Merge pull request #10099 from matplotlib/auto-backport-of-pr-10098

QuLogic · web-flow · commit d5f4d01f2d7a · 2017-12-26T18:08:00.000-05:00
Backport PR #10098 on branch v2.1.x
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -2018,6 +2018,8 @@ def __init__(self, ax, onselect, drawtype='box',
         a box or nothing between click and actual position by setting
 
         ``drawtype = 'line'``, ``drawtype='box'`` or ``drawtype = 'none'``.
+        Drawing a line would result in a line from vertex A to vertex C in
+        a rectangle ABCD.
 
         *spancoords* is one of 'data' or 'pixels'.  If 'data', *minspanx*
         and *minspanx* will be interpreted in the same coordinates as
