fixed grid toggle

svn path=/trunk/matplotlib/; revision=717

Author: jdh2358

lib/matplotlib/axes.py

@@ -1208,8 +1208,11 @@ def get_yticks(self):
         'Return the y ticks as a list of locations'
         return self.yaxis.get_ticklocs()  
 
-    def grid(self, b):
-        'Set the axes grids on or off; b is a boolean'
+    def grid(self, b=None):
+        """
+        Set the axes grids on or off; b is a boolean
+        if b is None, toggle the grid state
+        """
         self.xaxis.grid(b)
         self.yaxis.grid(b)
 

lib/matplotlib/axis.py

@@ -615,10 +615,12 @@ def get_minor_ticks(self):
 
         return ticks
 
-    def grid(self, b, which='major'): 
+    def grid(self, b=None, which='major'): 
         """
         Set the axis grid on or off; b is a boolean use which =
         'major' | 'minor' to set the grid for major or minor ticks
+
+        if b is None, toggle the grid state
         """
         if which.lower().find('minor')>=0:
             if b is None: self._gridOnMinor = not self._gridOnMinor