Revision: 6062
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6062&view=rev
Author: mdboom
Date: 2008-09-03 19:58:01 +0000 (Wed, 03 Sep 2008)
Log Message:
-----------
Add donut demo (to demonstrate compound paths)
Modified Paths:
--------------
trunk/matplotlib/examples/tests/backend_driver.py
Added Paths:
-----------
trunk/matplotlib/examples/api/donut_demo.py
Added: trunk/matplotlib/examples/api/donut_demo.py
===================================================================
--- trunk/matplotlib/examples/api/donut_demo.py (rev 0)
+++ trunk/matplotlib/examples/api/donut_demo.py 2008-09-03 19:58:01 UTC (rev
6062)
@@ -0,0 +1,54 @@
+import numpy as np
+import matplotlib.path as mpath
+import matplotlib.patches as mpatches
+import matplotlib.pyplot as plt
+
+def wise(v):
+ if v == 1:
+ return "CCW"
+ else:
+ return "CW"
+
+def make_circle(r):
+ t = np.arange(0, np.pi * 2.0, 0.01)
+ t = t.reshape((len(t), 1))
+ x = r * np.cos(t)
+ y = r * np.sin(t)
+ return np.hstack((x, y))
+
+Path = mpath.Path
+
+fig = plt.figure()
+ax = fig.add_subplot(111)
+
+inside_vertices = make_circle(0.5)
+outside_vertices = make_circle(1.0)
+codes = np.ones(len(inside_vertices), dtype=mpath.Path.code_type) *
mpath.Path.LINETO
+codes[0] = mpath.Path.MOVETO
+
+for i, (inside, outside) in enumerate(((1, 1), (1, -1), (-1, 1), (-1, -1))):
+ # Concatenate the inside and outside subpaths together, changing their
+ # order as needed
+ vertices = np.concatenate((outside_vertices[::outside],
+ inside_vertices[::inside]))
+ # Shift the path
+ vertices[:, 0] += i * 2.5
+ # The codes will be all "LINETO" commands, except for "MOVETO"s at the
+ # beginning of each subpath
+ all_codes = np.concatenate((codes, codes))
+ # Create the Path object
+ path = mpath.Path(vertices, all_codes)
+ # Add plot it
+ patch = mpatches.PathPatch(path, facecolor='#885500', edgecolor='black')
+ ax.add_patch(patch)
+
+ ax.annotate("Outside %s,\nInside %s" % (wise(outside), wise(inside)),
+ (i * 2.5, -1.5), va="top", ha="center")
+
+ax.set_xlim(-2,10)
+ax.set_ylim(-3,2)
+ax.set_title('Mmm, donuts!')
+ax.set_aspect(1.0)
+plt.show()
+
+
Modified: trunk/matplotlib/examples/tests/backend_driver.py
===================================================================
--- trunk/matplotlib/examples/tests/backend_driver.py 2008-09-03 19:15:22 UTC
(rev 6061)
+++ trunk/matplotlib/examples/tests/backend_driver.py 2008-09-03 19:58:01 UTC
(rev 6062)
@@ -126,6 +126,8 @@
api_files = [
'colorbar_only.py',
'color_cycle.py',
+ 'donut_demo.py',
+ 'path_patch_demo.py'
]
units_dir = os.path.join('..', 'units')
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