matplotlib · timhoffm · Apr 28, 2021 · Apr 28, 2021 · Apr 28, 2021
diff --git a/doc/api/axis_api.rst b/doc/api/axis_api.rst
@@ -169,17 +169,6 @@ Units
    Axis.update_units
 
 
-Incremental navigation
-----------------------
-
-.. autosummary::
-   :toctree: _as_gen
-   :template: autosummary.rst
-   :nosignatures:
-
-   Axis.pan
-   Axis.zoom
-
 XAxis Specific
 --------------
 

diff --git a/doc/api/next_api_changes/removals/20095-ES.rst b/doc/api/next_api_changes/removals/20095-ES.rst
@@ -0,0 +1,20 @@
+Axis and Locator ``pan`` and ``zoom``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The unused ``pan`` and ``zoom`` methods of `~.axis.Axis` and `~.ticker.Locator`
+have been removed.  Panning and zooming are now implemented using the
+``start_pan``, ``drag_pan``, and ``end_pan`` methods of `~.axes.Axes`.
+
+Ticker Locators and Formatters
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The following deprecated `.Locator`\s and `.Formatter`\s have been removed:
+
+* ``OldScalarFormatter``, ``IndexFormatter`` and ``IndexDateFormatter``; use
+  `.FuncFormatter` instead.
+* ``OldAutoLocator``
+
+The following deprecated properties and methods have been removed:
+
+* ``DateFormatter.illegal_s``
+* ``Locator.refresh()`` and the associated helper methods
+  ``NavigationToolbar2.draw()`` and ``ToolViewsPositions.refresh_locators()``
diff --git a/doc/api/prev_api_changes/api_changes_3.3.0/deprecations.rst b/doc/api/prev_api_changes/api_changes_3.3.0/deprecations.rst
@@ -162,7 +162,7 @@ The ``on_mappable_changed`` and ``update_bruteforce`` methods of
 `~matplotlib.colorbar.Colorbar` are deprecated; both can be replaced by calls
 to `~matplotlib.colorbar.Colorbar.update_normal`.
 
-``OldScalarFormatter``, ``IndexFormatter`` and ``DateIndexFormatter``
+``OldScalarFormatter``, ``IndexFormatter`` and ``IndexDateFormatter``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 These formatters are deprecated.  Their functionality can be implemented using
 e.g. `.FuncFormatter`.

diff --git a/lib/matplotlib/axis.py b/lib/matplotlib/axis.py
@@ -1867,16 +1867,6 @@ def _update_offset_text_position(self, bboxes, bboxes2):
         """
         raise NotImplementedError('Derived must override')
 
-    @_api.deprecated("3.3")
-    def pan(self, numsteps):
-        """Pan by *numsteps* (can be positive or negative)."""
-        self.major.locator.pan(numsteps)
-
-    @_api.deprecated("3.3")
-    def zoom(self, direction):
-        """Zoom in/out on axis; if *direction* is >0 zoom in, else zoom out."""
-        self.major.locator.zoom(direction)
-
     def axis_date(self, tz=None):
         """
         Set up axis ticks and labels to treat data along this Axis as dates.

diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -3136,7 +3136,7 @@ def release_pan(self, event):
             'motion_notify_event', self.mouse_move)
         for ax in self._pan_info.axes:
             ax.end_pan()
-        self._draw()
+        self.canvas.draw_idle()
         self._pan_info = None
         self.push_current()
 
@@ -3198,7 +3198,7 @@ def release_zoom(self, event):
         # "cancel" a zoom action by zooming by less than 5 pixels.
         if ((abs(event.x - start_x) < 5 and event.key != "y")
                 or (abs(event.y - start_y) < 5 and event.key != "x")):
-            self._draw()
+            self.canvas.draw_idle()
             self._zoom_info = None
             return
 
@@ -3213,7 +3213,7 @@ def release_zoom(self, event):
                 (start_x, start_y, event.x, event.y),
                 self._zoom_info.direction, event.key, twinx, twiny)
 
-        self._draw()
+        self.canvas.draw_idle()
         self._zoom_info = None
         self.push_current()
 
@@ -3228,27 +3228,6 @@ def push_current(self):
                  for ax in self.canvas.figure.axes}))
         self.set_history_buttons()
 
-    # Can be removed once Locator.refresh() is removed, and replaced by an
-    # inline call to self.canvas.draw_idle().
-    def _draw(self):
-        for a in self.canvas.figure.get_axes():
-            xaxis = getattr(a, 'xaxis', None)
-            yaxis = getattr(a, 'yaxis', None)
-            locators = []
-            if xaxis is not None:
-                locators.append(xaxis.get_major_locator())
-                locators.append(xaxis.get_minor_locator())
-            if yaxis is not None:
-                locators.append(yaxis.get_major_locator())
-                locators.append(yaxis.get_minor_locator())
-
-            for loc in locators:
-                mpl.ticker._if_refresh_overridden_call_and_emit_deprec(loc)
-        self.canvas.draw_idle()
-
-    draw = _api.deprecate_privatize_attribute(
-        "3.3", alternative="toolbar.canvas.draw_idle()")
-
     def _update_view(self):
         """
         Update the viewlim and position from the view and position stack for

diff --git a/lib/matplotlib/backend_tools.py b/lib/matplotlib/backend_tools.py
@@ -22,7 +22,7 @@
 
 import matplotlib as mpl
 from matplotlib._pylab_helpers import Gcf
-from matplotlib import _api, cbook
+from matplotlib import cbook
 
 
 class Cursors(IntEnum):  # Must subclass int for the macOS backend.
@@ -553,31 +553,6 @@ def update_home_views(self, figure=None):
             if a not in self.home_views[figure]:
                 self.home_views[figure][a] = a._get_view()
 
-    # Can be removed once Locator.refresh() is removed, and replaced by an
-    # inline call to self.figure.canvas.draw_idle().
-    def _refresh_locators(self):
-        for a in self.figure.get_axes():
-            xaxis = getattr(a, 'xaxis', None)
-            yaxis = getattr(a, 'yaxis', None)
-            zaxis = getattr(a, 'zaxis', None)
-            locators = []
-            if xaxis is not None:
-                locators.append(xaxis.get_major_locator())
-                locators.append(xaxis.get_minor_locator())
-            if yaxis is not None:
-                locators.append(yaxis.get_major_locator())
-                locators.append(yaxis.get_minor_locator())
-            if zaxis is not None:
-                locators.append(zaxis.get_major_locator())
-                locators.append(zaxis.get_minor_locator())
-
-            for loc in locators:
-                mpl.ticker._if_refresh_overridden_call_and_emit_deprec(loc)
-        self.figure.canvas.draw_idle()
-
-    refresh_locators = _api.deprecate_privatize_attribute(
-        "3.3", alternative="self.figure.canvas.draw_idle()")
-
     def home(self):
         """Recall the first view and position from the stack."""
         self.views[self.figure].home()
@@ -732,7 +707,7 @@ def _cancel_action(self):
         for zoom_id in self._ids_zoom:
             self.figure.canvas.mpl_disconnect(zoom_id)
         self.toolmanager.trigger_tool('rubberband', self)
-        self.toolmanager.get_tool(_views_positions)._refresh_locators()
+        self.figure.canvas.draw_idle()
         self._xypress = None
         self._button_pressed = None
         self._ids_zoom = []
@@ -859,7 +834,7 @@ def _cancel_action(self):
         self._xypress = []
         self.figure.canvas.mpl_disconnect(self._id_drag)
         self.toolmanager.messagelock.release(self)
-        self.toolmanager.get_tool(_views_positions)._refresh_locators()
+        self.figure.canvas.draw_idle()
 
     def _press(self, event):
         if event.button == 1:

diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -166,15 +166,12 @@
   date information.  This is most useful when used with the `AutoDateLocator`.
 
 * `DateFormatter`: use `~datetime.datetime.strftime` format strings.
-
-* `IndexDateFormatter`: date plots with implicit *x* indexing.
 """
 
 import datetime
 import functools
 import logging
 import math
-import re
 
 from dateutil.rrule import (rrule, MO, TU, WE, TH, FR, SA, SU, YEARLY,
                             MONTHLY, WEEKLY, DAILY, HOURLY, MINUTELY,
@@ -189,7 +186,7 @@
 
 __all__ = ('datestr2num', 'date2num', 'num2date', 'num2timedelta', 'drange',
            'epoch2num', 'num2epoch', 'set_epoch', 'get_epoch', 'DateFormatter',
-           'ConciseDateFormatter', 'IndexDateFormatter', 'AutoDateFormatter',
+           'ConciseDateFormatter', 'AutoDateFormatter',
            'DateLocator', 'RRuleLocator', 'AutoDateLocator', 'YearLocator',
            'MonthLocator', 'WeekdayLocator',
            'DayLocator', 'HourLocator', 'MinuteLocator',
@@ -607,11 +604,6 @@ class DateFormatter(ticker.Formatter):
     `~datetime.datetime.strftime` format string.
     """
 
-    @_api.deprecated("3.3")
-    @property
-    def illegal_s(self):
-        return re.compile(r"((^|[^%])(%%)*%s)")
-
     def __init__(self, fmt, tz=None, *, usetex=None):
         """
         Parameters
@@ -639,33 +631,6 @@ def set_tzinfo(self, tz):
         self.tz = tz
 
 
-@_api.deprecated("3.3")
-class IndexDateFormatter(ticker.Formatter):
-    """Use with `.IndexLocator` to cycle format strings by index."""
-
-    def __init__(self, t, fmt, tz=None):
-        """
-        Parameters
-        ----------
-        t : list of float
-            A sequence of dates (floating point days).
-        fmt : str
-            A `~datetime.datetime.strftime` format string.
-        """
-        if tz is None:
-            tz = _get_rc_timezone()
-        self.t = t
-        self.fmt = fmt
-        self.tz = tz
-
-    def __call__(self, x, pos=0):
-        """Return the label for time *x* at position *pos*."""
-        ind = int(round(x))
-        if ind >= len(self.t) or ind <= 0:
-            return ''
-        return num2date(self.t[ind], self.tz).strftime(self.fmt)
-
-
 class ConciseDateFormatter(ticker.Formatter):
     """
     A `.Formatter` which attempts to figure out the best format to use for the

diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -17,7 +17,7 @@
 
 from matplotlib.dates import (
     date2num, num2date, datestr2num, drange, epoch2num,
-    num2epoch, DateFormatter, IndexDateFormatter, DateLocator,
+    num2epoch, DateFormatter, DateLocator,
     RRuleLocator, YearLocator, MonthLocator, WeekdayLocator, DayLocator,
     HourLocator, MinuteLocator, SecondLocator, rrule, MO, TU, WE, TH, FR,
     SA, SU, YEARLY, MONTHLY, WEEKLY, DAILY, HOURLY, MINUTELY, SECONDLY,

diff --git a/lib/matplotlib/tests/test_ticker.py b/lib/matplotlib/tests/test_ticker.py
@@ -8,7 +8,6 @@
 import pytest
 
 import matplotlib as mpl
-from matplotlib import _api
 import matplotlib.pyplot as plt
 import matplotlib.ticker as mticker
 
@@ -444,21 +443,6 @@ def test_set_params(self):
         assert sym.numticks == 8
 
 
-class TestIndexFormatter:
-    @pytest.mark.parametrize('x, label', [(-2, ''),
-                                          (-1, 'label0'),
-                                          (0, 'label0'),
-                                          (0.5, 'label1'),
-                                          (1, 'label1'),
-                                          (1.5, 'label2'),
-                                          (2, 'label2'),
-                                          (2.5, '')])
-    def test_formatting(self, x, label):
-        with _api.suppress_matplotlib_deprecation_warning():
-            formatter = mticker.IndexFormatter(['label0', 'label1', 'label2'])
-        assert formatter(x) == label
-
-
 class TestScalarFormatter:
     offset_data = [
         (123, 189, 0),