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<section class="sphx-glr-example-title" id="libsvm-gui">
<span id="sphx-glr-auto-examples-applications-svm-gui-py"></span><h1>Libsvm GUI<a class="headerlink" href="#libsvm-gui" title="Link to this heading">¶</a></h1>
<p>A simple graphical frontend for Libsvm mainly intended for didactic
purposes. You can create data points by point and click and visualize
the decision region induced by different kernels and parameter settings.</p>
<p>To create positive examples click the left mouse button; to create
negative examples click the right button.</p>
<p>If all examples are from the same class, it uses a one-class SVM.</p>
<div class="highlight-Python notranslate"><div class="highlight"><pre><span></span><span class="c1"># Author: Peter Prettenhoer <[email protected]></span>
<span class="c1">#</span>
<span class="c1"># License: BSD 3 clause</span>
<span class="kn">import</span> <span class="nn">matplotlib</span>
<a href="https://matplotlib.org/stable/api/matplotlib_configuration_api.html#matplotlib.use" title="matplotlib.use" class="sphx-glr-backref-module-matplotlib sphx-glr-backref-type-py-function"><span class="n">matplotlib</span><span class="o">.</span><span class="n">use</span></a><span class="p">(</span><span class="s2">"TkAgg"</span><span class="p">)</span>
<span class="kn">from</span> <span class="nn">matplotlib.backends.backend_tkagg</span> <span class="kn">import</span> <a href="https://matplotlib.org/stable/api/backend_tk_api.html#matplotlib.backends.backend_tkagg.FigureCanvasTkAgg" title="matplotlib.backends.backend_tkagg.FigureCanvasTkAgg" class="sphx-glr-backref-module-matplotlib-backends-backend_tkagg sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">FigureCanvasTkAgg</span></a>
<span class="k">try</span><span class="p">:</span>
<span class="kn">from</span> <span class="nn">matplotlib.backends.backend_tkagg</span> <span class="kn">import</span> <span class="n">NavigationToolbar2Tk</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
<span class="c1"># NavigationToolbar2TkAgg was deprecated in matplotlib 2.2</span>
<span class="kn">from</span> <span class="nn">matplotlib.backends.backend_tkagg</span> <span class="kn">import</span> <span class="p">(</span>
<span class="n">NavigationToolbar2TkAgg</span> <span class="k">as</span> <span class="n">NavigationToolbar2Tk</span><span class="p">,</span>
<span class="p">)</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">tkinter</span> <span class="k">as</span> <span class="nn">Tk</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="kn">from</span> <span class="nn">matplotlib.contour</span> <span class="kn">import</span> <a href="https://matplotlib.org/stable/api/contour_api.html#matplotlib.contour.ContourSet" title="matplotlib.contour.ContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">ContourSet</span></a>
<span class="kn">from</span> <span class="nn">matplotlib.figure</span> <span class="kn">import</span> <a href="https://matplotlib.org/stable/api/figure_api.html#matplotlib.figure.Figure" title="matplotlib.figure.Figure" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Figure</span></a>
<span class="kn">from</span> <span class="nn">sklearn</span> <span class="kn">import</span> <span class="n">svm</span>
<span class="kn">from</span> <span class="nn">sklearn.datasets</span> <span class="kn">import</span> <a href="../../modules/generated/sklearn.datasets.dump_svmlight_file.html#sklearn.datasets.dump_svmlight_file" title="sklearn.datasets.dump_svmlight_file" class="sphx-glr-backref-module-sklearn-datasets sphx-glr-backref-type-py-function"><span class="n">dump_svmlight_file</span></a>
<span class="n">y_min</span><span class="p">,</span> <span class="n">y_max</span> <span class="o">=</span> <span class="o">-</span><span class="mi">50</span><span class="p">,</span> <span class="mi">50</span>
<span class="n">x_min</span><span class="p">,</span> <span class="n">x_max</span> <span class="o">=</span> <span class="o">-</span><span class="mi">50</span><span class="p">,</span> <span class="mi">50</span>
<span class="k">class</span> <span class="nc">Model</span><span class="p">:</span>
<span class="w"> </span><span class="sd">"""The Model which hold the data. It implements the</span>
<span class="sd"> observable in the observer pattern and notifies the</span>
<span class="sd"> registered observers on change event.</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">observers</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cls</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface_type</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">def</span> <span class="nf">changed</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Notify the observers."""</span>
<span class="k">for</span> <span class="n">observer</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">observers</span><span class="p">:</span>
<span class="n">observer</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">event</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">add_observer</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">observer</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Register an observer."""</span>
<span class="bp">self</span><span class="o">.</span><span class="n">observers</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">observer</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">set_surface</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">surface</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface</span> <span class="o">=</span> <span class="n">surface</span>
<span class="k">def</span> <span class="nf">dump_svmlight_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">file</span><span class="p">):</span>
<span class="n">data</span> <span class="o">=</span> <a href="https://numpy.org/doc/stable/reference/generated/numpy.array.html#numpy.array" title="numpy.array" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">array</span></a><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
<span class="n">X</span> <span class="o">=</span> <span class="n">data</span><span class="p">[:,</span> <span class="mi">0</span><span class="p">:</span><span class="mi">2</span><span class="p">]</span>
<span class="n">y</span> <span class="o">=</span> <span class="n">data</span><span class="p">[:,</span> <span class="mi">2</span><span class="p">]</span>
<a href="../../modules/generated/sklearn.datasets.dump_svmlight_file.html#sklearn.datasets.dump_svmlight_file" title="sklearn.datasets.dump_svmlight_file" class="sphx-glr-backref-module-sklearn-datasets sphx-glr-backref-type-py-function"><span class="n">dump_svmlight_file</span></a><span class="p">(</span><span class="n">X</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">file</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">Controller</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">model</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span> <span class="o">=</span> <span class="n">model</span>
<span class="bp">self</span><span class="o">.</span><span class="n">kernel</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">IntVar</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface_type</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">IntVar</span><span class="p">()</span>
<span class="c1"># Whether or not a model has been fitted</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fitted</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">fit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"fit the model"</span><span class="p">)</span>
<span class="n">train</span> <span class="o">=</span> <a href="https://numpy.org/doc/stable/reference/generated/numpy.array.html#numpy.array" title="numpy.array" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">array</span></a><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
<span class="n">X</span> <span class="o">=</span> <span class="n">train</span><span class="p">[:,</span> <span class="mi">0</span><span class="p">:</span><span class="mi">2</span><span class="p">]</span>
<span class="n">y</span> <span class="o">=</span> <span class="n">train</span><span class="p">[:,</span> <span class="mi">2</span><span class="p">]</span>
<span class="n">C</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">complexity</span><span class="o">.</span><span class="n">get</span><span class="p">())</span>
<span class="n">gamma</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gamma</span><span class="o">.</span><span class="n">get</span><span class="p">())</span>
<span class="n">coef0</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">coef0</span><span class="o">.</span><span class="n">get</span><span class="p">())</span>
<span class="n">degree</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">degree</span><span class="o">.</span><span class="n">get</span><span class="p">())</span>
<span class="n">kernel_map</span> <span class="o">=</span> <span class="p">{</span><span class="mi">0</span><span class="p">:</span> <span class="s2">"linear"</span><span class="p">,</span> <span class="mi">1</span><span class="p">:</span> <span class="s2">"rbf"</span><span class="p">,</span> <span class="mi">2</span><span class="p">:</span> <span class="s2">"poly"</span><span class="p">}</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><a href="https://numpy.org/doc/stable/reference/generated/numpy.unique.html#numpy.unique" title="numpy.unique" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">unique</span></a><span class="p">(</span><span class="n">y</span><span class="p">))</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">clf</span> <span class="o">=</span> <a href="../../modules/generated/sklearn.svm.OneClassSVM.html#sklearn.svm.OneClassSVM" title="sklearn.svm.OneClassSVM" class="sphx-glr-backref-module-sklearn-svm sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">svm</span><span class="o">.</span><span class="n">OneClassSVM</span></a><span class="p">(</span>
<span class="n">kernel</span><span class="o">=</span><span class="n">kernel_map</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">kernel</span><span class="o">.</span><span class="n">get</span><span class="p">()],</span>
<span class="n">gamma</span><span class="o">=</span><span class="n">gamma</span><span class="p">,</span>
<span class="n">coef0</span><span class="o">=</span><span class="n">coef0</span><span class="p">,</span>
<span class="n">degree</span><span class="o">=</span><span class="n">degree</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">clf</span><span class="o">.</span><span class="n">fit</span><span class="p">(</span><span class="n">X</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">clf</span> <span class="o">=</span> <a href="../../modules/generated/sklearn.svm.SVC.html#sklearn.svm.SVC" title="sklearn.svm.SVC" class="sphx-glr-backref-module-sklearn-svm sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">svm</span><span class="o">.</span><span class="n">SVC</span></a><span class="p">(</span>
<span class="n">kernel</span><span class="o">=</span><span class="n">kernel_map</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">kernel</span><span class="o">.</span><span class="n">get</span><span class="p">()],</span>
<span class="n">C</span><span class="o">=</span><span class="n">C</span><span class="p">,</span>
<span class="n">gamma</span><span class="o">=</span><span class="n">gamma</span><span class="p">,</span>
<span class="n">coef0</span><span class="o">=</span><span class="n">coef0</span><span class="p">,</span>
<span class="n">degree</span><span class="o">=</span><span class="n">degree</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">clf</span><span class="o">.</span><span class="n">fit</span><span class="p">(</span><span class="n">X</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">clf</span><span class="p">,</span> <span class="s2">"score"</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Accuracy:"</span><span class="p">,</span> <span class="n">clf</span><span class="o">.</span><span class="n">score</span><span class="p">(</span><span class="n">X</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span> <span class="o">*</span> <span class="mi">100</span><span class="p">)</span>
<span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">decision_surface</span><span class="p">(</span><span class="n">clf</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">clf</span> <span class="o">=</span> <span class="n">clf</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">set_surface</span><span class="p">((</span><span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">surface_type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">surface_type</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fitted</span> <span class="o">=</span> <span class="kc">True</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">changed</span><span class="p">(</span><span class="s2">"surface"</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">decision_surface</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">cls</span><span class="p">):</span>
<span class="n">delta</span> <span class="o">=</span> <span class="mi">1</span>
<span class="n">x</span> <span class="o">=</span> <a href="https://numpy.org/doc/stable/reference/generated/numpy.arange.html#numpy.arange" title="numpy.arange" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">arange</span></a><span class="p">(</span><span class="n">x_min</span><span class="p">,</span> <span class="n">x_max</span> <span class="o">+</span> <span class="n">delta</span><span class="p">,</span> <span class="n">delta</span><span class="p">)</span>
<span class="n">y</span> <span class="o">=</span> <a href="https://numpy.org/doc/stable/reference/generated/numpy.arange.html#numpy.arange" title="numpy.arange" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">arange</span></a><span class="p">(</span><span class="n">y_min</span><span class="p">,</span> <span class="n">y_max</span> <span class="o">+</span> <span class="n">delta</span><span class="p">,</span> <span class="n">delta</span><span class="p">)</span>
<span class="n">X1</span><span class="p">,</span> <span class="n">X2</span> <span class="o">=</span> <a href="https://numpy.org/doc/stable/reference/generated/numpy.meshgrid.html#numpy.meshgrid" title="numpy.meshgrid" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-function"><span class="n">np</span><span class="o">.</span><span class="n">meshgrid</span></a><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">)</span>
<span class="n">Z</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="n">decision_function</span><span class="p">(</span><a href="https://numpy.org/doc/stable/reference/generated/numpy.c_.html#numpy.c_" title="numpy.c_" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-data"><span class="n">np</span><span class="o">.</span><span class="n">c_</span></a><span class="p">[</span><span class="n">X1</span><span class="o">.</span><span class="n">ravel</span><span class="p">(),</span> <span class="n">X2</span><span class="o">.</span><span class="n">ravel</span><span class="p">()])</span>
<span class="n">Z</span> <span class="o">=</span> <span class="n">Z</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">X1</span><span class="o">.</span><span class="n">shape</span><span class="p">)</span>
<span class="k">return</span> <span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span>
<span class="k">def</span> <span class="nf">clear_data</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fitted</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">changed</span><span class="p">(</span><span class="s2">"clear"</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">add_example</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">label</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">label</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="o">.</span><span class="n">changed</span><span class="p">(</span><span class="s2">"example_added"</span><span class="p">)</span>
<span class="c1"># update decision surface if already fitted.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">refit</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">refit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Refit the model if already fitted."""</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">fitted</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fit</span><span class="p">()</span>
<span class="k">class</span> <span class="nc">View</span><span class="p">:</span>
<span class="w"> </span><span class="sd">"""Test docstring."""</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">root</span><span class="p">,</span> <span class="n">controller</span><span class="p">):</span>
<span class="n">f</span> <span class="o">=</span> <a href="https://matplotlib.org/stable/api/figure_api.html#matplotlib.figure.Figure" title="matplotlib.figure.Figure" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Figure</span></a><span class="p">()</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">111</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xticks</span><span class="p">([])</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_yticks</span><span class="p">([])</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xlim</span><span class="p">((</span><span class="n">x_min</span><span class="p">,</span> <span class="n">x_max</span><span class="p">))</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_ylim</span><span class="p">((</span><span class="n">y_min</span><span class="p">,</span> <span class="n">y_max</span><span class="p">))</span>
<span class="n">canvas</span> <span class="o">=</span> <a href="https://matplotlib.org/stable/api/backend_tk_api.html#matplotlib.backends.backend_tkagg.FigureCanvasTkAgg" title="matplotlib.backends.backend_tkagg.FigureCanvasTkAgg" class="sphx-glr-backref-module-matplotlib-backends-backend_tkagg sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">FigureCanvasTkAgg</span></a><span class="p">(</span><span class="n">f</span><span class="p">,</span> <span class="n">master</span><span class="o">=</span><span class="n">root</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">canvas</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span>
<span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span>
<span class="c1"># support for matplotlib (1.*)</span>
<span class="n">canvas</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
<span class="n">canvas</span><span class="o">.</span><span class="n">get_tk_widget</span><span class="p">()</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">TOP</span><span class="p">,</span> <span class="n">fill</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">BOTH</span><span class="p">,</span> <span class="n">expand</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
<span class="n">canvas</span><span class="o">.</span><span class="n">_tkcanvas</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">TOP</span><span class="p">,</span> <span class="n">fill</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">BOTH</span><span class="p">,</span> <span class="n">expand</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
<span class="n">canvas</span><span class="o">.</span><span class="n">mpl_connect</span><span class="p">(</span><span class="s2">"button_press_event"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">onclick</span><span class="p">)</span>
<span class="n">toolbar</span> <span class="o">=</span> <span class="n">NavigationToolbar2Tk</span><span class="p">(</span><span class="n">canvas</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span>
<span class="n">toolbar</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">controllbar</span> <span class="o">=</span> <span class="n">ControllBar</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">controller</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">f</span> <span class="o">=</span> <span class="n">f</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span> <span class="o">=</span> <span class="n">ax</span>
<span class="bp">self</span><span class="o">.</span><span class="n">canvas</span> <span class="o">=</span> <span class="n">canvas</span>
<span class="bp">self</span><span class="o">.</span><span class="n">controller</span> <span class="o">=</span> <span class="n">controller</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">c_labels</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">plot_kernels</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">plot_kernels</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="o">-</span><span class="mi">50</span><span class="p">,</span> <span class="o">-</span><span class="mi">60</span><span class="p">,</span> <span class="s2">"Linear: $u^T v$"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="o">-</span><span class="mi">20</span><span class="p">,</span> <span class="o">-</span><span class="mi">60</span><span class="p">,</span> <span class="sa">r</span><span class="s2">"RBF: $\exp (-\gamma \| u-v \|^2)$"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span> <span class="o">-</span><span class="mi">60</span><span class="p">,</span> <span class="sa">r</span><span class="s2">"Poly: $(\gamma \, u^T v + r)^d$"</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">onclick</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span>
<span class="k">if</span> <span class="n">event</span><span class="o">.</span><span class="n">xdata</span> <span class="ow">and</span> <span class="n">event</span><span class="o">.</span><span class="n">ydata</span><span class="p">:</span>
<span class="k">if</span> <span class="n">event</span><span class="o">.</span><span class="n">button</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">controller</span><span class="o">.</span><span class="n">add_example</span><span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">xdata</span><span class="p">,</span> <span class="n">event</span><span class="o">.</span><span class="n">ydata</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">elif</span> <span class="n">event</span><span class="o">.</span><span class="n">button</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">controller</span><span class="o">.</span><span class="n">add_example</span><span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">xdata</span><span class="p">,</span> <span class="n">event</span><span class="o">.</span><span class="n">ydata</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">update_example</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">model</span><span class="p">,</span> <span class="n">idx</span><span class="p">):</span>
<span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">l</span> <span class="o">=</span> <span class="n">model</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">idx</span><span class="p">]</span>
<span class="k">if</span> <span class="n">l</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">color</span> <span class="o">=</span> <span class="s2">"w"</span>
<span class="k">elif</span> <span class="n">l</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="n">color</span> <span class="o">=</span> <span class="s2">"k"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">([</span><span class="n">x</span><span class="p">],</span> <span class="p">[</span><span class="n">y</span><span class="p">],</span> <span class="s2">"</span><span class="si">%s</span><span class="s2">o"</span> <span class="o">%</span> <span class="n">color</span><span class="p">,</span> <span class="n">scalex</span><span class="o">=</span><span class="mf">0.0</span><span class="p">,</span> <span class="n">scaley</span><span class="o">=</span><span class="mf">0.0</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">,</span> <span class="n">model</span><span class="p">):</span>
<span class="k">if</span> <span class="n">event</span> <span class="o">==</span> <span class="s2">"examples_loaded"</span><span class="p">:</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">model</span><span class="o">.</span><span class="n">data</span><span class="p">)):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update_example</span><span class="p">(</span><span class="n">model</span><span class="p">,</span> <span class="n">i</span><span class="p">)</span>
<span class="k">if</span> <span class="n">event</span> <span class="o">==</span> <span class="s2">"example_added"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update_example</span><span class="p">(</span><span class="n">model</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="n">event</span> <span class="o">==</span> <span class="s2">"clear"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">set_xticks</span><span class="p">([])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">set_yticks</span><span class="p">([])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">c_labels</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">plot_kernels</span><span class="p">()</span>
<span class="k">if</span> <span class="n">event</span> <span class="o">==</span> <span class="s2">"surface"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">remove_surface</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">plot_support_vectors</span><span class="p">(</span><span class="n">model</span><span class="o">.</span><span class="n">clf</span><span class="o">.</span><span class="n">support_vectors_</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">plot_decision_surface</span><span class="p">(</span><span class="n">model</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">model</span><span class="o">.</span><span class="n">surface_type</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">canvas</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">remove_surface</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Remove old decision surface."""</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span>
<span class="k">for</span> <span class="n">contour</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">contour</span><span class="p">,</span> <a href="https://matplotlib.org/stable/api/contour_api.html#matplotlib.contour.ContourSet" title="matplotlib.contour.ContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">ContourSet</span></a><span class="p">):</span>
<span class="k">for</span> <span class="n">lineset</span> <span class="ow">in</span> <span class="n">contour</span><span class="o">.</span><span class="n">collections</span><span class="p">:</span>
<span class="n">lineset</span><span class="o">.</span><span class="n">remove</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">contour</span><span class="o">.</span><span class="n">remove</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">def</span> <span class="nf">plot_support_vectors</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">support_vectors</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Plot the support vectors by placing circles over the</span>
<span class="sd"> corresponding data points and adds the circle collection</span>
<span class="sd"> to the contours list."""</span>
<span class="n">cs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">scatter</span><span class="p">(</span>
<span class="n">support_vectors</span><span class="p">[:,</span> <span class="mi">0</span><span class="p">],</span>
<span class="n">support_vectors</span><span class="p">[:,</span> <span class="mi">1</span><span class="p">],</span>
<span class="n">s</span><span class="o">=</span><span class="mi">80</span><span class="p">,</span>
<span class="n">edgecolors</span><span class="o">=</span><span class="s2">"k"</span><span class="p">,</span>
<span class="n">facecolors</span><span class="o">=</span><span class="s2">"none"</span><span class="p">,</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">cs</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">plot_decision_surface</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">surface</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span> <span class="o">=</span> <span class="n">surface</span>
<span class="k">if</span> <span class="nb">type</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="n">levels</span> <span class="o">=</span> <span class="p">[</span><span class="o">-</span><span class="mf">1.0</span><span class="p">,</span> <span class="mf">0.0</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">]</span>
<span class="n">linestyles</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"dashed"</span><span class="p">,</span> <span class="s2">"solid"</span><span class="p">,</span> <span class="s2">"dashed"</span><span class="p">]</span>
<span class="n">colors</span> <span class="o">=</span> <span class="s2">"k"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">contour</span><span class="p">(</span><span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span><span class="p">,</span> <span class="n">levels</span><span class="p">,</span> <span class="n">colors</span><span class="o">=</span><span class="n">colors</span><span class="p">,</span> <span class="n">linestyles</span><span class="o">=</span><span class="n">linestyles</span><span class="p">)</span>
<span class="p">)</span>
<span class="k">elif</span> <span class="nb">type</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">contourf</span><span class="p">(</span>
<span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="n">cmap</span><span class="o">=</span><span class="n">matplotlib</span><span class="o">.</span><span class="n">cm</span><span class="o">.</span><span class="n">bone</span><span class="p">,</span> <span class="n">origin</span><span class="o">=</span><span class="s2">"lower"</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="mf">0.85</span>
<span class="p">)</span>
<span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">contours</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ax</span><span class="o">.</span><span class="n">contour</span><span class="p">(</span><span class="n">X1</span><span class="p">,</span> <span class="n">X2</span><span class="p">,</span> <span class="n">Z</span><span class="p">,</span> <span class="p">[</span><span class="mf">0.0</span><span class="p">],</span> <span class="n">colors</span><span class="o">=</span><span class="s2">"k"</span><span class="p">,</span> <span class="n">linestyles</span><span class="o">=</span><span class="p">[</span><span class="s2">"solid"</span><span class="p">])</span>
<span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"surface type unknown"</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">ControllBar</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">root</span><span class="p">,</span> <span class="n">controller</span><span class="p">):</span>
<span class="n">fm</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">root</span><span class="p">)</span>
<span class="n">kernel_group</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">fm</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Radiobutton</span><span class="p">(</span>
<span class="n">kernel_group</span><span class="p">,</span>
<span class="n">text</span><span class="o">=</span><span class="s2">"Linear"</span><span class="p">,</span>
<span class="n">variable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">kernel</span><span class="p">,</span>
<span class="n">value</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span>
<span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">refit</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">anchor</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">W</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Radiobutton</span><span class="p">(</span>
<span class="n">kernel_group</span><span class="p">,</span>
<span class="n">text</span><span class="o">=</span><span class="s2">"RBF"</span><span class="p">,</span>
<span class="n">variable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">kernel</span><span class="p">,</span>
<span class="n">value</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
<span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">refit</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">anchor</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">W</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Radiobutton</span><span class="p">(</span>
<span class="n">kernel_group</span><span class="p">,</span>
<span class="n">text</span><span class="o">=</span><span class="s2">"Poly"</span><span class="p">,</span>
<span class="n">variable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">kernel</span><span class="p">,</span>
<span class="n">value</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span>
<span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">refit</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">anchor</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">W</span><span class="p">)</span>
<span class="n">kernel_group</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">valbox</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">fm</span><span class="p">)</span>
<span class="n">controller</span><span class="o">.</span><span class="n">complexity</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">StringVar</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">complexity</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"1.0"</span><span class="p">)</span>
<span class="n">c</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">valbox</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Label</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"C:"</span><span class="p">,</span> <span class="n">anchor</span><span class="o">=</span><span class="s2">"e"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">7</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Entry</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">6</span><span class="p">,</span> <span class="n">textvariable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">complexity</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">c</span><span class="o">.</span><span class="n">pack</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">gamma</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">StringVar</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">gamma</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"0.01"</span><span class="p">)</span>
<span class="n">g</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">valbox</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Label</span><span class="p">(</span><span class="n">g</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"gamma:"</span><span class="p">,</span> <span class="n">anchor</span><span class="o">=</span><span class="s2">"e"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">7</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Entry</span><span class="p">(</span><span class="n">g</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">6</span><span class="p">,</span> <span class="n">textvariable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">gamma</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">g</span><span class="o">.</span><span class="n">pack</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">degree</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">StringVar</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">degree</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"3"</span><span class="p">)</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">valbox</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Label</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"degree:"</span><span class="p">,</span> <span class="n">anchor</span><span class="o">=</span><span class="s2">"e"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">7</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Entry</span><span class="p">(</span><span class="n">d</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">6</span><span class="p">,</span> <span class="n">textvariable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">degree</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">d</span><span class="o">.</span><span class="n">pack</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">coef0</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">StringVar</span><span class="p">()</span>
<span class="n">controller</span><span class="o">.</span><span class="n">coef0</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"0"</span><span class="p">)</span>
<span class="n">r</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">valbox</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Label</span><span class="p">(</span><span class="n">r</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"coef0:"</span><span class="p">,</span> <span class="n">anchor</span><span class="o">=</span><span class="s2">"e"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">7</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Entry</span><span class="p">(</span><span class="n">r</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">6</span><span class="p">,</span> <span class="n">textvariable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">coef0</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">r</span><span class="o">.</span><span class="n">pack</span><span class="p">()</span>
<span class="n">valbox</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">cmap_group</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Frame</span><span class="p">(</span><span class="n">fm</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Radiobutton</span><span class="p">(</span>
<span class="n">cmap_group</span><span class="p">,</span>
<span class="n">text</span><span class="o">=</span><span class="s2">"Hyperplanes"</span><span class="p">,</span>
<span class="n">variable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">surface_type</span><span class="p">,</span>
<span class="n">value</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span>
<span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">refit</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">anchor</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">W</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Radiobutton</span><span class="p">(</span>
<span class="n">cmap_group</span><span class="p">,</span>
<span class="n">text</span><span class="o">=</span><span class="s2">"Surface"</span><span class="p">,</span>
<span class="n">variable</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">surface_type</span><span class="p">,</span>
<span class="n">value</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
<span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">refit</span><span class="p">,</span>
<span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">anchor</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">W</span><span class="p">)</span>
<span class="n">cmap_group</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">train_button</span> <span class="o">=</span> <span class="n">Tk</span><span class="o">.</span><span class="n">Button</span><span class="p">(</span><span class="n">fm</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"Fit"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">5</span><span class="p">,</span> <span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">fit</span><span class="p">)</span>
<span class="n">train_button</span><span class="o">.</span><span class="n">pack</span><span class="p">()</span>
<span class="n">fm</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">Button</span><span class="p">(</span><span class="n">fm</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s2">"Clear"</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">5</span><span class="p">,</span> <span class="n">command</span><span class="o">=</span><span class="n">controller</span><span class="o">.</span><span class="n">clear_data</span><span class="p">)</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span>
<span class="n">side</span><span class="o">=</span><span class="n">Tk</span><span class="o">.</span><span class="n">LEFT</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">get_parser</span><span class="p">():</span>
<span class="kn">from</span> <span class="nn">optparse</span> <span class="kn">import</span> <a href="https://docs.python.org/3/library/optparse.html#optparse.OptionParser" title="optparse.OptionParser" class="sphx-glr-backref-module-optparse sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">OptionParser</span></a>
<span class="n">op</span> <span class="o">=</span> <a href="https://docs.python.org/3/library/optparse.html#optparse.OptionParser" title="optparse.OptionParser" class="sphx-glr-backref-module-optparse sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">OptionParser</span></a><span class="p">()</span>
<span class="n">op</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span>
<span class="s2">"--output"</span><span class="p">,</span>
<span class="n">action</span><span class="o">=</span><span class="s2">"store"</span><span class="p">,</span>
<span class="nb">type</span><span class="o">=</span><span class="s2">"str"</span><span class="p">,</span>
<span class="n">dest</span><span class="o">=</span><span class="s2">"output"</span><span class="p">,</span>
<span class="n">help</span><span class="o">=</span><span class="s2">"Path where to dump data."</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">op</span>
<span class="k">def</span> <span class="nf">main</span><span class="p">(</span><span class="n">argv</span><span class="p">):</span>
<span class="n">op</span> <span class="o">=</span> <span class="n">get_parser</span><span class="p">()</span>
<span class="n">opts</span><span class="p">,</span> <span class="n">args</span> <span class="o">=</span> <span class="n">op</span><span class="o">.</span><span class="n">parse_args</span><span class="p">(</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span>
<span class="n">root</span> <span class="o">=</span> <a href="https://docs.python.org/3/library/tkinter.html#tkinter.Tk" title="tkinter.Tk" class="sphx-glr-backref-module-tkinter sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Tk</span><span class="o">.</span><span class="n">Tk</span></a><span class="p">()</span>
<span class="n">model</span> <span class="o">=</span> <span class="n">Model</span><span class="p">()</span>
<span class="n">controller</span> <span class="o">=</span> <span class="n">Controller</span><span class="p">(</span><span class="n">model</span><span class="p">)</span>
<span class="n">root</span><span class="o">.</span><span class="n">wm_title</span><span class="p">(</span><span class="s2">"Scikit-learn Libsvm GUI"</span><span class="p">)</span>
<span class="n">view</span> <span class="o">=</span> <span class="n">View</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">controller</span><span class="p">)</span>
<span class="n">model</span><span class="o">.</span><span class="n">add_observer</span><span class="p">(</span><span class="n">view</span><span class="p">)</span>
<span class="n">Tk</span><span class="o">.</span><span class="n">mainloop</span><span class="p">()</span>
<span class="k">if</span> <span class="n">opts</span><span class="o">.</span><span class="n">output</span><span class="p">:</span>
<span class="n">model</span><span class="o">.</span><a href="../../modules/generated/sklearn.datasets.dump_svmlight_file.html#sklearn.datasets.dump_svmlight_file" title="sklearn.datasets.dump_svmlight_file" class="sphx-glr-backref-module-sklearn-datasets sphx-glr-backref-type-py-function"><span class="n">dump_svmlight_file</span></a><span class="p">(</span><span class="n">opts</span><span class="o">.</span><span class="n">output</span><span class="p">)</span>
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">"__main__"</span><span class="p">:</span>
<span class="n">main</span><span class="p">(</span><a href="https://docs.python.org/3/library/sys.html#sys.argv" title="sys.argv" class="sphx-glr-backref-module-sys sphx-glr-backref-type-py-data"><span class="n">sys</span><span class="o">.</span><span class="n">argv</span></a><span class="p">)</span>
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