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<h3><a href="../contents.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">API Changes</a><ul>
<li><a class="reference internal" href="#api-changes-for-3-0-1">API Changes for 3.0.1</a></li>
<li><a class="reference internal" href="#api-changes-for-3-0-0">API Changes for 3.0.0</a><ul>
<li><a class="reference internal" href="#drop-support-for-python-2">Drop support for python 2</a></li>
<li><a class="reference internal" href="#changes-to-backend-loading">Changes to backend loading</a></li>
<li><a class="reference internal" href="#axes-hist2d-now-uses-pcolormesh-instead-of-pcolorfast"><code class="docutils literal notranslate"><span class="pre">Axes.hist2d</span></code> now uses <code class="docutils literal notranslate"><span class="pre">pcolormesh</span></code> instead of <code class="docutils literal notranslate"><span class="pre">pcolorfast</span></code></a></li>
<li><a class="reference internal" href="#matplotlib-axes-axes-get-tightbbox-now-includes-all-artists"><code class="docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.get_tightbbox</span></code> now includes all artists</a></li>
<li><a class="reference internal" href="#text-set-text-with-string-argument-none-sets-string-to-empty"><code class="docutils literal notranslate"><span class="pre">Text.set_text</span></code> with string argument <code class="docutils literal notranslate"><span class="pre">None</span></code> sets string to empty</a></li>
<li><a class="reference internal" href="#axes3d-get-xlim-get-ylim-and-get-zlim-now-return-a-tuple"><code class="docutils literal notranslate"><span class="pre">Axes3D.get_xlim</span></code>, <code class="docutils literal notranslate"><span class="pre">get_ylim</span></code> and <code class="docutils literal notranslate"><span class="pre">get_zlim</span></code> now return a tuple</a></li>
<li><a class="reference internal" href="#font-manager-list-fonts-now-follows-the-platform-s-casefolding-semantics"><code class="docutils literal notranslate"><span class="pre">font_manager.list_fonts</span></code> now follows the platform's casefolding semantics</a></li>
<li><a class="reference internal" href="#bar-barh-no-longer-accepts-left-bottom-as-first-named-argument"><code class="docutils literal notranslate"><span class="pre">bar</span></code> / <code class="docutils literal notranslate"><span class="pre">barh</span></code> no longer accepts <code class="docutils literal notranslate"><span class="pre">left</span></code> / <code class="docutils literal notranslate"><span class="pre">bottom</span></code> as first named argument</a></li>
<li><a class="reference internal" href="#different-exception-types-for-undocumented-options">Different exception types for undocumented options</a></li>
<li><a class="reference internal" href="#improved-call-signature-for-axes-margins">Improved call signature for <code class="docutils literal notranslate"><span class="pre">Axes.margins</span></code></a></li>
<li><a class="reference internal" href="#explicit-arguments-instead-of-args-kwargs">Explicit arguments instead of *args, **kwargs</a></li>
<li><a class="reference internal" href="#cleanup-decorators-and-test-classes-no-longer-destroy-warnings-filter-on-exit">Cleanup decorators and test classes no longer destroy warnings filter on exit</a></li>
<li><a class="reference internal" href="#non-interactive-figuremanager-classes-are-now-aliases-of-figuremanagerbase">Non-interactive FigureManager classes are now aliases of FigureManagerBase</a></li>
<li><a class="reference internal" href="#change-to-the-output-of-image-thumbnail">Change to the output of <code class="docutils literal notranslate"><span class="pre">image.thumbnail</span></code></a></li>
<li><a class="reference internal" href="#funcanimation-now-draws-artists-according-to-their-zorder-when-blitting"><code class="docutils literal notranslate"><span class="pre">FuncAnimation</span></code> now draws artists according to their zorder when blitting</a></li>
<li><a class="reference internal" href="#contour-color-autoscaling-improvements">Contour color autoscaling improvements</a></li>
<li><a class="reference internal" href="#streamplot-last-row-and-column-fixed">Streamplot last row and column fixed</a></li>
<li><a class="reference internal" href="#changed-default-autodatelocator-kwarg-interval-multiples-to-true">Changed default <code class="docutils literal notranslate"><span class="pre">AutoDateLocator</span></code> kwarg <em>interval_multiples</em> to <code class="docutils literal notranslate"><span class="pre">True</span></code></a></li>
<li><a class="reference internal" href="#axes-get-position-now-returns-actual-position-if-aspect-changed"><code class="docutils literal notranslate"><span class="pre">Axes.get_position</span></code> now returns actual position if aspect changed</a></li>
<li><a class="reference internal" href="#the-ticks-for-colorbar-now-adjust-for-the-size-of-the-colorbar">The ticks for colorbar now adjust for the size of the colorbar</a></li>
<li><a class="reference internal" href="#colorbar-for-log-scaled-hexbin">Colorbar for log-scaled hexbin</a></li>
<li><a class="reference internal" href="#pgf-backend-now-explicitly-makes-black-text-black">PGF backend now explicitly makes black text black</a></li>
<li><a class="reference internal" href="#blacklisted-rcparams-no-longer-updated-by-rcdefaults-rc-file-defaults-rc-file">Blacklisted rcparams no longer updated by <code class="docutils literal notranslate"><span class="pre">rcdefaults</span></code>, <code class="docutils literal notranslate"><span class="pre">rc_file_defaults</span></code>, <code class="docutils literal notranslate"><span class="pre">rc_file</span></code></a></li>
<li><a class="reference internal" href="#callbackregistry-now-stores-callbacks-using-stdlib-s-weakmethods"><code class="docutils literal notranslate"><span class="pre">CallbackRegistry</span></code> now stores callbacks using stdlib's <code class="docutils literal notranslate"><span class="pre">WeakMethod</span></code>s</a></li>
<li><a class="reference internal" href="#changes-regarding-the-text-latex-unicode-rcparam">Changes regarding the text.latex.unicode rcParam</a></li>
<li><a class="reference internal" href="#return-type-of-artistinspector-get-aliases-changed">Return type of ArtistInspector.get_aliases changed</a></li>
<li><a class="reference internal" href="#removed-pytz-as-a-dependency">Removed <code class="docutils literal notranslate"><span class="pre">pytz</span></code> as a dependency</a></li>
<li><a class="reference internal" href="#deprecations">Deprecations</a><ul>
<li><a class="reference internal" href="#modules">Modules</a></li>
<li><a class="reference internal" href="#classes-methods-functions-and-attributes">Classes, methods, functions, and attributes</a></li>
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<li><a class="reference internal" href="#marker-styles">marker styles</a></li>
<li><a class="reference internal" href="#deprecation-of-locatableaxes-in-toolkits">Deprecation of <code class="docutils literal notranslate"><span class="pre">LocatableAxes</span></code> in toolkits</a></li>
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<li><a class="reference internal" href="#removals">Removals</a><ul>
<li><a class="reference internal" href="#hold-machinery">Hold machinery</a></li>
<li><a class="reference internal" href="#removal-of-deprecated-backends">Removal of deprecated backends</a></li>
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<div class="section" id="api-changes">
<h1>API Changes<a class="headerlink" href="#api-changes" title="Permalink to this headline">¶</a></h1>
<p>A log of changes to the most recent version of Matplotlib that affect the
outward-facing API. If updating Matplotlib breaks your scripts, this list may
help you figure out what caused the breakage and how to fix it by updating
your code. For API changes in older versions see <a class="reference internal" href="api_changes_old.html"><span class="doc">Old API Changes</span></a>.</p>
<p>For new features that were added to Matplotlib, see <a class="reference internal" href="../users/whats_new.html#whats-new"><span class="std std-ref">What's new in Matplotlib 3.0</span></a>.</p>
<p>This pages lists API changes for the most recent version of Matplotlib.</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="api_changes_old.html">Old API Changes</a></li>
</ul>
</div>
<blockquote>
<div><div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The list below is a table of contents of individual files from the 'next_api_changes' folder.
When a release is made</p>
<blockquote class="last">
<div><ul class="simple">
<li>The full text list below should be moved into its own file in 'prev_api_changes'</li>
<li>All the files in 'next_api_changes' should be moved to the bottom of this page</li>
<li>This note, and the toctree below should be commented out</li>
</ul>
</div></blockquote>
</div>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="next_api_changes/2018-09-22-TH-win32InstalledFonts.html">matplotlib.font_manager.win32InstalledFonts return value</a></li>
<li class="toctree-l1"><a class="reference internal" href="next_api_changes/2018-10-24-JMK.html">Matplotlib.use now has an ImportError for interactive backend</a></li>
<li class="toctree-l1"><a class="reference internal" href="next_api_changes/README.html">Adding API change notes</a></li>
</ul>
</div>
</div></blockquote>
<div class="section" id="api-changes-for-3-0-1">
<h2>API Changes for 3.0.1<a class="headerlink" href="#api-changes-for-3-0-1" title="Permalink to this headline">¶</a></h2>
<p><a class="reference internal" href="tight_layout_api.html#matplotlib.tight_layout.auto_adjust_subplotpars" title="matplotlib.tight_layout.auto_adjust_subplotpars"><code class="xref py py-obj docutils literal notranslate"><span class="pre">tight_layout.auto_adjust_subplotpars</span></code></a> can return <code class="docutils literal notranslate"><span class="pre">None</span></code> now if the new
subplotparams will collapse axes to zero width or height. This prevents
<code class="docutils literal notranslate"><span class="pre">tight_layout</span></code> from being executed. Similarly
<a class="reference internal" href="tight_layout_api.html#matplotlib.tight_layout.get_tight_layout_figure" title="matplotlib.tight_layout.get_tight_layout_figure"><code class="xref py py-obj docutils literal notranslate"><span class="pre">tight_layout.get_tight_layout_figure</span></code></a> will return None.</p>
</div>
<div class="section" id="api-changes-for-3-0-0">
<h2>API Changes for 3.0.0<a class="headerlink" href="#api-changes-for-3-0-0" title="Permalink to this headline">¶</a></h2>
<div class="section" id="drop-support-for-python-2">
<h3>Drop support for python 2<a class="headerlink" href="#drop-support-for-python-2" title="Permalink to this headline">¶</a></h3>
<p>Matplotlib 3 only supports python 3.5 and higher.</p>
</div>
<div class="section" id="changes-to-backend-loading">
<h3>Changes to backend loading<a class="headerlink" href="#changes-to-backend-loading" title="Permalink to this headline">¶</a></h3>
<p>Failure to load backend modules (<code class="docutils literal notranslate"><span class="pre">macosx</span></code> on non-framework builds and
<code class="docutils literal notranslate"><span class="pre">gtk3</span></code> when running headless) now raises <a class="reference external" href="https://docs.python.org/3/library/exceptions.html#ImportError" title="(in Python v3.7)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ImportError</span></code></a> (instead of
<a class="reference external" href="https://docs.python.org/3/library/exceptions.html#RuntimeError" title="(in Python v3.7)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">RuntimeError</span></code></a> and <a class="reference external" href="https://docs.python.org/3/library/exceptions.html#TypeError" title="(in Python v3.7)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">TypeError</span></code></a>, respectively).</p>
<p>Third-party backends that integrate with an interactive framework are now
encouraged to define the <code class="docutils literal notranslate"><span class="pre">required_interactive_framework</span></code> global value to one
of the following values: "qt5", "qt4", "gtk3", "wx", "tk", or "macosx". This
information will be used to determine whether it is possible to switch from a
backend to another (specifically, whether they use the same interactive
framework).</p>
</div>
<div class="section" id="axes-hist2d-now-uses-pcolormesh-instead-of-pcolorfast">
<h3><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.hist2d.html#matplotlib.axes.Axes.hist2d" title="matplotlib.axes.Axes.hist2d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.hist2d</span></code></a> now uses <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.pcolormesh.html#matplotlib.axes.Axes.pcolormesh" title="matplotlib.axes.Axes.pcolormesh"><code class="xref py py-obj docutils literal notranslate"><span class="pre">pcolormesh</span></code></a> instead of <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.pcolorfast.html#matplotlib.axes.Axes.pcolorfast" title="matplotlib.axes.Axes.pcolorfast"><code class="xref py py-obj docutils literal notranslate"><span class="pre">pcolorfast</span></code></a><a class="headerlink" href="#axes-hist2d-now-uses-pcolormesh-instead-of-pcolorfast" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.hist2d.html#matplotlib.axes.Axes.hist2d" title="matplotlib.axes.Axes.hist2d"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.hist2d</span></code></a> now uses <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.pcolormesh.html#matplotlib.axes.Axes.pcolormesh" title="matplotlib.axes.Axes.pcolormesh"><code class="xref py py-obj docutils literal notranslate"><span class="pre">pcolormesh</span></code></a> instead of <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.pcolorfast.html#matplotlib.axes.Axes.pcolorfast" title="matplotlib.axes.Axes.pcolorfast"><code class="xref py py-obj docutils literal notranslate"><span class="pre">pcolorfast</span></code></a>,
which will improve the handling of log-axes. Note that the
returned <em>image</em> now is of type <a class="reference internal" href="collections_api.html#matplotlib.collections.QuadMesh" title="matplotlib.collections.QuadMesh"><code class="xref py py-obj docutils literal notranslate"><span class="pre">QuadMesh</span></code></a>
instead of <a class="reference internal" href="image_api.html#matplotlib.image.AxesImage" title="matplotlib.image.AxesImage"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AxesImage</span></code></a>.</p>
</div>
<div class="section" id="matplotlib-axes-axes-get-tightbbox-now-includes-all-artists">
<h3><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_tightbbox.html#matplotlib.axes.Axes.get_tightbbox" title="matplotlib.axes.Axes.get_tightbbox"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.get_tightbbox</span></code></a> now includes all artists<a class="headerlink" href="#matplotlib-axes-axes-get-tightbbox-now-includes-all-artists" title="Permalink to this headline">¶</a></h3>
<p>For Matplotlib 3.0, <em>all</em> artists are now included in the bounding box
returned by <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_tightbbox.html#matplotlib.axes.Axes.get_tightbbox" title="matplotlib.axes.Axes.get_tightbbox"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.get_tightbbox</span></code></a>.</p>
<p><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_tightbbox.html#matplotlib.axes.Axes.get_tightbbox" title="matplotlib.axes.Axes.get_tightbbox"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.get_tightbbox</span></code></a> adds a new kwarg <code class="docutils literal notranslate"><span class="pre">bbox_extra_artists</span></code>
to manually specify the list of artists on the axes to include in the
tight bounding box calculation.</p>
<p>Layout tools like <a class="reference internal" href="_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.tight_layout" title="matplotlib.figure.Figure.tight_layout"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Figure.tight_layout</span></code></a>, <code class="docutils literal notranslate"><span class="pre">constrained_layout</span></code>,
and <code class="docutils literal notranslate"><span class="pre">fig.savefig('fname.png',</span> <span class="pre">bbox_inches="tight")</span></code> use
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_tightbbox.html#matplotlib.axes.Axes.get_tightbbox" title="matplotlib.axes.Axes.get_tightbbox"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.get_tightbbox</span></code></a> to determine the bounds of each axes on
a figure and adjust spacing between axes.</p>
<p>In Matplotlib 2.2 <code class="docutils literal notranslate"><span class="pre">get_tightbbox</span></code> started to include legends made on the
axes, but still excluded some other artists, like text that may overspill an
axes. This has been expanded to include <em>all</em> artists.</p>
<p>This new default may be overridden in either of three ways:</p>
<ol class="arabic simple">
<li>Make the artist to be excluded a child of the figure, not the axes. E.g.,
call <code class="docutils literal notranslate"><span class="pre">fig.legend()</span></code> instead of <code class="docutils literal notranslate"><span class="pre">ax.legend()</span></code> (perhaps using
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_legend_handles_labels.html#matplotlib.axes.Axes.get_legend_handles_labels" title="matplotlib.axes.Axes.get_legend_handles_labels"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_legend_handles_labels</span></code></a> to gather handles and
labels from the parent axes).</li>
<li>If the artist is a child of the axes, set the artist property
<code class="docutils literal notranslate"><span class="pre">artist.set_in_layout(False)</span></code>.</li>
<li>Manually specify a list of artists in the new kwarg <code class="docutils literal notranslate"><span class="pre">bbox_extra_artists</span></code>.</li>
</ol>
</div>
<div class="section" id="text-set-text-with-string-argument-none-sets-string-to-empty">
<h3><code class="xref py py-obj docutils literal notranslate"><span class="pre">Text.set_text</span></code> with string argument <code class="docutils literal notranslate"><span class="pre">None</span></code> sets string to empty<a class="headerlink" href="#text-set-text-with-string-argument-none-sets-string-to-empty" title="Permalink to this headline">¶</a></h3>
<p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Text.set_text</span></code> when passed a string value of <code class="docutils literal notranslate"><span class="pre">None</span></code> would set the
string to <code class="docutils literal notranslate"><span class="pre">"None"</span></code>, so subsequent calls to <code class="xref py py-obj docutils literal notranslate"><span class="pre">Text.get_text</span></code> would return
the ambiguous <code class="docutils literal notranslate"><span class="pre">"None"</span></code> string.</p>
<p>This change sets text objects passed <code class="docutils literal notranslate"><span class="pre">None</span></code> to have empty strings, so that
<code class="xref py py-obj docutils literal notranslate"><span class="pre">Text.get_text</span></code> returns an empty string.</p>
</div>
<div class="section" id="axes3d-get-xlim-get-ylim-and-get-zlim-now-return-a-tuple">
<h3><code class="docutils literal notranslate"><span class="pre">Axes3D.get_xlim</span></code>, <code class="docutils literal notranslate"><span class="pre">get_ylim</span></code> and <code class="docutils literal notranslate"><span class="pre">get_zlim</span></code> now return a tuple<a class="headerlink" href="#axes3d-get-xlim-get-ylim-and-get-zlim-now-return-a-tuple" title="Permalink to this headline">¶</a></h3>
<p>They previously returned an array. Returning a tuple is consistent with the
behavior for 2D axes.</p>
</div>
<div class="section" id="font-manager-list-fonts-now-follows-the-platform-s-casefolding-semantics">
<h3><code class="docutils literal notranslate"><span class="pre">font_manager.list_fonts</span></code> now follows the platform's casefolding semantics<a class="headerlink" href="#font-manager-list-fonts-now-follows-the-platform-s-casefolding-semantics" title="Permalink to this headline">¶</a></h3>
<p>i.e., it behaves case-insensitively on Windows only.</p>
</div>
<div class="section" id="bar-barh-no-longer-accepts-left-bottom-as-first-named-argument">
<h3><code class="docutils literal notranslate"><span class="pre">bar</span></code> / <code class="docutils literal notranslate"><span class="pre">barh</span></code> no longer accepts <code class="docutils literal notranslate"><span class="pre">left</span></code> / <code class="docutils literal notranslate"><span class="pre">bottom</span></code> as first named argument<a class="headerlink" href="#bar-barh-no-longer-accepts-left-bottom-as-first-named-argument" title="Permalink to this headline">¶</a></h3>
<p>These arguments were renamed in 2.0 to <code class="docutils literal notranslate"><span class="pre">x</span></code> / <code class="docutils literal notranslate"><span class="pre">y</span></code> following the change of the
default alignment from <code class="docutils literal notranslate"><span class="pre">edge</span></code> to <code class="docutils literal notranslate"><span class="pre">center</span></code>.</p>
</div>
<div class="section" id="different-exception-types-for-undocumented-options">
<h3>Different exception types for undocumented options<a class="headerlink" href="#different-exception-types-for-undocumented-options" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Passing <code class="docutils literal notranslate"><span class="pre">style='comma'</span></code> to <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.ticklabel_format.html#matplotlib.axes.Axes.ticklabel_format" title="matplotlib.axes.Axes.ticklabel_format"><code class="xref py py-meth docutils literal notranslate"><span class="pre">ticklabel_format()</span></code></a>
was never supported. It now raises <code class="docutils literal notranslate"><span class="pre">ValueError</span></code> like all other
unsupported styles, rather than <code class="docutils literal notranslate"><span class="pre">NotImplementedError</span></code>.</li>
<li>Passing the undocumented <code class="docutils literal notranslate"><span class="pre">xmin</span></code> or <code class="docutils literal notranslate"><span class="pre">xmax</span></code> arguments to
<a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_xlim.html#matplotlib.axes.Axes.set_xlim" title="matplotlib.axes.Axes.set_xlim"><code class="xref py py-meth docutils literal notranslate"><span class="pre">set_xlim()</span></code></a> would silently override the <code class="docutils literal notranslate"><span class="pre">left</span></code>
and <code class="docutils literal notranslate"><span class="pre">right</span></code> arguments. <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.set_ylim.html#matplotlib.axes.Axes.set_ylim" title="matplotlib.axes.Axes.set_ylim"><code class="xref py py-meth docutils literal notranslate"><span class="pre">set_ylim()</span></code></a> and the
3D equivalents (e.g. <code class="xref py py-meth docutils literal notranslate"><span class="pre">set_zlim3d()</span></code>) had a
corresponding problem.
The <code class="docutils literal notranslate"><span class="pre">_min</span></code> and <code class="docutils literal notranslate"><span class="pre">_max</span></code> arguments are now deprecated, and a <code class="docutils literal notranslate"><span class="pre">TypeError</span></code>
will be raised if they would override the earlier limit arguments.</li>
</ul>
</div>
<div class="section" id="improved-call-signature-for-axes-margins">
<h3>Improved call signature for <code class="docutils literal notranslate"><span class="pre">Axes.margins</span></code><a class="headerlink" href="#improved-call-signature-for-axes-margins" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.margins.html#matplotlib.axes.Axes.margins" title="matplotlib.axes.Axes.margins"><code class="xref py py-meth docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.margins()</span></code></a> and <code class="xref py py-meth docutils literal notranslate"><span class="pre">mpl_toolkits.mplot3d.Axes3D.margins()</span></code>
no longer accept arbitrary keywords. <code class="docutils literal notranslate"><span class="pre">TypeError</span></code> will therefore be raised
if unknown kwargs are passed; previously they would be silently ignored.</p>
<p>If too many positional arguments are passed, <code class="docutils literal notranslate"><span class="pre">TypeError</span></code> will be raised
instead of <code class="docutils literal notranslate"><span class="pre">ValueError</span></code>, for consistency with other call-signature violations.</p>
<p><code class="docutils literal notranslate"><span class="pre">Axes3D.margins</span></code> now raises <code class="docutils literal notranslate"><span class="pre">TypeError</span></code> instead of emitting a deprecation
warning if only two positional arguments are passed. To supply only <code class="docutils literal notranslate"><span class="pre">x</span></code> and
<code class="docutils literal notranslate"><span class="pre">y</span></code> margins, use keyword arguments.</p>
</div>
<div class="section" id="explicit-arguments-instead-of-args-kwargs">
<h3>Explicit arguments instead of *args, **kwargs<a class="headerlink" href="#explicit-arguments-instead-of-args-kwargs" title="Permalink to this headline">¶</a></h3>
<p><span class="target" id="index-0"></span><a class="pep reference external" href="https://www.python.org/dev/peps/pep-3102"><strong>PEP 3102</strong></a> describes keyword-only arguments, which allow Matplotlib
to provide explicit call signatures - where we previously used
<code class="docutils literal notranslate"><span class="pre">*args,</span> <span class="pre">**kwargs</span></code> and <code class="docutils literal notranslate"><span class="pre">kwargs.pop</span></code>, we can now expose named
arguments. In some places, unknown kwargs were previously ignored but
now raise <code class="docutils literal notranslate"><span class="pre">TypeError</span></code> because <code class="docutils literal notranslate"><span class="pre">**kwargs</span></code> has been removed.</p>
<ul class="simple">
<li><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.stem.html#matplotlib.axes.Axes.stem" title="matplotlib.axes.Axes.stem"><code class="xref py py-meth docutils literal notranslate"><span class="pre">matplotlib.axes.Axes.stem()</span></code></a> no longer accepts unknown keywords,
and raises <code class="docutils literal notranslate"><span class="pre">TypeError</span></code> instead of emitting a deprecation.</li>
<li><code class="xref py py-meth docutils literal notranslate"><span class="pre">matplotlib.axex.Axes.stem()</span></code> now raises TypeError when passed
unhandled positional arguments. If two or more arguments are passed
(ie X, Y, [linefmt], ...) and Y cannot be cast to an array, an error
will be raised instead of treating X as Y and Y as linefmt.</li>
<li><code class="xref py py-meth docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.axes_divider.SubPlotDivider()</span></code> raises
<code class="docutils literal notranslate"><span class="pre">TypeError</span></code> instead of <code class="docutils literal notranslate"><span class="pre">Exception</span></code> when passed unknown kwargs.</li>
</ul>
</div>
<div class="section" id="cleanup-decorators-and-test-classes-no-longer-destroy-warnings-filter-on-exit">
<h3>Cleanup decorators and test classes no longer destroy warnings filter on exit<a class="headerlink" href="#cleanup-decorators-and-test-classes-no-longer-destroy-warnings-filter-on-exit" title="Permalink to this headline">¶</a></h3>
<p>The decorators and classes in matplotlib.testing.decorators no longer
destroy the warnings filter on exit. Instead, they restore the warnings
filter that existed before the test started using <code class="docutils literal notranslate"><span class="pre">warnings.catch_warnings</span></code>.</p>
</div>
<div class="section" id="non-interactive-figuremanager-classes-are-now-aliases-of-figuremanagerbase">
<h3>Non-interactive FigureManager classes are now aliases of FigureManagerBase<a class="headerlink" href="#non-interactive-figuremanager-classes-are-now-aliases-of-figuremanagerbase" title="Permalink to this headline">¶</a></h3>
<p>The <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureManagerPdf</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureManagerPS</span></code>, and <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureManagerSVG</span></code> classes,
which were previously empty subclasses of <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureManagerBase</span></code> (i.e., not
adding or overriding any attribute or method), are now direct aliases for
<code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureManagerBase</span></code>.</p>
</div>
<div class="section" id="change-to-the-output-of-image-thumbnail">
<h3>Change to the output of <a class="reference internal" href="image_api.html#matplotlib.image.thumbnail" title="matplotlib.image.thumbnail"><code class="xref py py-obj docutils literal notranslate"><span class="pre">image.thumbnail</span></code></a><a class="headerlink" href="#change-to-the-output-of-image-thumbnail" title="Permalink to this headline">¶</a></h3>
<p>When called with <code class="docutils literal notranslate"><span class="pre">preview=False</span></code>, <a class="reference internal" href="image_api.html#matplotlib.image.thumbnail" title="matplotlib.image.thumbnail"><code class="xref py py-obj docutils literal notranslate"><span class="pre">image.thumbnail</span></code></a> previously returned an
figure whose canvas class was set according to the output file extension. It
now returns a figure whose canvas class is the base <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureCanvasBase</span></code> (and
relies on <code class="xref py py-obj docutils literal notranslate"><span class="pre">FigureCanvasBase.print_figure</span></code>) to handle the canvas switching
properly).</p>
<p>As a side effect of this change, <a class="reference internal" href="image_api.html#matplotlib.image.thumbnail" title="matplotlib.image.thumbnail"><code class="xref py py-obj docutils literal notranslate"><span class="pre">image.thumbnail</span></code></a> now also supports .ps, .eps,
and .svgz output.</p>
</div>
<div class="section" id="funcanimation-now-draws-artists-according-to-their-zorder-when-blitting">
<h3><a class="reference internal" href="_as_gen/matplotlib.animation.FuncAnimation.html#matplotlib.animation.FuncAnimation" title="matplotlib.animation.FuncAnimation"><code class="xref py py-obj docutils literal notranslate"><span class="pre">FuncAnimation</span></code></a> now draws artists according to their zorder when blitting<a class="headerlink" href="#funcanimation-now-draws-artists-according-to-their-zorder-when-blitting" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="_as_gen/matplotlib.animation.FuncAnimation.html#matplotlib.animation.FuncAnimation" title="matplotlib.animation.FuncAnimation"><code class="xref py py-obj docutils literal notranslate"><span class="pre">FuncAnimation</span></code></a> now draws artists returned by the user-
function according to their zorder when using blitting,
instead of using the order in which they are being passed.
However, note that only zorder of passed artists will be
respected, as they are drawn on top of any existing artists
(see <a class="reference external" href="https://github.com/matplotlib/matplotlib/issues/11369">#11369</a>).</p>
</div>
<div class="section" id="contour-color-autoscaling-improvements">
<h3>Contour color autoscaling improvements<a class="headerlink" href="#contour-color-autoscaling-improvements" title="Permalink to this headline">¶</a></h3>
<p>Selection of contour levels is now the same for contour and
contourf; previously, for contour, levels outside the data range were
deleted. (Exception: if no contour levels are found within the
data range, the <code class="xref py py-obj docutils literal notranslate"><span class="pre">levels</span></code> attribute is replaced with a list holding
only the minimum of the data range.)</p>
<p>When contour is called with levels specified as a target number rather
than a list, and the 'extend' kwarg is used, the levels are now chosen
such that some data typically will fall in the extended range.</p>
<p>When contour is called with a <code class="xref py py-obj docutils literal notranslate"><span class="pre">LogNorm</span></code> or a <code class="xref py py-obj docutils literal notranslate"><span class="pre">LogLocator</span></code>, it will now
select colors using the geometric mean rather than the arithmetic mean
of the contour levels.</p>
</div>
<div class="section" id="streamplot-last-row-and-column-fixed">
<h3>Streamplot last row and column fixed<a class="headerlink" href="#streamplot-last-row-and-column-fixed" title="Permalink to this headline">¶</a></h3>
<p>A bug was fixed where the last row and column of data in
<code class="xref py py-obj docutils literal notranslate"><span class="pre">streamplot</span></code> were being dropped.</p>
</div>
<div class="section" id="changed-default-autodatelocator-kwarg-interval-multiples-to-true">
<h3>Changed default <code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoDateLocator</span></code> kwarg <em>interval_multiples</em> to <code class="docutils literal notranslate"><span class="pre">True</span></code><a class="headerlink" href="#changed-default-autodatelocator-kwarg-interval-multiples-to-true" title="Permalink to this headline">¶</a></h3>
<p>The default value of the tick locator for dates, <a class="reference internal" href="dates_api.html#matplotlib.dates.AutoDateLocator" title="matplotlib.dates.AutoDateLocator"><code class="xref py py-obj docutils literal notranslate"><span class="pre">dates.AutoDateLocator</span></code></a>
kwarg <em>interval_multiples</em> was set to <code class="docutils literal notranslate"><span class="pre">False</span></code> which leads to not-nice
looking automatic ticks in many instances. The much nicer
<code class="docutils literal notranslate"><span class="pre">interval_multiples=True</span></code> is the new default. See below to get the
old behavior back:</p>
<blockquote>
<div><p>(<a class="reference external" href="../api/api_changes-1.py">Source code</a>, <a class="reference external" href="../api/api_changes-1.png">png</a>, <a class="reference external" href="../api/api_changes-1.pdf">pdf</a>)</p>
<div class="figure">
<img alt="../_images/api_changes-1.png" src="../_images/api_changes-1.png" />
</div>
</div></blockquote>
</div>
<div class="section" id="axes-get-position-now-returns-actual-position-if-aspect-changed">
<h3><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_position.html#matplotlib.axes.Axes.get_position" title="matplotlib.axes.Axes.get_position"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.get_position</span></code></a> now returns actual position if aspect changed<a class="headerlink" href="#axes-get-position-now-returns-actual-position-if-aspect-changed" title="Permalink to this headline">¶</a></h3>
<p><a class="reference internal" href="_as_gen/matplotlib.axes.Axes.get_position.html#matplotlib.axes.Axes.get_position" title="matplotlib.axes.Axes.get_position"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.get_position</span></code></a> used to return the original position unless a
draw had been triggered or <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.apply_aspect.html#matplotlib.axes.Axes.apply_aspect" title="matplotlib.axes.Axes.apply_aspect"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.apply_aspect</span></code></a> had been called, even
if the kwarg <em>original</em> was set to <code class="docutils literal notranslate"><span class="pre">False</span></code>. Now <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.apply_aspect.html#matplotlib.axes.Axes.apply_aspect" title="matplotlib.axes.Axes.apply_aspect"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes.apply_aspect</span></code></a>
is called so <code class="docutils literal notranslate"><span class="pre">ax.get_position()</span></code> will return the new modified position.
To get the old behavior use <code class="docutils literal notranslate"><span class="pre">ax.get_position(original=True)</span></code>.</p>
</div>
<div class="section" id="the-ticks-for-colorbar-now-adjust-for-the-size-of-the-colorbar">
<h3>The ticks for colorbar now adjust for the size of the colorbar<a class="headerlink" href="#the-ticks-for-colorbar-now-adjust-for-the-size-of-the-colorbar" title="Permalink to this headline">¶</a></h3>
<p>Colorbar ticks now adjust for the size of the colorbar if the
colorbar is made from a mappable that is not a contour or
doesn't have a BoundaryNorm, or boundaries are not specified.
If boundaries, etc are specified, the colorbar maintains the
original behavior.</p>
</div>
<div class="section" id="colorbar-for-log-scaled-hexbin">
<h3>Colorbar for log-scaled hexbin<a class="headerlink" href="#colorbar-for-log-scaled-hexbin" title="Permalink to this headline">¶</a></h3>
<p>When using <code class="xref py py-obj docutils literal notranslate"><span class="pre">hexbin</span></code> and plotting with a logarithmic color scale, the colorbar
ticks are now correctly log scaled. Previously the tick values were linear
scaled log(number of counts).</p>
</div>
<div class="section" id="pgf-backend-now-explicitly-makes-black-text-black">
<h3>PGF backend now explicitly makes black text black<a class="headerlink" href="#pgf-backend-now-explicitly-makes-black-text-black" title="Permalink to this headline">¶</a></h3>
<p>Previous behavior with the pgf backend was for text specified as black to
actually be the default color of whatever was rendering the pgf file (which was
of course usually black). The new behavior is that black text is black,
regardless of the default color. However, this means that there is no way to
fall back on the default color of the renderer.</p>
</div>
<div class="section" id="blacklisted-rcparams-no-longer-updated-by-rcdefaults-rc-file-defaults-rc-file">
<h3>Blacklisted rcparams no longer updated by <code class="xref py py-obj docutils literal notranslate"><span class="pre">rcdefaults</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">rc_file_defaults</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">rc_file</span></code><a class="headerlink" href="#blacklisted-rcparams-no-longer-updated-by-rcdefaults-rc-file-defaults-rc-file" title="Permalink to this headline">¶</a></h3>
<p>The rc modifier functions <code class="xref py py-obj docutils literal notranslate"><span class="pre">rcdefaults</span></code>, <code class="xref py py-obj docutils literal notranslate"><span class="pre">rc_file_defaults</span></code> and <code class="xref py py-obj docutils literal notranslate"><span class="pre">rc_file</span></code>
now ignore rcParams in the <code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.style.core.STYLE_BLACKLIST</span></code> set. In
particular, this prevents the <code class="docutils literal notranslate"><span class="pre">backend</span></code> and <code class="docutils literal notranslate"><span class="pre">interactive</span></code> rcParams from
being incorrectly modified by these functions.</p>
</div>
<div class="section" id="callbackregistry-now-stores-callbacks-using-stdlib-s-weakmethods">
<h3><code class="xref py py-obj docutils literal notranslate"><span class="pre">CallbackRegistry</span></code> now stores callbacks using stdlib's <code class="xref py py-obj docutils literal notranslate"><span class="pre">WeakMethod</span></code>s<a class="headerlink" href="#callbackregistry-now-stores-callbacks-using-stdlib-s-weakmethods" title="Permalink to this headline">¶</a></h3>
<p>In particular, this implies that <code class="docutils literal notranslate"><span class="pre">CallbackRegistry.callbacks[signal]</span></code> is now
a mapping of callback ids to <code class="xref py py-obj docutils literal notranslate"><span class="pre">WeakMethod</span></code>s (i.e., they need to be first called
with no arguments to retrieve the method itself).</p>
</div>
<div class="section" id="changes-regarding-the-text-latex-unicode-rcparam">
<h3>Changes regarding the text.latex.unicode rcParam<a class="headerlink" href="#changes-regarding-the-text-latex-unicode-rcparam" title="Permalink to this headline">¶</a></h3>
<p>The rcParam now defaults to True and is deprecated (i.e., in future versions
of Maplotlib, unicode input will always be supported).</p>
<p>Moreover, the underlying implementation now uses <code class="docutils literal notranslate"><span class="pre">\usepackage[utf8]{inputenc}</span></code>
instead of <code class="docutils literal notranslate"><span class="pre">\usepackage{ucs}\usepackage[utf8x]{inputenc}</span></code>.</p>
</div>
<div class="section" id="return-type-of-artistinspector-get-aliases-changed">
<h3>Return type of ArtistInspector.get_aliases changed<a class="headerlink" href="#return-type-of-artistinspector-get-aliases-changed" title="Permalink to this headline">¶</a></h3>
<p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ArtistInspector.get_aliases</span></code> previously returned the set of aliases as
<code class="docutils literal notranslate"><span class="pre">{fullname:</span> <span class="pre">{alias1:</span> <span class="pre">None,</span> <span class="pre">alias2:</span> <span class="pre">None,</span> <span class="pre">...}}</span></code>. The dict-to-None mapping
was used to simulate a set in earlier versions of Python. It has now been
replaced by a set, i.e. <code class="docutils literal notranslate"><span class="pre">{fullname:</span> <span class="pre">{alias1,</span> <span class="pre">alias2,</span> <span class="pre">...}}</span></code>.</p>
<p>This value is also stored in <code class="xref py py-obj docutils literal notranslate"><span class="pre">ArtistInspector.aliasd</span></code>, which has likewise
changed.</p>
</div>
<div class="section" id="removed-pytz-as-a-dependency">
<h3>Removed <code class="docutils literal notranslate"><span class="pre">pytz</span></code> as a dependency<a class="headerlink" href="#removed-pytz-as-a-dependency" title="Permalink to this headline">¶</a></h3>
<p>Since <code class="docutils literal notranslate"><span class="pre">dateutil</span></code> and <code class="docutils literal notranslate"><span class="pre">pytz</span></code> both provide time zones, and
matplotlib already depends on <code class="docutils literal notranslate"><span class="pre">dateutil</span></code>, matplotlib will now use
<code class="docutils literal notranslate"><span class="pre">dateutil</span></code> time zones internally and drop the redundant dependency
on <code class="docutils literal notranslate"><span class="pre">pytz</span></code>. While <code class="docutils literal notranslate"><span class="pre">dateutil</span></code> time zones are preferred (and
currently recommended in the Python documentation), the explicit use
of <code class="docutils literal notranslate"><span class="pre">pytz</span></code> zones is still supported.</p>
</div>
<div class="section" id="deprecations">
<h3>Deprecations<a class="headerlink" href="#deprecations" title="Permalink to this headline">¶</a></h3>
<div class="section" id="modules">
<h4>Modules<a class="headerlink" href="#modules" title="Permalink to this headline">¶</a></h4>
<p>The following modules are deprecated:</p>
<ul class="simple">
<li><code class="xref py py-mod docutils literal notranslate"><span class="pre">matplotlib.compat.subprocess</span></code>. This was a python 2 workaround, but all
the functionality can now be found in the python 3 standard library
<a class="reference external" href="https://docs.python.org/3/library/subprocess.html#module-subprocess" title="(in Python v3.7)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">subprocess</span></code></a>.</li>
<li><code class="xref py py-mod docutils literal notranslate"><span class="pre">matplotlib.backends.wx_compat</span></code>. Python 3 is only compatible with
wxPython 4, so support for wxPython 3 or earlier can be dropped.</li>
</ul>
</div>
<div class="section" id="classes-methods-functions-and-attributes">
<h4>Classes, methods, functions, and attributes<a class="headerlink" href="#classes-methods-functions-and-attributes" title="Permalink to this headline">¶</a></h4>
<p>The following classes, methods, functions, and attributes are deprecated:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">RcParams.msg_depr</span></code>, <code class="docutils literal notranslate"><span class="pre">RcParams.msg_depr_ignore</span></code>,
<code class="docutils literal notranslate"><span class="pre">RcParams.msg_depr_set</span></code>, <code class="docutils literal notranslate"><span class="pre">RcParams.msg_obsolete</span></code>,
<code class="docutils literal notranslate"><span class="pre">RcParams.msg_backend_obsolete</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">afm.parse_afm</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_pdf.PdfFile.texFontMap</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_pgf.get_texcommand</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_ps.get_bbox</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_qt5.FigureCanvasQT.keyAutoRepeat</span></code> (directly check
<code class="docutils literal notranslate"><span class="pre">event.guiEvent.isAutoRepeat()</span></code> in the event handler to decide whether to
handle autorepeated key presses).</li>
<li><code class="docutils literal notranslate"><span class="pre">backend_qt5.error_msg_qt</span></code>, <code class="docutils literal notranslate"><span class="pre">backend_qt5.exception_handler</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_wx.FigureCanvasWx.macros</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backends.pylab_setup</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">cbook.GetRealpathAndStat</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.Locked</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">cbook.is_numlike</span></code> (use <code class="docutils literal notranslate"><span class="pre">isinstance(...,</span> <span class="pre">numbers.Number)</span></code> instead),
<code class="docutils literal notranslate"><span class="pre">cbook.listFiles</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.unicode_safe</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">container.Container.set_remove_method</span></code>,</li>
<li><code class="docutils literal notranslate"><span class="pre">contour.ContourLabeler.cl</span></code>, <code class="docutils literal notranslate"><span class="pre">.cl_xy</span></code>, and <code class="docutils literal notranslate"><span class="pre">.cl_cvalues</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">dates.DateFormatter.strftime_pre_1900</span></code>, <code class="docutils literal notranslate"><span class="pre">dates.DateFormatter.strftime</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">font_manager.TempCache</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">image._ImageBase.iterpnames</span></code>, use the <code class="docutils literal notranslate"><span class="pre">interpolation_names</span></code> property
instead. (this affects classes that inherit from <code class="docutils literal notranslate"><span class="pre">_ImageBase</span></code> including
<code class="xref py py-class docutils literal notranslate"><span class="pre">FigureImage</span></code>, <code class="xref py py-class docutils literal notranslate"><span class="pre">BboxImage</span></code>, and <code class="xref py py-class docutils literal notranslate"><span class="pre">AxesImage</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">mathtext.unichr_safe</span></code> (use <code class="docutils literal notranslate"><span class="pre">chr</span></code> instead)</li>
<li><code class="docutils literal notranslate"><span class="pre">patches.Polygon.xy</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">table.Table.get_child_artists</span></code> (use <code class="docutils literal notranslate"><span class="pre">get_children</span></code> instead)</li>
<li><code class="docutils literal notranslate"><span class="pre">testing.compare.ImageComparisonTest</span></code>, <code class="docutils literal notranslate"><span class="pre">testing.compare.compare_float</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">testing.decorators.CleanupTest</span></code>,
<code class="docutils literal notranslate"><span class="pre">testing.decorators.skip_if_command_unavailable</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasQT.keyAutoRepeat</span></code> (directly check
<code class="docutils literal notranslate"><span class="pre">event.guiEvent.isAutoRepeat()</span></code> in the event handler to decide whether to
handle autorepeated key presses)</li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasWx.macros</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">_ImageBase.iterpnames</span></code>, use the <code class="docutils literal notranslate"><span class="pre">interpolation_names</span></code> property instead.
(this affects classes that inherit from <code class="docutils literal notranslate"><span class="pre">_ImageBase</span></code> including
<code class="xref py py-class docutils literal notranslate"><span class="pre">FigureImage</span></code>, <code class="xref py py-class docutils literal notranslate"><span class="pre">BboxImage</span></code>, and <code class="xref py py-class docutils literal notranslate"><span class="pre">AxesImage</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">patches.Polygon.xy</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">texmanager.dvipng_hack_alpha</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">text.Annotation.arrow</span></code></li>
<li><dl class="first docutils">
<dt><a class="reference internal" href="legend_api.html#matplotlib.legend.Legend.draggable" title="matplotlib.legend.Legend.draggable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Legend.draggable()</span></code></a>, in favor of <a class="reference internal" href="legend_api.html#matplotlib.legend.Legend.set_draggable" title="matplotlib.legend.Legend.set_draggable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Legend.set_draggable()</span></code></a></dt>
<dd>(<code class="docutils literal notranslate"><span class="pre">Legend.draggable</span></code> may be reintroduced as a property in future releases)</dd>
</dl>
</li>
<li><code class="docutils literal notranslate"><span class="pre">textpath.TextToPath.tex_font_map</span></code></li>
<li><code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.cbook.deprecation.mplDeprecation</span></code> will be removed
in future versions. It is just an alias for
<code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.cbook.deprecation.MatplotlibDeprecationWarning</span></code>.
Please use the
<code class="xref py py-class docutils literal notranslate"><span class="pre">MatplotlibDeprecationWarning</span></code> directly if
neccessary.</li>
<li>The <code class="docutils literal notranslate"><span class="pre">matplotlib.cbook.Bunch</span></code> class has been deprecated. Instead, use
<a class="reference external" href="https://docs.python.org/3/library/types.html#types.SimpleNamespace" title="(in Python v3.7)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">types.SimpleNamespace</span></code></a> from the standard library which provides the same
functionality.</li>
<li><code class="docutils literal notranslate"><span class="pre">Axes.mouseover_set</span></code> is now a frozenset, and deprecated. Directly
manipulate the artist's <code class="docutils literal notranslate"><span class="pre">.mouseover</span></code> attribute to change their mouseover
status.</li>
</ul>
<p>The following keyword arguments are deprecated:</p>
<ul class="simple">
<li>passing <code class="docutils literal notranslate"><span class="pre">verts</span></code> to <code class="docutils literal notranslate"><span class="pre">Axes.scatter</span></code> (use <code class="docutils literal notranslate"><span class="pre">marker</span></code> instead)</li>
<li>passing <code class="docutils literal notranslate"><span class="pre">obj_type</span></code> to <code class="docutils literal notranslate"><span class="pre">cbook.deprecated</span></code></li>
</ul>
<p>The following call signatures are deprecated:</p>
<ul class="simple">
<li>passing a <code class="docutils literal notranslate"><span class="pre">wx.EvtHandler</span></code> as first argument to <code class="docutils literal notranslate"><span class="pre">backend_wx.TimerWx</span></code></li>
</ul>
</div>
<div class="section" id="rcparams">
<h4>rcParams<a class="headerlink" href="#rcparams" title="Permalink to this headline">¶</a></h4>
<p>The following rcParams are deprecated:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">examples.directory</span></code> (use <code class="docutils literal notranslate"><span class="pre">datapath</span></code> instead)</li>
<li><code class="docutils literal notranslate"><span class="pre">pgf.debug</span></code> (the pgf backend relies on logging)</li>
<li><code class="docutils literal notranslate"><span class="pre">text.latex.unicode</span></code> (always True now)</li>
</ul>
</div>
<div class="section" id="marker-styles">
<h4>marker styles<a class="headerlink" href="#marker-styles" title="Permalink to this headline">¶</a></h4>
<ul class="simple">
<li>Using <code class="docutils literal notranslate"><span class="pre">(n,</span> <span class="pre">3)</span></code> as marker style to specify a circle marker is deprecated. Use
<code class="docutils literal notranslate"><span class="pre">"o"</span></code> instead.</li>
<li>Using <code class="docutils literal notranslate"><span class="pre">([(x0,</span> <span class="pre">y0),</span> <span class="pre">(x1,</span> <span class="pre">y1),</span> <span class="pre">...],</span> <span class="pre">0)</span></code> as marker style to specify a custom
marker path is deprecated. Use <code class="docutils literal notranslate"><span class="pre">[(x0,</span> <span class="pre">y0),</span> <span class="pre">(x1,</span> <span class="pre">y1),</span> <span class="pre">...]</span></code> instead.</li>
</ul>
</div>
<div class="section" id="deprecation-of-locatableaxes-in-toolkits">
<h4>Deprecation of <code class="docutils literal notranslate"><span class="pre">LocatableAxes</span></code> in toolkits<a class="headerlink" href="#deprecation-of-locatableaxes-in-toolkits" title="Permalink to this headline">¶</a></h4>
<p>The <code class="docutils literal notranslate"><span class="pre">LocatableAxes</span></code> classes in toolkits have been deprecated. The base <code class="xref py py-obj docutils literal notranslate"><span class="pre">Axes</span></code>
classes provide the same functionality to all subclasses, thus these mixins are
no longer necessary. Related functions have also been deprecated. Specifically:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.axes_divider.LocatableAxesBase</span></code>: no specific
replacement; use any other <code class="docutils literal notranslate"><span class="pre">Axes</span></code>-derived class directly instead.</li>
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.axes_divider.locatable_axes_factory</span></code>: no specific
replacement; use any other <code class="docutils literal notranslate"><span class="pre">Axes</span></code>-derived class directly instead.</li>
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.axes_divider.Axes</span></code>: use
<a class="reference internal" href="_as_gen/mpl_toolkits.axes_grid1.mpl_axes.Axes.html#mpl_toolkits.axes_grid1.mpl_axes.Axes" title="mpl_toolkits.axes_grid1.mpl_axes.Axes"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.mpl_axes.Axes</span></code></a> directly.</li>
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.axes_divider.LocatableAxes</span></code>: use
<a class="reference internal" href="_as_gen/mpl_toolkits.axes_grid1.mpl_axes.Axes.html#mpl_toolkits.axes_grid1.mpl_axes.Axes" title="mpl_toolkits.axes_grid1.mpl_axes.Axes"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mpl_toolkits.axes_grid1.mpl_axes.Axes</span></code></a> directly.</li>
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axisartist.axes_divider.Axes</span></code>: use
<a class="reference internal" href="_as_gen/mpl_toolkits.axisartist.axislines.Axes.html#mpl_toolkits.axisartist.axislines.Axes" title="mpl_toolkits.axisartist.axislines.Axes"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mpl_toolkits.axisartist.axislines.Axes</span></code></a> directly.</li>
<li><code class="docutils literal notranslate"><span class="pre">mpl_toolkits.axisartist.axes_divider.LocatableAxes</span></code>: use
<a class="reference internal" href="_as_gen/mpl_toolkits.axisartist.axislines.Axes.html#mpl_toolkits.axisartist.axislines.Axes" title="mpl_toolkits.axisartist.axislines.Axes"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mpl_toolkits.axisartist.axislines.Axes</span></code></a> directly.</li>
</ul>
</div>
</div>
<div class="section" id="removals">
<h3>Removals<a class="headerlink" href="#removals" title="Permalink to this headline">¶</a></h3>
<div class="section" id="hold-machinery">
<h4>Hold machinery<a class="headerlink" href="#hold-machinery" title="Permalink to this headline">¶</a></h4>
<p>Setting or unsetting <code class="docutils literal notranslate"><span class="pre">hold</span></code> (deprecated in version 2.1) has now
been completely removed. Matplotlib now always behaves as if <code class="docutils literal notranslate"><span class="pre">hold=True</span></code>.
To clear an axes you can manually use <a class="reference internal" href="_as_gen/matplotlib.axes.Axes.cla.html#matplotlib.axes.Axes.cla" title="matplotlib.axes.Axes.cla"><code class="xref py py-meth docutils literal notranslate"><span class="pre">cla()</span></code></a>,
or to clear an entire figure use <a class="reference internal" href="_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.clf" title="matplotlib.figure.Figure.clf"><code class="xref py py-meth docutils literal notranslate"><span class="pre">clf()</span></code></a>.</p>
</div>
<div class="section" id="removal-of-deprecated-backends">
<h4>Removal of deprecated backends<a class="headerlink" href="#removal-of-deprecated-backends" title="Permalink to this headline">¶</a></h4>
<p>Deprecated backends have been removed:</p>
<ul class="simple">
<li>GTKAgg</li>
<li>GTKCairo</li>
<li>GTK</li>
<li>GDK</li>
</ul>
</div>
<div class="section" id="deprecated-apis">
<h4>Deprecated APIs<a class="headerlink" href="#deprecated-apis" title="Permalink to this headline">¶</a></h4>
<p>The following deprecated API elements have been removed:</p>
<ul class="simple">
<li>The deprecated methods <code class="docutils literal notranslate"><span class="pre">knownfailureif</span></code> and <code class="docutils literal notranslate"><span class="pre">remove_text</span></code> have been removed
from <code class="xref py py-mod docutils literal notranslate"><span class="pre">matplotlib.testing.decorators</span></code>.</li>
<li>The entire contents of <code class="docutils literal notranslate"><span class="pre">testing.noseclasses</span></code> have also been removed.</li>
<li><code class="docutils literal notranslate"><span class="pre">matplotlib.checkdep_tex</span></code>, <code class="docutils literal notranslate"><span class="pre">matplotlib.checkdep_xmllint</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">backend_bases.IdleEvent</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">cbook.converter</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.tostr</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.todatetime</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.todate</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.tofloat</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.toint</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.unique</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.is_string_like</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.is_sequence_of_strings</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.is_scalar</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.soundex</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.dict_delall</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.get_split_ind</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.wrap</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.get_recursive_filelist</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.pieces</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.exception_to_str</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.allequal</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.alltrue</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.onetrue</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.allpairs</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.finddir</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.reverse_dict</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.restrict_dict</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.issubclass_safe</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.recursive_remove</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.unmasked_index_ranges</span></code>,
<code class="docutils literal notranslate"><span class="pre">cbook.Null</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.RingBuffer</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.Sorter</span></code>, <code class="docutils literal notranslate"><span class="pre">cbook.Xlator</span></code>,</li>
<li><code class="docutils literal notranslate"><span class="pre">font_manager.weight_as_number</span></code>, <code class="docutils literal notranslate"><span class="pre">font_manager.ttfdict_to_fnames</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">pyplot.colors</span></code>, <code class="docutils literal notranslate"><span class="pre">pyplot.spectral</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">rcsetup.validate_negative_linestyle</span></code>,
<code class="docutils literal notranslate"><span class="pre">rcsetup.validate_negative_linestyle_legacy</span></code>,</li>
<li><code class="docutils literal notranslate"><span class="pre">testing.compare.verifiers</span></code>, <code class="docutils literal notranslate"><span class="pre">testing.compare.verify</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">testing.decorators.knownfailureif</span></code>,
<code class="docutils literal notranslate"><span class="pre">testing.decorators.ImageComparisonTest.remove_text</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">tests.assert_str_equal</span></code>, <code class="docutils literal notranslate"><span class="pre">tests.test_tinypages.file_same</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">texmanager.dvipng_hack_alpha</span></code>,</li>
<li><code class="docutils literal notranslate"><span class="pre">_AxesBase.axesPatch</span></code>, <code class="docutils literal notranslate"><span class="pre">_AxesBase.set_color_cycle</span></code>,
<code class="docutils literal notranslate"><span class="pre">_AxesBase.get_cursor_props</span></code>, <code class="docutils literal notranslate"><span class="pre">_AxesBase.set_cursor_props</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">_ImageBase.iterpnames</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.start_event_loop_default</span></code>;</li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.stop_event_loop_default</span></code>;</li>
<li><code class="docutils literal notranslate"><span class="pre">Figure.figurePatch</span></code>,</li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.dynamic_update</span></code>, <code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.idle_event</span></code>,
<code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.get_linestyle</span></code>, <code class="docutils literal notranslate"><span class="pre">FigureCanvasBase.set_linestyle</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasQTAggBase</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasQTAgg.blitbox</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">FigureCanvasTk.show</span></code> (alternative: <code class="docutils literal notranslate"><span class="pre">FigureCanvasTk.draw</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">FigureManagerTkAgg</span></code> (alternative: <code class="docutils literal notranslate"><span class="pre">FigureManagerTk</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">NavigationToolbar2TkAgg</span></code> (alternative: <code class="docutils literal notranslate"><span class="pre">NavigationToolbar2Tk</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">backend_wxagg.Toolbar</span></code> (alternative: <code class="docutils literal notranslate"><span class="pre">backend_wxagg.NavigationToolbar2WxAgg</span></code>)</li>
<li><code class="docutils literal notranslate"><span class="pre">RendererAgg.debug()</span></code></li>
<li>passing non-numbers to <code class="docutils literal notranslate"><span class="pre">EngFormatter.format_eng</span></code></li>
<li>passing <code class="docutils literal notranslate"><span class="pre">frac</span></code> to <code class="docutils literal notranslate"><span class="pre">PolarAxes.set_theta_grids</span></code></li>
<li>any mention of idle events</li>
</ul>
<p>The following API elements have been removed:</p>
<ul class="simple">
<li><code class="docutils literal notranslate"><span class="pre">backend_cairo.HAS_CAIRO_CFFI</span></code></li>
<li><code class="docutils literal notranslate"><span class="pre">sphinxext.sphinx_version</span></code></li>
</ul>
</div>
<div class="section" id="proprietary-sphinx-directives">
<h4>Proprietary sphinx directives<a class="headerlink" href="#proprietary-sphinx-directives" title="Permalink to this headline">¶</a></h4>
<p>The matplotlib documentation used the proprietary sphinx directives
<code class="xref py py-obj docutils literal notranslate"> <span class="pre">htmlonly::</span></code>, and <code class="xref py py-obj docutils literal notranslate"> <span class="pre">latexonly::</span></code>. These have been replaced with the
standard sphinx directives <code class="xref py py-obj docutils literal notranslate"> <span class="pre">only::</span> <span class="pre">html</span></code> and <code class="xref py py-obj docutils literal notranslate"> <span class="pre">only::</span> <span class="pre">latex</span></code>. This
change will not affect any users. Only downstream package maintainers, who
have used the proprietary directives in their docs, will have to switch to the
sphinx directives.</p>
</div>
<div class="section" id="lib-mpl-examples-symlink">
<h4>lib/mpl_examples symlink<a class="headerlink" href="#lib-mpl-examples-symlink" title="Permalink to this headline">¶</a></h4>
<p>The symlink from lib/mpl_examples to ../examples has been removed.
This is not installed as an importable package and should not affect
end users, however this may require down-stream packagers to adjust.
The content is still available top-level examples directory.</p>
</div>
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© Copyright 2002 - 2012 John Hunter, Darren Dale, Eric Firing, Michael Droettboom and the Matplotlib development team; 2012 - 2018 The Matplotlib development team.
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Last updated on Nov 11, 2018.
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