matplotlib
diff --git a/‎CHANGELOG‎
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diff --git a/‎examples/pylab_examples/anchored_artists.py‎
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diff --git a/‎examples/pylab_examples/anchored_text.py‎
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@@ -1,3 +1,7 @@
+2009-03-20 Add AuxTransformBox in offsetbox.py to support some transformation. 
+           anchored_text.py example is enhanced and renamed 
+           (anchored_artists.py). - JJL
+
 2009-03-20 Add "bar" connection style for annotation - JJL
 
 2009-03-17 Fix bugs in edge color handling by contourf, found
 
@@ -0,0 +1,117 @@
+from matplotlib.patches import Rectangle, Ellipse
+
+from matplotlib.offsetbox import AnchoredOffsetbox, AuxTransformBox, VPacker,\
+     TextArea, DrawingArea
+
+
+class AnchoredText(AnchoredOffsetbox):
+    def __init__(self, s, loc, pad=0.4, borderpad=0.5, prop=None, frameon=True):
+
+        self.txt = TextArea(s,
+                            minimumdescent=False)
+
+
+        super(AnchoredText, self).__init__(loc, pad=pad, borderpad=borderpad,
+                                           child=self.txt,
+                                           prop=prop,
+                                           frameon=frameon)
+
+
+class AnchoredSizeBar(AnchoredOffsetbox):
+    def __init__(self, transform, size, label, loc,
+                 pad=0.1, borderpad=0.1, sep=2, prop=None, frameon=True):
+        """
+        Draw a horizontal bar with the size in data coordinate of the give axes.
+        A label will be drawn underneath (center-alinged).
+
+        pad, borderpad in fraction of the legend font size (or prop)
+        sep in points.
+        """
+        self.size_bar = AuxTransformBox(transform)
+        self.size_bar.add_artist(Rectangle((0,0), size, 0, fc="none"))
+
+        self.txt_label = TextArea(label, minimumdescent=False)
+
+        self._box = VPacker(children=[self.size_bar, self.txt_label],
+                            align="center",
+                            pad=0, sep=sep)
+
+        AnchoredOffsetbox.__init__(self, loc, pad=pad, borderpad=borderpad,
+                                   child=self._box,
+                                   prop=prop,
+                                   frameon=frameon)
+
+
+class AnchoredEllipse(AnchoredOffsetbox):
+    def __init__(self, transform, width, height, angle, loc,
+                 pad=0.1, borderpad=0.1, prop=None, frameon=True):
+        """
+        Draw an ellipse the size in data coordinate of the give axes.
+
+        pad, borderpad in fraction of the legend font size (or prop)
+        """
+        self._box = AuxTransformBox(transform)
+        self.ellipse = Ellipse((0,0), width, height, angle)
+        self._box.add_artist(self.ellipse)
+
+        AnchoredOffsetbox.__init__(self, loc, pad=pad, borderpad=borderpad,
+                                   child=self._box,
+                                   prop=prop,
+                                   frameon=frameon)
+
+
+
+class AnchoredDrawingArea(AnchoredOffsetbox):
+    def __init__(self, width, height, xdescent, ydescent,
+                 loc, pad=0.4, borderpad=0.5, prop=None, frameon=True):
+
+        self.da = DrawingArea(width, height, xdescent, ydescent, clip=True)
+
+        super(AnchoredDrawingArea, self).__init__(loc, pad=pad, borderpad=borderpad,
+                                                  child=self.da,
+                                                  prop=None,
+                                                  frameon=frameon)
+
+
+
+if __name__ == "__main__":
+
+    import matplotlib.pyplot as plt
+    
+    ax = plt.gca()
+    ax.set_aspect(1.)
+
+    at = AnchoredText("Figure 1a",
+                      loc=2, frameon=True)
+    at.patch.set_boxstyle("round,pad=0.,rounding_size=0.2")
+    ax.add_artist(at)
+
+    from matplotlib.patches import Circle
+    ada = AnchoredDrawingArea(20, 20, 0, 0,
+                              loc=1, pad=0., frameon=False)
+    p = Circle((10, 10), 10)
+    ada.da.add_artist(p)
+    ax.add_artist(ada)
+
+    # draw an ellipse of width=0.1, height=0.15 in the data coordinate
+    ae = AnchoredEllipse(ax.transData, width=0.1, height=0.15, angle=0.,
+                         loc=3, pad=0.5, borderpad=0.4, frameon=True)
+
+    ax.add_artist(ae)
+
+    # draw a horizontal bar with length of 0.1 in Data coordinate
+    # (ax.transData) with a label underneath.
+    as =  AnchoredSizeBar(ax.transData,
+                          0.1,
+                          r"1$^{\prime}$",
+                          loc=8,
+                          pad=0.1, borderpad=0.5, sep=5,
+                          frameon=False)
+    ax.add_artist(as)
+
+    plt.draw()
+    plt.show()
+
+
+
+