Document "." as a filled marker.

... which it really is.

Also remove a bunch of unnecessary plt.show() from the marker reference
example, to make it more convenient to run from the command line.

Author: anntzer

examples/lines_bars_and_markers/marker_reference.py

@@ -60,9 +60,6 @@ def split_list(a_list):
         ax.plot([y] * 3, marker=marker, **marker_style)
     format_axes(ax)
 
-plt.show()
-
-
 ###############################################################################
 # Filled markers
 # ==============
@@ -75,8 +72,6 @@ def split_list(a_list):
         ax.plot([y] * 3, marker=marker, **marker_style)
     format_axes(ax)
 
-plt.show()
-
 ###############################################################################
 # .. _marker_fill_styles:
 #
@@ -102,9 +97,6 @@ def split_list(a_list):
     ax.plot([y] * 3, fillstyle=fill_style, **filled_marker_style)
 format_axes(ax)
 
-plt.show()
-
-
 ###############################################################################
 # Markers created from TeX symbols
 # ================================
@@ -128,9 +120,6 @@ def split_list(a_list):
     ax.plot([y] * 3, marker=marker, **marker_style)
 format_axes(ax)
 
-plt.show()
-
-
 ###############################################################################
 # Markers created from Paths
 # ==========================
@@ -160,8 +149,6 @@ def split_list(a_list):
     ax.plot([y] * 3, marker=marker, **marker_style)
 format_axes(ax)
 
-plt.show()
-
 ###############################################################################
 # Advanced marker modifications with transform
 # ============================================
@@ -197,7 +184,6 @@ def split_list(a_list):
 format_axes(ax)
 
 fig.tight_layout()
-plt.show()
 
 ###############################################################################
 # Setting marker cap style and join style
@@ -235,7 +221,6 @@ def split_list(a_list):
         ax.plot(x, y, marker=m, **marker_outer)
         ax.text(x, len(CapStyle) - .5, f'{theta}°', ha='center')
 format_axes(ax)
-plt.show()
 
 ###############################################################################
 # Modifying the join style:

lib/matplotlib/markers.py

@@ -217,7 +217,7 @@ class MarkerStyle:
     # Just used for informational purposes.  is_filled()
     # is calculated in the _set_* functions.
     filled_markers = (
-        'o', 'v', '^', '<', '>', '8', 's', 'p', '*', 'h', 'H', 'D', 'd',
+        '.', 'o', 'v', '^', '<', '>', '8', 's', 'p', '*', 'h', 'H', 'D', 'd',
         'P', 'X')
 
     fillstyles = ('full', 'left', 'right', 'bottom', 'top', 'none')

lib/matplotlib/tests/test_lines.py

@@ -195,7 +195,11 @@ def test_marker_fill_styles():
     x = np.array([0, 9])
     fig, ax = plt.subplots()
 
-    for j, marker in enumerate(mlines.Line2D.filled_markers):
+    # This hard-coded list of markers correspond to an earlier iteration of
+    # MarkerStyle.filled_markers; the value of that attribute has changed but
+    # we kept the old value here to not regenerate the baseline image.
+    # Replace with mlines.Line2D.filled_markers when the image is regenerated.
+    for j, marker in enumerate("ov^<>8sp*hHDdPX"):
         for i, fs in enumerate(mlines.Line2D.fillStyles):
             color = next(colors)
             ax.plot(j * 10 + x, y + i + .5 * (j % 2),