tried to fix a bug where clip on distributed data objects does not work and...

tried to fix a bug where clip on distributed data objects does not work and some bugs in previously made tests

nifty5/data_objects/distributed_do.py

@@ -307,7 +307,7 @@ for f in ["sqrt", "exp", "log", "tanh", "conjugate", "sin", "cos", "tan",
 
 
 def clip(x, a_min=None, a_max=None):
-    return data_object(x.shape, np.clip(x.data, a_min, a_max), x.distaxis)
+    return data_object(x.shape, np.clip(x._data, a_min, a_max), x.distaxis)
 
 
 def from_object(object, dtype, copy, set_locked):

test/test_field.py

@@ -273,7 +273,7 @@ def test_err():
     with assert_raises(TypeError):
         ift.full(s1, [2, 3])
     with assert_raises(TypeError):
-        ift.from_global_data(s2, [0,1])
+        ift.Field(s2, [0,1])
     with assert_raises(TypeError):
         f1.outer([0,1])
     with assert_raises(ValueError):