.stc_near_sensors(
-    evoked, trans, "fsaverage", subjects_dir=subjects_dir, src=vol_src, verbose="error"
-)  # ignore missing electrode warnings
+    evoked,
+    trans,
+    "fsaverage",
+    subjects_dir=subjects_dir,
+    src=vol_src,
+    surface=None,
+    verbose="error",
+)
 stc = abs(stc)  # just look at magnitude
 clim = dict(kind="value", lims=np.percentile(abs(evoked.data), [10, 50, 75]))