FIX : fix explained var type on read for proj (mne-tools#10331)

jevenzh · Feb 13, 2022 · 20078a1 · 20078a1
1 parent 8babd8c
commit 20078a1
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/mne/io/proj.py b/mne/io/proj.py
@@ -435,7 +435,7 @@ def _read_proj(fid, node, *, ch_names_mapping=None, verbose=None):
 
         tag = find_tag(fid, item, FIFF.FIFF_MNE_ICA_PCA_EXPLAINED_VAR)
         if tag is not None:
-            explained_var = tag.data
+            explained_var = float(tag.data)
         else:
             explained_var = None
 

diff --git a/mne/tests/test_proj.py b/mne/tests/test_proj.py
@@ -182,6 +182,7 @@ def test_compute_proj_epochs(tmp_path):
             corr = np.corrcoef(p1_data, p2_data)[0, 1]
             assert_array_almost_equal(corr, 1.0, 5)
             if p2['explained_var']:
+                assert isinstance(p2['explained_var'], float)
                 assert_array_almost_equal(p1['explained_var'],
                                           p2['explained_var'])