added polar bar char demo

jdh2358 · jdh2358 · commit 491f6cd821dc · 2007-04-23T21:15:37.000Z
svn path=/trunk/matplotlib/; revision=3254
diff --git a/examples/polar_bar.py b/examples/polar_bar.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+
+import matplotlib.numerix as nx
+from matplotlib.mlab import linspace
+import matplotlib.cm as cm
+from pylab import figure, show, rc
+
+
+# force square figure and square axes looks better for polar, IMO
+fig = figure(figsize=(8,8))
+ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True)
+
+N = 20
+theta = nx.arange(0.0, 2*nx.pi, 2*nx.pi/N)
+radii = 10*nx.mlab.rand(N)
+width = nx.pi/4*nx.mlab.rand(N)
+bars = ax.bar(theta, radii, width=width)
+for r,bar in zip(radii, bars):
+    bar.set_facecolor( cm.jet(r/10.))
+    bar.set_alpha(0.5)
+show()
diff --git a/examples/polar_legend.py b/examples/polar_legend.py
@@ -1,43 +1,4 @@
 #!/usr/bin/env python
-#
-# matplotlib now has a PolarAxes class and a polar function in the
-# matplotlib interface.  This is considered alpha and the interface
-# may change as we work out how polar axes should best be integrated
-#
-# The only function that has been tested on polar axes is "plot" (the
-# pylab interface function "polar" calls ax.plot where ax is a
-# PolarAxes) -- other axes plotting functions may work on PolarAxes
-# but haven't been tested and may need tweaking.
-#
-# you can get get a PolarSubplot instance by doing, for example
-#
-#   subplot(211, polar=True)
-#
-# or a PolarAxes instance by doing
-#   axes([left, bottom, width, height], polar=True)
-#
-# The view limits (eg xlim and ylim) apply to the lower left and upper
-# right of the rectangular box that surrounds to polar axes.  Eg if
-# you have
-#
-#  r = arange(0,1,0.01)
-#  theta = 2*pi*r
-#
-# the lower left corner is 5/4pi, sqrt(2) and the
-# upper right corner is 1/4pi, sqrt(2)
-#
-# you could change the radial bounding box (zoom out) by setting the
-# ylim (radial coordinate is the second argument to the plot command,
-# as in matlab(TM), though this is not advised currently because it is not
-# clear to me how the axes should behave in the change of view limits.
-# Please advise me if you have opinions.  Likewise, the pan/zoom
-# controls probably do not do what you think they do and are better
-# left alone on polar axes.  Perhaps I will disable them for polar
-# axes unless we come up with a meaningful, useful and functional
-# implementation for them.
-#
-# See the pylab rgrids and thetagrids functions for
-# information on how to customize the grid locations and labels
 
 import matplotlib.numerix as nx
 from pylab import figure, show, rc
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
@@ -5280,7 +5280,8 @@ def cla(self):
         self.artists = []
         self.collections = []
         self.texts = []     # text in axis coords
-
+        self.legend_ = None
+        
         self.grid(self._gridOn)
         self.title =  Text(
             x=0.5, y=1.05, text='',
@@ -5556,8 +5557,8 @@ def draw(self, renderer):
                 l.set_clip_path(clippath)
                 l.draw(renderer)            
 
-        for line in self.lines:
-            line.set_clip_path(clippath)
+        for a in self.lines:
+            a.set_clip_path(clippath)
 
         artists = []
         artists.extend(self.lines)
