Fix the phrasing of some sentences.

afvincent · afvincent · commit c0c6bc91a1ac · 2017-03-22T08:33:12.000+01:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -1163,8 +1163,7 @@ def eventplot(self, positions, orientation='horizontal', lineoffsets=1,
         For *linelengths*, *linewidths*, *colors*, and *linestyles*, if only
         a single value is given, that value is applied to all lines.  If an
         array-like is given, it must have the same length as *positions*, and
-        each row of the array will be applied to the corresponding row or
-        column of events.
+        each value will be applied to the corresponding row of the array.
 
         Example
         -------
diff --git a/lib/matplotlib/collections.py b/lib/matplotlib/collections.py
@@ -1314,8 +1314,8 @@ def __init__(self,
         if positions is None or len(positions) == 0:
             segments = []
         elif hasattr(positions, 'ndim') and positions.ndim > 1:
-            raise ValueError('positions cannot have a dimensionality greater '
-                             'than 1 (in the ndarray sense)')
+            raise ValueError('positions cannot be an array with more than '
+                             'one dimension.')
         elif (orientation is None or orientation.lower() == 'none' or
               orientation.lower() == 'horizontal'):
             positions.sort()
