diff --git a/doc/users/next_whats_new/rcparam-axes-aspect.rst b/doc/users/next_whats_new/rcparam-axes-aspect.rst
new file mode 100644
index 000000000000..11700385c774
--- /dev/null
+++ b/doc/users/next_whats_new/rcparam-axes-aspect.rst
@@ -0,0 +1,9 @@
+rcParams for default axes aspect
+--------------------------------------------------
+
+One new rcParams have been added: ``axes.aspect`` for the default axes.aspect specification
+
+Valid values for ``axes.aspect`` remain: 'auto', 'equal' or a float.
+
+Default behviour is unchanged.
+
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
index 2e519a74c18e..7bb382a98927 100644
--- a/lib/matplotlib/axes/_base.py
+++ b/lib/matplotlib/axes/_base.py
@@ -424,7 +424,7 @@ def __init__(self, fig, rect,
raise ValueError('Width and height specified must be non-negative')
self._originalPosition = self._position.frozen()
self.axes = self
- self._aspect = 'auto'
+ self._aspect = rcParams['axes.aspect']
self._adjustable = 'box'
self._anchor = 'C'
self._stale_viewlim_x = False
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
index 26d54f61d0c1..d1dae18b7d12 100644
--- a/lib/matplotlib/rcsetup.py
+++ b/lib/matplotlib/rcsetup.py
@@ -369,12 +369,15 @@ def validate_color(s):
def validate_aspect(s):
- if s in ('auto', 'equal'):
+ aspect_specifications = ['auto', 'equal']
+ if s in aspect_specifications:
return s
try:
return float(s)
except ValueError:
- raise ValueError('not a valid aspect specification')
+ raise ValueError(
+ "%s is not a valid aspect specification. Valid aspect "
+ "specifications are %s." % (s, ", ".join(aspect_specifications)))
def validate_fontsize_None(s):
@@ -1175,6 +1178,7 @@ def _validate_linestyle(ls):
'axes.autolimit_mode': [
'data',
ValidateInStrings('autolimit_mode', ['data', 'round_numbers'])],
+ 'axes.aspect': ['auto', validate_aspect],
'axes.xmargin': [0.05, ValidateInterval(0, 1,
closedmin=True,
closedmax=True)], # margin added to xaxis
diff --git a/matplotlibrc.template b/matplotlibrc.template
index 67761328dbdc..b3766c7026d9 100644
--- a/matplotlibrc.template
+++ b/matplotlibrc.template
@@ -407,6 +407,7 @@
#axes.autolimit_mode : data ## How to scale axes limits to the data. By using:
## - "data" to use data limits, plus some margin
## - "round_numbers" move to the nearest "round" number
+#axes.aspect : 'auto' ## axes aspect, options: 'auto', 'equal' or float
#axes.xmargin : .05 ## x margin. See `axes.Axes.margins`
#axes.ymargin : .05 ## y margin. See `axes.Axes.margins`
#polaraxes.grid : True ## display grid on polar axes
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