CLN: Remove the Panel4D and PanelND classes

Deprecated back in v0.19.0

xref pandas-devgh-13147

Author: gfyoung

doc/source/cookbook.rst

@@ -411,16 +411,6 @@ Levels
 `Flatten Hierarchical columns
 <http://stackoverflow.com/questions/14507794/python-pandas-how-to-flatten-a-hierarchical-index-in-columns>`__
 
-panelnd
-*******
-
-The :ref:`panelnd<dsintro.panelnd>` docs.
-
-`Construct a 5D panelnd
-<http://stackoverflow.com/questions/18748598/why-my-panelnd-factory-throwing-a-keyerror>`__
-
-.. _cookbook.missing_data:
-
 Missing Data
 ------------
 

doc/source/dsintro.rst

@@ -982,21 +982,3 @@ Alternatively, one can convert to an xarray ``DataArray``.
    p.to_xarray()
 
 You can see the full-documentation for the `xarray package <http://xarray.pydata.org/en/stable/>`__.
-
-.. _dsintro.panelnd:
-.. _dsintro.panel4d:
-
-Panel4D and PanelND (Deprecated)
---------------------------------
-
-.. warning::
-
-    In 0.19.0 ``Panel4D`` and ``PanelND`` are deprecated and will be removed in
-    a future version. The recommended way to represent these types of
-    n-dimensional data are with the
-    `xarray package <http://xarray.pydata.org/en/stable/>`__.
-    Pandas provides a :meth:`~Panel4D.to_xarray` method to automate
-    this conversion.
-
-See the `docs of a previous version <http://pandas.pydata.org/pandas-docs/version/0.18.1/dsintro.html#panel4d-experimental>`__
-for documentation on these objects.

doc/source/whatsnew/v0.23.0.txt

@@ -249,6 +249,7 @@ Removal of prior version deprecations/changes
 - The ``Series``, ``Categorical``, and ``Index`` classes have dropped the ``reshape`` method (:issue:`13012`)
 - ``pandas.tseries.frequencies.get_standard_freq`` has been removed in favor of ``pandas.tseries.frequencies.to_offset(freq).rule_code`` (:issue:`13874`)
 - The ``freqstr`` keyword has been removed from ``pandas.tseries.frequencies.to_offset`` in favor of ``freq`` (:issue:`13874`)
+- The ``Panel4D`` and ``PanelND`` classes have been removed (:issue:`13776`)
 
 .. _whatsnew_0230.performance:
 

pandas/core/api.py

@@ -22,7 +22,6 @@
 from pandas.core.series import Series
 from pandas.core.frame import DataFrame
 from pandas.core.panel import Panel, WidePanel
-from pandas.core.panel4d import Panel4D
 
 # TODO: Remove import when statsmodels updates #18264
 from pandas.core.reshape.reshape import get_dummies

pandas/core/dtypes/generic.py

@@ -43,7 +43,7 @@ def _check(cls, inst):
 
 ABCSeries = create_pandas_abc_type("ABCSeries", "_typ", ("series", ))
 ABCDataFrame = create_pandas_abc_type("ABCDataFrame", "_typ", ("dataframe", ))
-ABCPanel = create_pandas_abc_type("ABCPanel", "_typ", ("panel", "panel4d"))
+ABCPanel = create_pandas_abc_type("ABCPanel", "_typ", ("panel",))
 ABCSparseSeries = create_pandas_abc_type("ABCSparseSeries", "_subtyp",
                                          ('sparse_series',
                                           'sparse_time_series'))

pandas/core/generic.py

@@ -7146,7 +7146,7 @@ def describe(self, percentiles=None, include=None, exclude=None):
         DataFrame.select_dtypes
         """
         if self.ndim >= 3:
-            msg = "describe is not implemented on Panel or PanelND objects."
+            msg = "describe is not implemented on Panel objects."
             raise NotImplementedError(msg)
         elif self.ndim == 2 and self.columns.size == 0:
             raise ValueError("Cannot describe a DataFrame without columns")

pandas/core/panel.py

@@ -1224,9 +1224,6 @@ def reindex(self, *args, **kwargs):
             kwargs['minor_axis'] = minor
         axes = validate_axis_style_args(self, args, kwargs, 'labels',
                                         'reindex')
-        if self.ndim >= 4:
-            # Hack for PanelND
-            axes = {}
         kwargs.update(axes)
         kwargs.pop('axis', None)
         kwargs.pop('labels', None)

pandas/core/panel4d.py

@@ -24,7 +24,7 @@
 from pandas.core.dtypes.missing import array_equivalent
 
 import numpy as np
-from pandas import (Series, DataFrame, Panel, Panel4D, Index,
+from pandas import (Series, DataFrame, Panel, Index,
                     MultiIndex, Int64Index, isna, concat, to_datetime,
                     SparseSeries, SparseDataFrame, PeriodIndex,
                     DatetimeIndex, TimedeltaIndex)
@@ -180,7 +180,6 @@ class DuplicateWarning(Warning):
     DataFrame: u('frame'),
     SparseDataFrame: u('sparse_frame'),
     Panel: u('wide'),
-    Panel4D: u('ndim'),
 }
 
 # storer class map
@@ -203,7 +202,6 @@ class DuplicateWarning(Warning):
     u('appendable_frame'): 'AppendableFrameTable',
     u('appendable_multiframe'): 'AppendableMultiFrameTable',
     u('appendable_panel'): 'AppendablePanelTable',
-    u('appendable_ndim'): 'AppendableNDimTable',
     u('worm'): 'WORMTable',
     u('legacy_frame'): 'LegacyFrameTable',
     u('legacy_panel'): 'LegacyPanelTable',
@@ -212,8 +210,7 @@ class DuplicateWarning(Warning):
 # axes map
 _AXES_MAP = {
     DataFrame: [0],
-    Panel: [1, 2],
-    Panel4D: [1, 2, 3],
+    Panel: [1, 2]
 }
 
 # register our configuration options
@@ -924,7 +921,7 @@ def append(self, key, value, format=None, append=True, columns=None,
         Parameters
         ----------
         key : object
-        value : {Series, DataFrame, Panel, Panel4D}
+        value : {Series, DataFrame, Panel}
         format: 'table' is the default
             table(t) : table format
                        Write as a PyTables Table structure which may perform
@@ -4346,14 +4343,6 @@ def is_transposed(self):
         return self.data_orientation != tuple(range(self.ndim))
 
 
-class AppendableNDimTable(AppendablePanelTable):
-
-    """ suppor the new appendable table formats """
-    table_type = u('appendable_ndim')
-    ndim = 4
-    obj_type = Panel4D
-
-
 def _reindex_axis(obj, axis, labels, other=None):
     ax = obj._get_axis(axis)
     labels = _ensure_index(labels)

pandas/core/panelnd.py

@@ -51,8 +51,7 @@ class TestPDApi(Base):
                'TimedeltaIndex', 'Timestamp', 'Interval', 'IntervalIndex']
 
     # these are already deprecated; awaiting removal
-    deprecated_classes = ['WidePanel', 'Panel4D', 'TimeGrouper',
-                          'Expr', 'Term']
+    deprecated_classes = ['WidePanel', 'TimeGrouper', 'Expr', 'Term']
 
     # these should be deprecated in the future
     deprecated_classes_in_future = ['Panel']

pandas/io/pytables.py

@@ -99,13 +99,6 @@ def test_isna_isnull(self, isna_f):
                 expected = p.apply(isna_f)
                 tm.assert_panel_equal(result, expected)
 
-        # panel 4d
-        with catch_warnings(record=True):
-            for p in [tm.makePanel4D(), tm.add_nans_panel4d(tm.makePanel4D())]:
-                result = isna_f(p)
-                expected = p.apply(isna_f)
-                tm.assert_panel4d_equal(result, expected)
-
     def test_isna_lists(self):
         result = isna([[False]])
         exp = np.array([[False]])