FIX: Autoposition title when yaxis has offset

StefRe · StefRe · commit 862b4a116e62 · 2021-12-29T12:50:40.000+01:00
Move the title above the offset text if present.
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -2990,6 +2990,10 @@ def _update_title_position(self, renderer):
                 if bb is None:
                     bb = ax.get_window_extent(renderer)
                 top = max(top, bb.ymax)
+                # take yaxis offset text into account
+                bb = ax.yaxis.get_tightbbox(renderer)
+                if ax.yaxis.offsetText.get_text() and bb.ymax > top:
+                    top = bb.ymax
             if top < 0:
                 # the top of Axes is not even on the figure, so don't try and
                 # automatically place it.
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -6121,6 +6121,16 @@ def test_title_xticks_top_both():
     assert ax.title.get_position()[1] > 1.04
 
 
+def test_title_above_offset():
+    # Test that title moves if yaxis has offset text.
+    mpl.rcParams['axes.titley'] = None
+    fig, ax = plt.subplots()
+    ax.set_ylim(1e11)
+    ax.set_title('Title')
+    fig.draw_without_rendering()
+    assert ax.title.get_position()[1] > 1.0
+
+
 def test_title_no_move_off_page():
     # If an axes is off the figure (ie. if it is cropped during a save)
     # make sure that the automatic title repositioning does not get done.
