matplotlib
diff --git a/‎lib/matplotlib/collections.py
Copy file name to clipboardExpand all lines: lib/matplotlib/collections.py
+1Lines changed: 1 addition & 0 deletions b/‎lib/matplotlib/collections.py
Copy file name to clipboardExpand all lines: lib/matplotlib/collections.py
+1Lines changed: 1 addition & 0 deletions
@@ -1464,6 +1464,7 @@ def __init__(self,
         """
         if positions is None:
             raise ValueError('positions must be an array-like object')
+        # Force a copy of positions
         positions = np.array(positions, copy=True)
         segment = (lineoffset + linelength / 2.,
                    lineoffset - linelength / 2.)