Ensure that the axis is preserved when slicing or copying Coords

cis/__init__.py

@@ -17,8 +17,8 @@
 ungridded, but not a mix. For ungridded data lists it is assumed that all objects share the same coordinates.
 """
 __author__ = "David Michel, Daniel Wallis, Duncan Watson-Parris, Richard Wilkinson, Ian Bush, Matt Kendall, John Holt"
-__version__ = "1.5.1"
-__status__ = "Stable"
+__version__ = "1.5.2"
+__status__ = "Dev"
 __website__ = "http://www.cistools.net/"
 
 __all__ = ['read_data', 'read_data_list', 'get_variables']

cis/data_io/Coord.py

@@ -44,7 +44,7 @@ def __getitem__(self, keys):
         #  data, and will lead to post-processing before slicing.
         # TODO: We could be cleverer and figure out the right slice across the various data managers to only read the
         #  right data from disk.
-        return Coord(self.data[keys].copy(), metadata=deepcopy(self.metadata))
+        return Coord(self.data[keys].copy(), metadata=deepcopy(self.metadata), axis=self.axis)
 
     @property
     def points(self):
@@ -120,7 +120,7 @@ def copy(self, data=None):
         :return: Copied :class:`Coord`
         """
         data = data if data is not None else numpy.ma.copy(self.data)  # Will call lazy load method
-        return Coord(data, self.metadata)
+        return Coord(data, self.metadata, axis=self.axis)
 
 
 class CoordList(list):

doc/whats_new_1.5.rst

@@ -35,3 +35,7 @@ CIS 1.5.1 fixes
 ===============
  * Minor fix in interpreting units when reading some NetCDF data in Python 2
  * Fixed an issue where line and scatter plots weren't respecting the yaxis keyword
+
+CIS 1.5.2 fixes
+===============
+ * Slicing and copying Coords now preserves the axis