SF.net SVN: matplotlib: [4636] trunk/matplotlib/lib/matplotlib/text.py

[<jr...@us...>]

Revision: 4636
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4636&view=rev
Author:   jrevans
Date:     2007-12-05 16:04:49 -0800 (Wed, 05 Dec 2007)

Log Message:
-----------
Added a 'data offset' coordinate to the Annotation class.

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/text.py

Modified: trunk/matplotlib/lib/matplotlib/text.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/text.py	2007-12-05 23:01:05 UTC (rev 4635)
+++ trunk/matplotlib/lib/matplotlib/text.py	2007-12-06 00:04:49 UTC (rev 4636)
@@ -1080,6 +1080,24 @@
             x = float(self.convert_xunits(x))
             y = float(self.convert_yunits(y))
             return trans.xy_tup((x,y))
+        elif s=='data offset':
+            # convert the data point
+            dx, dy = self.xy
+            trans = self.axes.transData
+            dx = float(self.convert_xunits(dx))
+            dy = float(self.convert_yunits(dy))
+            dx, dy = trans.xy_tup((dx, dy))
+
+            # convert the offset
+            dpi = self.figure.dpi.get()
+            x *= dpi/72.
+            y *= dpi/72.
+
+            # add the offset to the data point
+            x += dx
+            y += dy
+
+            return x, y
         elif s=='polar':
             theta, r = x, y
             x = r*npy.cos(theta)


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