make autodateformatter customizable

jdh2358 · jdh2358 · commit 1e84e973a25b · 2009-08-20T23:16:11.000Z
svn path=/trunk/matplotlib/; revision=7513
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -432,12 +432,9 @@ def __init__(self, locator, tz=None, defaultfmt='%Y-%m-%d'):
     def __call__(self, x, pos=0):
         scale = float( self._locator._get_unit() )
 
-        keys = self.scaled.keys()
-        keys.sort()
-
         fmt = self.defaultfmt
 
-        for k in keys:
+        for k in sorted(self.scaled):
            if k>=scale:
               fmt = self.scaled[k]
               break
