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Filled + and x markers
The rationale for the addition of these symbols is; to allow a grammar based plotting package to conveniently use the common plotting symbols (circle, square, triangle, plus and x) and not have to deal with some of them not being fillable.
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+98
-2
lines changed

5 files changed

+98
-2
lines changed

‎doc/users/whats_new/filled_plus_and_x_markers.rst

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,7 @@
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Filled ``+`` and ``x`` markers
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------------------------------
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New fillable *plus* and *x* markers have been added. See
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the :mod:`~matplotlib.markers` module and
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:ref:`marker reference <lines_bars_and_markers-marker_reference>`
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examples.

‎lib/matplotlib/markers.py

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Original file line numberDiff line numberDiff line change
@@ -31,6 +31,8 @@
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"d" thin_diamond
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"|" vline
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"_" hline
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"P" plus (filled)
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"X" x (filled)
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TICKLEFT tickleft
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TICKRIGHT tickright
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TICKUP tickup
@@ -126,6 +128,8 @@ class MarkerStyle(object):
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'd': 'thin_diamond',
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'|': 'vline',
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'_': 'hline',
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'P': 'plus_filled',
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'X': 'x_filled',
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TICKLEFT: 'tickleft',
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TICKRIGHT: 'tickright',
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TICKUP: 'tickup',
@@ -147,7 +151,8 @@ class MarkerStyle(object):
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# Just used for informational purposes. is_filled()
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# is calculated in the _set_* functions.
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filled_markers = (
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'o', 'v', '^', '<', '>', '8', 's', 'p', '*', 'h', 'H', 'D', 'd')
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'o', 'v', '^', '<', '>', '8', 's', 'p', '*', 'h', 'H', 'D', 'd',
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'P', 'X')
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fillstyles = ('full', 'left', 'right', 'bottom', 'top', 'none')
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_half_fillstyles = ('left', 'right', 'bottom', 'top')
@@ -828,3 +833,87 @@ def _set_x(self):
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self._snap_threshold = 3.0
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self._filled = False
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self._path = self._x_path
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_plus_filled_path = Path([(1/3, 0), (2/3, 0), (2/3, 1/3),
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(1, 1/3), (1, 2/3), (2/3, 2/3),
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(2/3, 1), (1/3, 1), (1/3, 2/3),
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(0, 2/3), (0, 1/3), (1/3, 1/3),
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(1/3, 0)],
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[Path.MOVETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.CLOSEPOLY])
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_plus_filled_path_t = Path([(1, 1/2), (1, 2/3), (2/3, 2/3),
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(2/3, 1), (1/3, 1), (1/3, 2/3),
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(0, 2/3), (0, 1/2), (1, 1/2)],
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[Path.MOVETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO,
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Path.CLOSEPOLY])
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def _set_plus_filled(self):
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self._transform = Affine2D().translate(-0.5, -0.5)
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self._snap_threshold = 5.0
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self._joinstyle = 'miter'
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fs = self.get_fillstyle()
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if not self._half_fill():
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self._path = self._plus_filled_path
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else:
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# Rotate top half path to support all partitions
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if fs == 'top':
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rotate, rotate_alt = 0, 180
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elif fs == 'bottom':
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rotate, rotate_alt = 180, 0
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elif fs == 'left':
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rotate, rotate_alt = 90, 270
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else:
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rotate, rotate_alt = 270, 90
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self._path = self._plus_filled_path_t
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self._alt_path = self._plus_filled_path_t
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self._alt_transform = Affine2D().translate(-0.5, -0.5)
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self._transform.rotate_deg(rotate)
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self._alt_transform.rotate_deg(rotate_alt)
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_x_filled_path = Path([(0.25, 0), (0.5, 0.25), (0.75, 0), (1, 0.25),
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(0.75, 0.5), (1, 0.75), (0.75, 1), (0.5, 0.75),
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(0.25, 1), (0, 0.75), (0.25, 0.5), (0, 0.25),
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(0.25, 0)],
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[Path.MOVETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.CLOSEPOLY])
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_x_filled_path_t = Path([(0.75, 0.5), (1, 0.75), (0.75, 1),
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(0.5, 0.75), (0.25, 1), (0, 0.75),
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(0.25, 0.5), (0.75, 0.5)],
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[Path.MOVETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.CLOSEPOLY])
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def _set_x_filled(self):
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self._transform = Affine2D().translate(-0.5, -0.5)
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self._snap_threshold = 5.0
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self._joinstyle = 'miter'
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fs = self.get_fillstyle()
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if not self._half_fill():
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self._path = self._x_filled_path
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else:
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# Rotate top half path to support all partitions
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if fs == 'top':
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rotate, rotate_alt = 0, 180
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elif fs == 'bottom':
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rotate, rotate_alt = 180, 0
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elif fs == 'left':
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rotate, rotate_alt = 90, 270
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else:
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rotate, rotate_alt = 270, 90
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self._path = self._x_filled_path_t
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self._alt_path = self._x_filled_path_t
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self._alt_transform = Affine2D().translate(-0.5, -0.5)
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self._transform.rotate_deg(rotate)
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self._alt_transform.rotate_deg(rotate_alt)

‎lib/matplotlib/tests/baseline_images/test_axes/marker_styles.png

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‎lib/matplotlib/tests/baseline_images/test_lines/marker_fill_styles.png

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‎lib/matplotlib/tests/test_lines.py

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Original file line numberDiff line numberDiff line change
@@ -180,7 +180,7 @@ def test_marker_fill_styles():
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markeredgewidth=2)
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ax.set_ylim([0, 7.5])
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ax.set_xlim([-5, 135])
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ax.set_xlim([-5, 155])
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@image_comparison(baseline_images=['scaled_lines'], style='default')

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