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<h1>Source code for pyFTS.partitioners.Util</h1><div class="highlight"><pre>
<span></span><span class="sd">"""</span>
<span class="sd">Facility methods for pyFTS partitioners module</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="kn">import</span> <span class="nn">pandas</span> <span class="k">as</span> <span class="nn">pd</span>
<span class="kn">import</span> <span class="nn">matplotlib</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="kn">import</span> <span class="nn">matplotlib.colors</span> <span class="k">as</span> <span class="nn">pltcolors</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="c1">#from mpl_toolkits.mplot3d import Axes3D</span>
<span class="kn">from</span> <span class="nn">pyFTS.benchmarks</span> <span class="k">import</span> <span class="n">Measures</span>
<span class="kn">from</span> <span class="nn">pyFTS.common</span> <span class="k">import</span> <span class="n">Membership</span><span class="p">,</span> <span class="n">Util</span>
<span class="kn">from</span> <span class="nn">pyFTS.partitioners</span> <span class="k">import</span> <span class="n">Grid</span><span class="p">,</span><span class="n">Huarng</span><span class="p">,</span><span class="n">FCM</span><span class="p">,</span><span class="n">Entropy</span>
<span class="n">all_methods</span> <span class="o">=</span> <span class="p">[</span><span class="n">Grid</span><span class="o">.</span><span class="n">GridPartitioner</span><span class="p">,</span> <span class="n">Entropy</span><span class="o">.</span><span class="n">EntropyPartitioner</span><span class="p">,</span> <span class="n">FCM</span><span class="o">.</span><span class="n">FCMPartitioner</span><span class="p">,</span> <span class="n">Huarng</span><span class="o">.</span><span class="n">HuarngPartitioner</span><span class="p">]</span>
<span class="n">mfs</span> <span class="o">=</span> <span class="p">[</span><span class="n">Membership</span><span class="o">.</span><span class="n">trimf</span><span class="p">,</span> <span class="n">Membership</span><span class="o">.</span><span class="n">gaussmf</span><span class="p">,</span> <span class="n">Membership</span><span class="o">.</span><span class="n">trapmf</span><span class="p">]</span>
<div class="viewcode-block" id="plot_sets"><a class="viewcode-back" href="../../../pyFTS.partitioners.html#pyFTS.partitioners.Util.plot_sets">[docs]</a><span class="k">def</span> <span class="nf">plot_sets</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">sets</span><span class="p">,</span> <span class="n">titles</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[</span><span class="mi">12</span><span class="p">,</span> <span class="mi">10</span><span class="p">],</span> <span class="n">save</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">file</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">num</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">sets</span><span class="p">)</span>
<span class="k">if</span> <span class="n">axis</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">fig</span><span class="p">,</span> <span class="n">axes</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">subplots</span><span class="p">(</span><span class="n">nrows</span><span class="o">=</span><span class="n">num</span><span class="p">,</span> <span class="n">ncols</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span><span class="n">figsize</span><span class="o">=</span><span class="n">size</span><span class="p">)</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="n">num</span><span class="p">):</span>
<span class="n">ticks</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">x</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">axes</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="k">if</span> <span class="n">axis</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">axis</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_title</span><span class="p">(</span><span class="n">titles</span><span class="p">[</span><span class="n">k</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="mi">0</span><span class="p">,</span> <span class="mf">1.1</span><span class="p">])</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">sets</span><span class="p">[</span><span class="n">k</span><span class="p">]</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">sets</span><span class="p">[</span><span class="n">k</span><span class="p">][</span><span class="n">key</span><span class="p">]</span>
<span class="k">if</span> <span class="n">s</span><span class="o">.</span><span class="n">mf</span> <span class="o">==</span> <span class="n">Membership</span><span class="o">.</span><span class="n">trimf</span><span class="p">:</span>
<span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">parameters</span><span class="p">,[</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">])</span>
<span class="k">elif</span> <span class="n">s</span><span class="o">.</span><span class="n">mf</span> <span class="o">==</span> <span class="n">Membership</span><span class="o">.</span><span class="n">gaussmf</span><span class="p">:</span>
<span class="n">tmpx</span> <span class="o">=</span> <span class="p">[</span> <span class="n">kk</span> <span class="k">for</span> <span class="n">kk</span> <span class="ow">in</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">lower</span><span class="p">,</span> <span class="n">s</span><span class="o">.</span><span class="n">upper</span><span class="p">)]</span>
<span class="n">tmpy</span> <span class="o">=</span> <span class="p">[</span><span class="n">s</span><span class="o">.</span><span class="n">membership</span><span class="p">(</span><span class="n">kk</span><span class="p">)</span> <span class="k">for</span> <span class="n">kk</span> <span class="ow">in</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">lower</span><span class="p">,</span> <span class="n">s</span><span class="o">.</span><span class="n">upper</span><span class="p">)]</span>
<span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">tmpx</span><span class="p">,</span> <span class="n">tmpy</span><span class="p">)</span>
<span class="k">elif</span> <span class="n">s</span><span class="o">.</span><span class="n">mf</span> <span class="o">==</span> <span class="n">Membership</span><span class="o">.</span><span class="n">trapmf</span><span class="p">:</span>
<span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">parameters</span><span class="p">,</span> <span class="p">[</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">])</span>
<span class="n">ticks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="nb">round</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">centroid</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> <span class="o">+</span> <span class="s1">'</span><span class="se">\n</span><span class="s1">'</span> <span class="o">+</span> <span class="n">s</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
<span class="n">x</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">centroid</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">xaxis</span><span class="o">.</span><span class="n">set_ticklabels</span><span class="p">(</span><span class="n">ticks</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">xaxis</span><span class="o">.</span><span class="n">set_ticks</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
<span class="k">if</span> <span class="n">axis</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">plt</span><span class="o">.</span><span class="n">tight_layout</span><span class="p">()</span>
<span class="n">Util</span><span class="o">.</span><span class="n">show_and_save_image</span><span class="p">(</span><span class="n">fig</span><span class="p">,</span> <span class="n">file</span><span class="p">,</span> <span class="n">save</span><span class="p">)</span></div>
<div class="viewcode-block" id="plot_partitioners"><a class="viewcode-back" href="../../../pyFTS.partitioners.html#pyFTS.partitioners.Util.plot_partitioners">[docs]</a><span class="k">def</span> <span class="nf">plot_partitioners</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">objs</span><span class="p">,</span> <span class="n">tam</span><span class="o">=</span><span class="p">[</span><span class="mi">12</span><span class="p">,</span> <span class="mi">10</span><span class="p">],</span> <span class="n">save</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">file</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">sets</span> <span class="o">=</span> <span class="p">[</span><span class="n">k</span><span class="o">.</span><span class="n">sets</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">objs</span><span class="p">]</span>
<span class="n">titles</span> <span class="o">=</span> <span class="p">[</span><span class="n">k</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">objs</span><span class="p">]</span>
<span class="n">plot_sets</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">sets</span><span class="p">,</span> <span class="n">titles</span><span class="p">,</span> <span class="n">tam</span><span class="p">,</span> <span class="n">save</span><span class="p">,</span> <span class="n">file</span><span class="p">,</span> <span class="n">axis</span><span class="p">)</span></div>
<div class="viewcode-block" id="explore_partitioners"><a class="viewcode-back" href="../../../pyFTS.partitioners.html#pyFTS.partitioners.Util.explore_partitioners">[docs]</a><span class="k">def</span> <span class="nf">explore_partitioners</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">npart</span><span class="p">,</span> <span class="n">methods</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">mf</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">transformation</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">size</span><span class="o">=</span><span class="p">[</span><span class="mi">12</span><span class="p">,</span> <span class="mi">10</span><span class="p">],</span> <span class="n">save</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">file</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Create partitioners for the mf membership functions and npart partitions and show the partitioning images.</span>
<span class="sd"> :data: Time series data</span>
<span class="sd"> :npart: Maximum number of partitions of the universe of discourse</span>
<span class="sd"> :methods: A list with the partitioning methods to be used</span>
<span class="sd"> :mf: A list with the membership functions to be used</span>
<span class="sd"> :transformation: a transformation to be used in partitioner</span>
<span class="sd"> :size: list, the size of the output image [width, height]</span>
<span class="sd"> :save: boolean, if the image will be saved on disk</span>
<span class="sd"> :file: string, the file path to save the image</span>
<span class="sd"> :return: the list of the built partitioners</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">methods</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">methods</span> <span class="o">=</span> <span class="n">all_methods</span>
<span class="k">if</span> <span class="n">mf</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">mf</span> <span class="o">=</span> <span class="n">mfs</span>
<span class="n">objs</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">methods</span><span class="p">:</span>
<span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">mf</span><span class="p">:</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">p</span><span class="p">(</span><span class="n">data</span><span class="o">=</span><span class="n">data</span><span class="p">,</span> <span class="n">npart</span><span class="o">=</span><span class="n">npart</span><span class="p">,</span> <span class="n">func</span><span class="o">=</span><span class="n">m</span><span class="p">,</span> <span class="n">transformation</span><span class="o">=</span><span class="n">transformation</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">name</span> <span class="o">+</span> <span class="s2">" - "</span> <span class="o">+</span> <span class="n">obj</span><span class="o">.</span><span class="n">membership_function</span><span class="o">.</span><span class="vm">__name__</span>
<span class="n">objs</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>
<span class="n">plot_partitioners</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">objs</span><span class="p">,</span> <span class="n">size</span><span class="p">,</span> <span class="n">save</span><span class="p">,</span> <span class="n">file</span><span class="p">)</span>
<span class="k">return</span> <span class="n">objs</span></div>
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