diff --git a/examples/pylab_examples/legend_auto.py b/examples/pylab_examples/legend_auto.py
index a29a746d13ae..bcab13df3375 100644
--- a/examples/pylab_examples/legend_auto.py
+++ b/examples/pylab_examples/legend_auto.py
@@ -18,7 +18,7 @@ def fig_1():
figure(1)
t = arange(0, 40.0 * pi, 0.1)
l, = plot(t, 100*sin(t), 'r', label='sine')
- legend()
+ legend(framealpha=0.5)
def fig_2():
figure(2)
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
index 11b50caf79b9..9be4a2e2be2c 100644
--- a/lib/matplotlib/axes.py
+++ b/lib/matplotlib/axes.py
@@ -4448,6 +4448,9 @@ def legend(self, *args, **kwargs):
If *True*, draw a shadow behind legend. If *None*,
use rc settings.
+ *framealpha*: [*None* | float]
+ If not None, alpha channel for legend frame. Default *None*.
+
*ncol* : integer
number of columns. default is 1
diff --git a/lib/matplotlib/legend.py b/lib/matplotlib/legend.py
index e2fa2957e1b2..07b7f5cd6f1c 100644
--- a/lib/matplotlib/legend.py
+++ b/lib/matplotlib/legend.py
@@ -167,6 +167,9 @@ def __init__(self, parent, handles, labels,
# box, none use rc
shadow=None,
title=None, # set a title for the legend
+
+ framealpha=None, # set frame alpha
+
bbox_to_anchor=None, # bbox that the legend will be anchored.
bbox_transform=None, # transform for the bbox
frameon=None, # draw frame
@@ -195,6 +198,7 @@ def __init__(self, parent, handles, labels,
fancybox if True, draw a frame with a round fancybox.
If None, use rc
shadow if True, draw a shadow behind legend
+ framealpha If not None, alpha channel for the frame.
ncol number of columns
borderpad the fractional whitespace inside the legend border
labelspacing the vertical space between the legend entries
@@ -384,6 +388,9 @@ def __init__(self, parent, handles, labels,
# init with null renderer
self._init_legend_box(handles, labels)
+ if framealpha is not None:
+ self.get_frame().set_alpha(framealpha)
+
self._loc = loc
self.set_title(title)
diff --git a/lib/matplotlib/tests/baseline_images/test_legend/framealpha.pdf b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.pdf
new file mode 100644
index 000000000000..397fee82c1ce
Binary files /dev/null and b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.pdf differ
diff --git a/lib/matplotlib/tests/baseline_images/test_legend/framealpha.png b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.png
new file mode 100644
index 000000000000..1fbe5c674aff
Binary files /dev/null and b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_legend/framealpha.svg b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.svg
new file mode 100644
index 000000000000..4a2bc519b45e
--- /dev/null
+++ b/lib/matplotlib/tests/baseline_images/test_legend/framealpha.svg
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diff --git a/lib/matplotlib/tests/test_legend.py b/lib/matplotlib/tests/test_legend.py
index 06735c5c6928..d9448791d029 100644
--- a/lib/matplotlib/tests/test_legend.py
+++ b/lib/matplotlib/tests/test_legend.py
@@ -47,6 +47,12 @@ def test_fancy():
plt.legend(loc="center left", bbox_to_anchor=[1.0, 0.5],
ncol=2, shadow=True, title="My legend", numpoints=1)
+@image_comparison(baseline_images=['framealpha'], remove_text=True)
+def test_framealpha():
+ x = np.linspace(1, 100, 100)
+ y = x
+ plt.plot(x, y, label='mylabel', lw=10)
+ plt.legend(framealpha=0.5)
@image_comparison(baseline_images=['scatter_rc3','scatter_rc1'], remove_text=True)
def test_rc():
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