Fix EEGLAB import (nodatchans) (mne-tools#13097)

cbrnr · larsoner · web-flow · commit 9e7fe95f9901 · 2025-02-03T13:46:22.000-05:00
Co-authored-by: Eric Larson &lt;larson.eric.d@gmail.com&gt;
diff --git a/doc/changes/devel/13097.bugfix.rst b/doc/changes/devel/13097.bugfix.rst
@@ -0,0 +1 @@
+Fix bug when loading certain EEGLAB files that do not contain a ``nodatchans`` field, by `Clemens Brunner`_.
diff --git a/mne/io/eeglab/eeglab.py b/mne/io/eeglab/eeglab.py
@@ -162,7 +162,7 @@ def _get_montage_information(eeg, get_pos, *, montage_units):
         )
 
     lpa, rpa, nasion = None, None, None
-    if hasattr(eeg, "chaninfo") and isinstance(eeg.chaninfo["nodatchans"], dict):
+    if hasattr(eeg, "chaninfo") and isinstance(eeg.chaninfo.get("nodatchans"), dict):
         nodatchans = eeg.chaninfo["nodatchans"]
         types = nodatchans.get("type", [])
         descriptions = nodatchans.get("description", [])

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix bug when loading certain EEGLAB files that do not contain a ``nodatchans`` field, by `Clemens Brunner`_.
Original file line number	Diff line number	Diff line change
`@@ -162,7 +162,7 @@ def _get_montage_information(eeg, get_pos, *, montage_units):`
`162`	`162`	`)`
`163`	`163`
`164`	`164`	`lpa, rpa, nasion = None, None, None`
`165`		`- if hasattr(eeg, "chaninfo") and isinstance(eeg.chaninfo["nodatchans"], dict):`
	`165`	`+ if hasattr(eeg, "chaninfo") and isinstance(eeg.chaninfo.get("nodatchans"), dict):`
`166`	`166`	`nodatchans = eeg.chaninfo["nodatchans"]`
`167`	`167`	`types = nodatchans.get("type", [])`
`168`	`168`	`descriptions = nodatchans.get("description", [])`