FIX: Dont reuse by default

Author: larsoner

surfer/tests/test_viz.py

@@ -90,6 +90,19 @@ def test_image(tmpdir):
     brain.close()
 
 
+@requires_fsaverage()
+def test_brain_separate():
+    """Test that Brain does not reuse existing figures by default."""
+    _set_backend('auto')
+    brain = Brain(*std_args)
+    assert brain.brain_matrix.size == 1
+    brain_2 = Brain(*std_args)
+    assert brain_2.brain_matrix.size == 1
+    assert brain._figures[0][0] is not brain_2._figures[0][0]
+    brain_3 = Brain(*std_args, figure=brain._figures[0][0])
+    assert brain._figures[0][0] is brain_3._figures[0][0]
+
+
 @requires_fsaverage()
 def test_brains():
     """Test plotting of Brain with different arguments."""

surfer/viz.py

@@ -217,8 +217,8 @@ def _make_viewer(figure, n_row, n_col, title, scene_size, offscreen,
             # Triage: don't make TraitsUI if we don't have to
             if n_row == 1 and n_col == 1:
                 with warnings.catch_warnings(record=True):  # traits
-                    figure = mlab.figure(title, size=(w, h))
-                mlab.clf(figure)
+                    figure = mlab.figure(size=(w, h))
+                figure.name = title  # should set the figure title
                 figures = [[figure]]
                 _v = None
             else: