matplotlib · ksunden · Aug 21, 2023 · Aug 21, 2023
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -4095,7 +4095,7 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
 
         capwidths : float or array-like, default: None
           Either a scalar or a vector and sets the width of each cap.
-          The default is ``0.5*(with of the box)``, see *widths*.
+          The default is ``0.5*(width of the box)``, see *widths*.
 
         vert : bool, default: True
           If `True` (default), makes the boxes vertical.
@@ -4147,6 +4147,17 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
         --------
         .. plot:: gallery/statistics/bxp.py
         """
+        # Clamp median line to edge of box by default.
+        medianprops = {
+            "solid_capstyle": "butt",
+            "dash_capstyle": "butt",
+            **(medianprops or {}),
+        }
+        meanprops = {
+            "solid_capstyle": "butt",
+            "dash_capstyle": "butt",
+            **(meanprops or {}),
+        }
 
         # lists of artists to be output
         whiskers = []

diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot.pdf b/lib/matplotlib/tests/baseline_images/test_axes/boxplot.pdf
diff --git a/...matplotlib/tests/baseline_images/test_axes/boxplot_autorange_false_whiskers.png b/...matplotlib/tests/baseline_images/test_axes/boxplot_autorange_false_whiskers.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_autorange_true_whiskers.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_autorange_true_whiskers.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_custom_capwidths.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_custom_capwidths.png
diff --git a/...tplotlib/tests/baseline_images/test_axes/boxplot_mod_artists_after_plotting.png b/...tplotlib/tests/baseline_images/test_axes/boxplot_mod_artists_after_plotting.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_no_inverted_whisker.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_no_inverted_whisker.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_rc_parameters.pdf b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_rc_parameters.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_rc_parameters.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_rc_parameters.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_sym.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_sym.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_sym2.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_sym2.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/boxplot_with_CIarray.png b/lib/matplotlib/tests/baseline_images/test_axes/boxplot_with_CIarray.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_baseline.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_baseline.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_custom_capwidth.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_custom_capwidth.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_custom_capwidths.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_custom_capwidths.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_custombox.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_custombox.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_customcap.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_customcap.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_customoutlier.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_customoutlier.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_custompatchartist.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_custompatchartist.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_custompositions.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_custompositions.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_customwhisker.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_customwhisker.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_customwidths.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_customwidths.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_horizontal.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_horizontal.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_no_flier_stats.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_no_flier_stats.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_nobox.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_nobox.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_nocaps.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_nocaps.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_patchartist.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_patchartist.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_percentilewhis.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_percentilewhis.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_rangewhis.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_rangewhis.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_scalarwidth.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_scalarwidth.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_with_xlabels.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_with_xlabels.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_with_ylabels.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_with_ylabels.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_custompoint.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_custompoint.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_line.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_line.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_point.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_withmean_point.png
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/bxp_withnotch.png b/lib/matplotlib/tests/baseline_images/test_axes/bxp_withnotch.png
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -3223,6 +3223,15 @@ def test_bxp_customwhisker():
         whiskerprops=dict(linestyle='-', color='m', lw=3)))
 
 
+@check_figures_equal()
+def test_boxplot_median_bound_by_box(fig_test, fig_ref):
+    data = np.arange(3)
+    medianprops_test = {"linewidth": 12}
+    medianprops_ref = {**medianprops_test, "solid_capstyle": "butt"}
+    fig_test.subplots().boxplot(data,  medianprops=medianprops_test)
+    fig_ref.subplots().boxplot(data, medianprops=medianprops_ref)
+
+
 @image_comparison(['bxp_withnotch.png'],
                   remove_text=True,
                   savefig_kwarg={'dpi': 40},