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11 changes: 11 additions & 0 deletions doc/users/whats_new/boxplot_zorder_kwarg.rst
Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
Boxplot Zorder Keyword Argument
-------------------------------

The ``zorder`` parameter now exists for :func:`boxplot`. This allows the zorder
of a boxplot to be set in the plotting function call.

Example
```````
::

boxplot(np.arange(10), zorder=10)
21 changes: 15 additions & 6 deletions lib/matplotlib/axes/_axes.py
Original file line number Diff line number Diff line change
Expand Up @@ -3095,7 +3095,7 @@ def boxplot(self, x, notch=None, sym=None, vert=None, whis=None,
showbox=None, showfliers=None, boxprops=None,
labels=None, flierprops=None, medianprops=None,
meanprops=None, capprops=None, whiskerprops=None,
manage_xticks=True, autorange=False):
manage_xticks=True, autorange=False, zorder=None):
"""
Make a box and whisker plot.

Expand All @@ -3108,7 +3108,7 @@ def boxplot(self, x, notch=None, sym=None, vert=None, whis=None,
showbox=True, showfliers=True, boxprops=None,
labels=None, flierprops=None, medianprops=None,
meanprops=None, capprops=None, whiskerprops=None,
manage_xticks=True, autorange=False):
manage_xticks=True, autorange=False, zorder=None):

Make a box and whisker plot for each column of ``x`` or each
vector in sequence ``x``. The box extends from the lower to
Expand Down Expand Up @@ -3220,6 +3220,9 @@ def boxplot(self, x, notch=None, sym=None, vert=None, whis=None,
``shownotches`` is also True. Otherwise, means will be shown
as points.

zorder : scalar, optional (None)
Sets the zorder of the boxplot.

Other Parameters
----------------
The following boolean options toggle the drawing of individual
Expand Down Expand Up @@ -3390,15 +3393,15 @@ def _update_dict(dictionary, rc_name, properties):
medianprops=medianprops, meanprops=meanprops,
meanline=meanline, showfliers=showfliers,
capprops=capprops, whiskerprops=whiskerprops,
manage_xticks=manage_xticks)
manage_xticks=manage_xticks, zorder=zorder)
return artists

def bxp(self, bxpstats, positions=None, widths=None, vert=True,
patch_artist=False, shownotches=False, showmeans=False,
showcaps=True, showbox=True, showfliers=True,
boxprops=None, whiskerprops=None, flierprops=None,
medianprops=None, capprops=None, meanprops=None,
meanline=False, manage_xticks=True):
meanline=False, manage_xticks=True, zorder=None):
"""
Drawing function for box and whisker plots.

Expand All @@ -3409,7 +3412,7 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
showcaps=True, showbox=True, showfliers=True,
boxprops=None, whiskerprops=None, flierprops=None,
medianprops=None, capprops=None, meanprops=None,
meanline=False, manage_xticks=True):
meanline=False, manage_xticks=True, zorder=None):

Make a box and whisker plot for each column of *x* or each
vector in sequence *x*. The box extends from the lower to
Expand Down Expand Up @@ -3513,6 +3516,9 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
manage_xticks : bool, default = True
If the function should adjust the xlim and xtick locations.

zorder : scalar, default = None
The zorder of the resulting boxplot

Returns
-------
result : dict
Expand Down Expand Up @@ -3555,7 +3561,10 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
# empty list of xticklabels
datalabels = []

zorder = mlines.Line2D.zorder
# Use default zorder if none specified
if zorder is None:
zorder = mlines.Line2D.zorder

zdelta = 0.1
# box properties
if patch_artist:
Expand Down
8 changes: 8 additions & 0 deletions lib/matplotlib/tests/test_axes.py
Original file line number Diff line number Diff line change
Expand Up @@ -2012,6 +2012,14 @@ def test_boxplot_bad_ci_1():
conf_intervals=[[1, 2]])


@cleanup
def test_boxplot_zorder():
x = np.arange(10)
fix, ax = plt.subplots()
assert ax.boxplot(x)['boxes'][0].get_zorder() == 2
assert ax.boxplot(x, zorder=10)['boxes'][0].get_zorder() == 10


@cleanup
def test_boxplot_bad_ci_2():
x = np.linspace(-7, 7, 140)
Expand Down