diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
index d4d3578b6e51..3c0bb916bb7f 100644
--- a/lib/matplotlib/axes/_base.py
+++ b/lib/matplotlib/axes/_base.py
@@ -90,12 +90,24 @@ def _process_plot_format(fmt):
# handle the multi char special cases and strip them from the
# string
- if fmt.find('--') >= 0:
+ if fmt.find('--@loose') >= 0:
+ linestyle = '--@loose'
+ fmt = fmt.replace('--@loose', '')
+ elif fmt.find('--') >= 0:
linestyle = '--'
fmt = fmt.replace('--', '')
- if fmt.find('-.') >= 0:
+
+ if fmt.find('-.@loose') >= 0:
+ linestyle = '-.@loose'
+ fmt = fmt.replace('-.@loose', '')
+ elif fmt.find('-.') >= 0:
linestyle = '-.'
fmt = fmt.replace('-.', '')
+
+ if fmt.find(':@loose') >= 0:
+ linestyle = ':@loose'
+ fmt = fmt.replace(':@loose', '')
+
if fmt.find(' ') >= 0:
linestyle = 'None'
fmt = fmt.replace(' ', '')
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
index 08e7f098d583..3731907a46dc 100644
--- a/lib/matplotlib/cbook/__init__.py
+++ b/lib/matplotlib/cbook/__init__.py
@@ -1896,7 +1896,9 @@ def unmasked_index_ranges(mask, compressed=True):
# The ls_mapper maps short codes for line style to their full name used by
# backends; the reverse mapper is for mapping full names to short ones.
-ls_mapper = {'-': 'solid', '--': 'dashed', '-.': 'dashdot', ':': 'dotted'}
+ls_mapper = {'-': 'solid', '--': 'dashed', '-.': 'dashdot', ':': 'dotted',
+ '--@loose': 'dashed@loose', '-.@loose': 'dashdot@loose',
+ ':@loose': 'dotted@loose'}
ls_mapper_r = {v: k for k, v in six.iteritems(ls_mapper)}
diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
index 8ac61ee15963..c3b18e7d90ac 100644
--- a/lib/matplotlib/lines.py
+++ b/lib/matplotlib/lines.py
@@ -43,7 +43,8 @@ def _get_dash_pattern(style):
if style in ['solid', 'None']:
offset, dashes = None, None
# dashed styles
- elif style in ['dashed', 'dashdot', 'dotted']:
+ elif style in ['dashed', 'dashdot', 'dotted', 'dashed@loose',
+ 'dashdot@loose', 'dotted@loose']:
offset = 0
dashes = tuple(rcParams['lines.{}_pattern'.format(style)])
#
@@ -239,13 +240,16 @@ class Line2D(Artist):
"""
lineStyles = _lineStyles = { # hidden names deprecated
- '-': '_draw_solid',
- '--': '_draw_dashed',
- '-.': '_draw_dash_dot',
- ':': '_draw_dotted',
- 'None': '_draw_nothing',
- ' ': '_draw_nothing',
- '': '_draw_nothing',
+ '-': '_draw_solid',
+ '--': '_draw_dashed',
+ '-.': '_draw_dash_dot',
+ ':': '_draw_dotted',
+ 'None': '_draw_nothing',
+ ' ': '_draw_nothing',
+ '': '_draw_nothing',
+ '--@loose': '_draw_dashed_loose',
+ '-.@loose': '_draw_dash_dot_loose',
+ ':@loose': '_draw_dotted_loose',
}
_drawStyles_l = {
@@ -1262,6 +1266,21 @@ def _draw_dotted(self, renderer, gc, path, trans):
gc.set_dashes(self._dashOffset, self._dashSeq)
renderer.draw_path(gc, path, trans)
+ def _draw_dashed_loose(self, renderer, gc, path, trans):
+ gc.set_linestyle('dashed@loose')
+ gc.set_dashes(self._dashOffset, self._dashSeq)
+ renderer.draw_path(gc, path, trans)
+
+ def _draw_dash_dot_loose(self, renderer, gc, path, trans):
+ gc.set_linestyle('dashdot@loose')
+ gc.set_dashes(self._dashOffset, self._dashSeq)
+ renderer.draw_path(gc, path, trans)
+
+ def _draw_dotted_loose(self, renderer, gc, path, trans):
+ gc.set_linestyle('dotted@loose')
+ gc.set_dashes(self._dashOffset, self._dashSeq)
+ renderer.draw_path(gc, path, trans)
+
def update_from(self, other):
"""copy properties from other to self"""
Artist.update_from(self, other)
@@ -1452,7 +1471,8 @@ def get_solid_capstyle(self):
def is_dashed(self):
'return True if line is dashstyle'
- return self._linestyle in ('--', '-.', ':')
+ return self._linestyle in ('--', '-.', ':', '--@loose', '-.@loose',
+ ':@loose')
class VertexSelector(object):
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
index a5a248c156bd..f7406d00542b 100644
--- a/lib/matplotlib/rcsetup.py
+++ b/lib/matplotlib/rcsetup.py
@@ -925,6 +925,10 @@ def validate_animation_writer_path(p):
'lines.dashed_pattern': [[2.8, 1.2], validate_nseq_float()],
'lines.dashdot_pattern': [[4.8, 1.2, 0.8, 1.2], validate_nseq_float()],
'lines.dotted_pattern': [[1.1, 1.1], validate_nseq_float()],
+ 'lines.dashed@loose_pattern': [[2.8, 3.6], validate_nseq_float()],
+ 'lines.dashdot@loose_pattern': [[4.8, 3.6, 0.8, 3.6],
+ validate_nseq_float()],
+ 'lines.dotted@loose_pattern': [[1.1, 3.3], validate_nseq_float()],
'lines.scale_dashes': [True, validate_bool],
# marker props
diff --git a/matplotlibrc.template b/matplotlibrc.template
index e57dfd9ada2d..ff6b71ce57c0 100644
--- a/matplotlibrc.template
+++ b/matplotlibrc.template
@@ -94,6 +94,9 @@ backend : $TEMPLATE_BACKEND
#lines.dashed_pattern : 2.8, 1.2
#lines.dashdot_pattern : 4.8, 1.2, 0.8, 1.2
#lines.dotted_pattern : 1.1, 1.1
+#lines.dashed@loose_pattern : 2.8, 3.6
+#lines.dashdot@loose_pattern : 4.8, 3.6, 0.8, 3.6
+#lines.dotted@loose_pattern : 1.1, 3.3
#lines.scale_dashes : True
#markers.fillstyle: full # full|left|right|bottom|top|none
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