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<div id="projectbrief">Set of algorithms implemented in C++.</div>
<div id="projectbrief">All the algorithms implemented in C++</div>
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@@ -128,7 +145,9 @@ Include dependency graph for kohonen_som_trace.cpp:</div>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">namespace &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d77/namespacemachine__learning.html">machine_learning</a></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:gaf5ce14f026d6d231bef29161bac2b485" id="r_gaf5ce14f026d6d231bef29161bac2b485"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a> (double a, double b)</td></tr>
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<tr class="memitem:a0283886819c7c140a023582b7269e2d0" id="r_a0283886819c7c140a023582b7269e2d0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a0283886819c7c140a023582b7269e2d0">test2</a> ()</td></tr>
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<tr class="memitem:a7154fe319e6033485a8a6cd6f0d8932d" id="r_a7154fe319e6033485a8a6cd6f0d8932d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a7154fe319e6033485a8a6cd6f0d8932d">test_3d_classes</a> (<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>&lt; <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray</a>&lt; double &gt; &gt; *<a class="el" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>)</td></tr>
<tr class="memitem:a7154fe319e6033485a8a6cd6f0d8932d" id="r_a7154fe319e6033485a8a6cd6f0d8932d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a7154fe319e6033485a8a6cd6f0d8932d">test_3d_classes</a> (std::vector&lt; std::valarray&lt; double &gt; &gt; *<a class="el" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>)</td></tr>
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@@ -170,6 +189,8 @@ Functions</h2></td></tr>
<dd>
The compiled code is much slower when compiled with MS Visual C++ 2019 than with GCC on windows </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="../../d4/def/kohonen__som__topology_8cpp.html" title="Kohonen self organizing map (topological map)">kohonen_som_topology.cpp</a> </dd></dl>
<p class="definition">Definition in file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a2256c10b16edba377b64a44b6c656908" name="a2256c10b16edba377b64a44b6c656908"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2256c10b16edba377b64a44b6c656908">&#9670;&#160;</a></span>get_clock_diff()</h2>
@@ -198,6 +219,8 @@ The compiled code is much slower when compiled with MS Visual C++ 2019 than with
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>time difference in seconds </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00452">452</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 452</span> {</div>
<div class="line"><span class="lineno"> 453</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(end_t - start_t) / CLOCKS_PER_SEC;</div>
<div class="line"><span class="lineno"> 454</span>}</div>
@@ -223,53 +246,45 @@ The compiled code is much slower when compiled with MS Visual C++ 2019 than with
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<p>Main function </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00457">457</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 457</span> {</div>
<div class="line"><span class="lineno"> 458</span><span class="preprocessor">#ifdef _OPENMP</span></div>
<div class="line"><span class="lineno"> 459</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Using OpenMP based parallelization\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 459</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Using OpenMP based parallelization\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 460</span><span class="preprocessor">#else</span></div>
<div class="line"><span class="lineno"> 461</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;NOT using OpenMP based parallelization\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 461</span> std::cout &lt;&lt; <span class="stringliteral">&quot;NOT using OpenMP based parallelization\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 462</span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="lineno"> 463</span> </div>
<div class="line"><span class="lineno"> 464</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/random/srand.html">std::srand</a>(<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/time.html">std::time</a>(<span class="keyword">nullptr</span>));</div>
<div class="line"><span class="lineno"> 464</span> std::srand(std::time(<span class="keyword">nullptr</span>));</div>
<div class="line"><span class="lineno"> 465</span> </div>
<div class="line"><span class="lineno"> 466</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock_t.html">std::clock_t</a> start_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 466</span> std::clock_t start_clk = std::clock();</div>
<div class="line"><span class="lineno"> 467</span> <a class="code hl_function" href="#a1440a7779ac56f47a3f355ce4a8c7da0">test1</a>();</div>
<div class="line"><span class="lineno"> 468</span> <span class="keyword">auto</span> end_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 469</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Test 1 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 468</span> <span class="keyword">auto</span> end_clk = std::clock();</div>
<div class="line"><span class="lineno"> 469</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Test 1 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 470</span> &lt;&lt; <span class="stringliteral">&quot; sec\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 471</span> </div>
<div class="line"><span class="lineno"> 472</span> start_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 472</span> start_clk = std::clock();</div>
<div class="line"><span class="lineno"> 473</span> <a class="code hl_function" href="#a0283886819c7c140a023582b7269e2d0">test2</a>();</div>
<div class="line"><span class="lineno"> 474</span> end_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 475</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Test 2 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 474</span> end_clk = std::clock();</div>
<div class="line"><span class="lineno"> 475</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Test 2 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 476</span> &lt;&lt; <span class="stringliteral">&quot; sec\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 477</span> </div>
<div class="line"><span class="lineno"> 478</span> start_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 478</span> start_clk = std::clock();</div>
<div class="line"><span class="lineno"> 479</span> <a class="code hl_function" href="#a6d0455dd5c30adda100e95f0423c786e">test3</a>();</div>
<div class="line"><span class="lineno"> 480</span> end_clk = <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a>();</div>
<div class="line"><span class="lineno"> 481</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Test 3 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 480</span> end_clk = std::clock();</div>
<div class="line"><span class="lineno"> 481</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Test 3 completed in &quot;</span> &lt;&lt; <a class="code hl_function" href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a>(start_clk, end_clk)</div>
<div class="line"><span class="lineno"> 482</span> &lt;&lt; <span class="stringliteral">&quot; sec\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 483</span> </div>
<div class="line"><span class="lineno"> 484</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div>
<div class="line"><span class="lineno"> 484</span> std::cout</div>
<div class="line"><span class="lineno"> 485</span> &lt;&lt; <span class="stringliteral">&quot;(Note: Calculated times include: creating test sets, training &quot;</span></div>
<div class="line"><span class="lineno"> 486</span> <span class="stringliteral">&quot;model and writing files to disk.)\n\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 487</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 488</span>}</div>
<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
<div class="ttc" id="aclock_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/c/clock.html">std::clock</a></div><div class="ttdeci">T clock(T... args)</div></div>
<div class="ttc" id="aclock_t_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/c/clock_t.html">std::clock_t</a></div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a0283886819c7c140a023582b7269e2d0"><div class="ttname"><a href="#a0283886819c7c140a023582b7269e2d0">test2</a></div><div class="ttdeci">void test2()</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:315</div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a1440a7779ac56f47a3f355ce4a8c7da0"><div class="ttname"><a href="#a1440a7779ac56f47a3f355ce4a8c7da0">test1</a></div><div class="ttdeci">void test1()</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:233</div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a2256c10b16edba377b64a44b6c656908"><div class="ttname"><a href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a></div><div class="ttdeci">double get_clock_diff(clock_t start_t, clock_t end_t)</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:452</div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a6d0455dd5c30adda100e95f0423c786e"><div class="ttname"><a href="#a6d0455dd5c30adda100e95f0423c786e">test3</a></div><div class="ttdeci">void test3()</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:414</div></div>
<div class="ttc" id="asrand_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/srand.html">std::srand</a></div><div class="ttdeci">T srand(T... args)</div></div>
<div class="ttc" id="atime_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/c/time.html">std::time</a></div><div class="ttdeci">T time(T... args)</div></div>
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Here is the call graph for this function:</div>
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<div class="center"><div class="zoom"><iframe scrolling="no" frameborder="0" src="../../d9/d49/kohonen__som__trace_8cpp_a3c04138a5bfe5d72780bb7e82a18e627_cgraph.svg" width="100%" height="600"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div></div>
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<div class="ttc" id="akohonen__som__trace_8cpp_html_a0283886819c7c140a023582b7269e2d0"><div class="ttname"><a href="#a0283886819c7c140a023582b7269e2d0">test2</a></div><div class="ttdeci">void test2()</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00315">kohonen_som_trace.cpp:315</a></div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a1440a7779ac56f47a3f355ce4a8c7da0"><div class="ttname"><a href="#a1440a7779ac56f47a3f355ce4a8c7da0">test1</a></div><div class="ttdeci">void test1()</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00233">kohonen_som_trace.cpp:233</a></div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a2256c10b16edba377b64a44b6c656908"><div class="ttname"><a href="#a2256c10b16edba377b64a44b6c656908">get_clock_diff</a></div><div class="ttdeci">double get_clock_diff(clock_t start_t, clock_t end_t)</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00452">kohonen_som_trace.cpp:452</a></div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a6d0455dd5c30adda100e95f0423c786e"><div class="ttname"><a href="#a6d0455dd5c30adda100e95f0423c786e">test3</a></div><div class="ttdeci">void test3()</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00414">kohonen_som_trace.cpp:414</a></div></div>
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@@ -297,19 +312,21 @@ Here is the call graph for this function:</div>
<div class="line"> &quot;w12.csv&quot; title &quot;w2&quot;</div>
</div><!-- fragment --><p> <img src="https://raw.githubusercontent.com/TheAlgorithms/C-Plus-Plus/docs/images/machine_learning/kohonen/test1.svg" alt="Sample execution
output" style="pointer-events: none;" class="inline"/> </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00233">233</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 233</span> {</div>
<div class="line"><span class="lineno"> 234</span> <span class="keywordtype">int</span> j = 0, <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = 500;</div>
<div class="line"><span class="lineno"> 235</span> <span class="keywordtype">int</span> features = 2;</div>
<div class="line"><span class="lineno"> 236</span> <span class="keywordtype">int</span> num_out = 50;</div>
<div class="line"><span class="lineno"> 237</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; X(N);</div>
<div class="line"><span class="lineno"> 238</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 239</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/algorithm/max.html">std::max</a>(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 237</span> std::vector&lt;std::valarray&lt;double&gt;&gt; X(N);</div>
<div class="line"><span class="lineno"> 238</span> std::vector&lt;std::valarray&lt;double&gt;&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 239</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; std::max(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 240</span> <span class="comment">// loop till max(N, num_out)</span></div>
<div class="line"><span class="lineno"> 241</span> <span class="keywordflow">if</span> (i &lt; N) { <span class="comment">// only add new arrays if i &lt; N</span></div>
<div class="line"><span class="lineno"> 242</span> X[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 242</span> X[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 243</span> }</div>
<div class="line"><span class="lineno"> 244</span> <span class="keywordflow">if</span> (i &lt; num_out) { <span class="comment">// only add new arrays if i &lt; num_out</span></div>
<div class="line"><span class="lineno"> 245</span> W[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 245</span> W[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 246</span> </div>
<div class="line"><span class="lineno"> 247</span><span class="preprocessor">#ifdef _OPENMP</span></div>
<div class="line"><span class="lineno"> 248</span><span class="preprocessor">#pragma omp for</span></div>
@@ -327,19 +344,11 @@ Here is the call graph for this function:</div>
<div class="line"><span class="lineno"> 260</span> kohonen_som_tracer(X, &amp;W, 0.1); <span class="comment">// train the SOM</span></div>
<div class="line"><span class="lineno"> 261</span> <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gae0208548f8b393528e5db01717e88e67">save_nd_data</a>(<span class="stringliteral">&quot;w12.csv&quot;</span>, W); <span class="comment">// save the resultant weights</span></div>
<div class="line"><span class="lineno"> 262</span>}</div>
<div class="ttc" id="agroup__machine__learning_html_gae0208548f8b393528e5db01717e88e67"><div class="ttname"><a href="../../d9/d66/group__machine__learning.html#gae0208548f8b393528e5db01717e88e67">save_nd_data</a></div><div class="ttdeci">int save_nd_data(const char *fname, const std::vector&lt; std::valarray&lt; double &gt; &gt; &amp;X)</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:58</div></div>
<div class="ttc" id="agroup__machine__learning_html_gaf5ce14f026d6d231bef29161bac2b485"><div class="ttname"><a href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a></div><div class="ttdeci">double _random(double a, double b)</div><div class="ttdef"><b>Definition</b> kohonen_som_topology.cpp:53</div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_ae571600aa42a81bc14a4a602ea5ff00d"><div class="ttname"><a href="#ae571600aa42a81bc14a4a602ea5ff00d">test_circle</a></div><div class="ttdeci">void test_circle(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:196</div></div>
<div class="ttc" id="amax_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/max.html">std::max</a></div><div class="ttdeci">T max(T... args)</div></div>
<div class="ttc" id="asparse__table_8cpp_html_a10f3ffb3f6f7e1b83d556b9c8de89a5d"><div class="ttname"><a href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">data_structures::sparse_table::N</a></div><div class="ttdeci">constexpr uint32_t N</div><div class="ttdoc">A struct to represent sparse table for min() as their invariant function, for the given array A....</div><div class="ttdef"><b>Definition</b> sparse_table.cpp:48</div></div>
<div class="ttc" id="avalarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray</a></div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d9/d49/kohonen__som__trace_8cpp_a1440a7779ac56f47a3f355ce4a8c7da0_cgraph.svg" width="531" height="211"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="agroup__machine__learning_html_gae0208548f8b393528e5db01717e88e67"><div class="ttname"><a href="../../d9/d66/group__machine__learning.html#gae0208548f8b393528e5db01717e88e67">save_nd_data</a></div><div class="ttdeci">int save_nd_data(const char *fname, const std::vector&lt; std::valarray&lt; double &gt; &gt; &amp;X)</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00058">kohonen_som_trace.cpp:58</a></div></div>
<div class="ttc" id="agroup__machine__learning_html_gaf5ce14f026d6d231bef29161bac2b485"><div class="ttname"><a href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a></div><div class="ttdeci">double _random(double a, double b)</div><div class="ttdef"><b>Definition</b> <a href="../../d4/def/kohonen__som__topology_8cpp_source.html#l00053">kohonen_som_topology.cpp:53</a></div></div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_ae571600aa42a81bc14a4a602ea5ff00d"><div class="ttname"><a href="#ae571600aa42a81bc14a4a602ea5ff00d">test_circle</a></div><div class="ttdeci">void test_circle(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00196">kohonen_som_trace.cpp:196</a></div></div>
<div class="ttc" id="asparse__table_8cpp_html_a10f3ffb3f6f7e1b83d556b9c8de89a5d"><div class="ttname"><a href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">data_structures::sparse_table::N</a></div><div class="ttdeci">constexpr uint32_t N</div><div class="ttdoc">A struct to represent sparse table for min() as their invariant function, for the given array A....</div><div class="ttdef"><b>Definition</b> <a href="../../d8/dab/sparse__table_8cpp_source.html#l00048">sparse_table.cpp:48</a></div></div>
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@@ -367,19 +376,21 @@ Here is the call graph for this function:</div>
<div class="line"> &quot;w22.csv&quot; title &quot;w2&quot;</div>
</div><!-- fragment --><p> <img src="https://raw.githubusercontent.com/TheAlgorithms/C-Plus-Plus/docs/images/machine_learning/kohonen/test2.svg" alt="Sample execution
output" style="pointer-events: none;" class="inline"/> </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00315">315</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 315</span> {</div>
<div class="line"><span class="lineno"> 316</span> <span class="keywordtype">int</span> j = 0, <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = 500;</div>
<div class="line"><span class="lineno"> 317</span> <span class="keywordtype">int</span> features = 2;</div>
<div class="line"><span class="lineno"> 318</span> <span class="keywordtype">int</span> num_out = 20;</div>
<div class="line"><span class="lineno"> 319</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; X(N);</div>
<div class="line"><span class="lineno"> 320</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 321</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/algorithm/max.html">std::max</a>(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 319</span> std::vector&lt;std::valarray&lt;double&gt;&gt; X(N);</div>
<div class="line"><span class="lineno"> 320</span> std::vector&lt;std::valarray&lt;double&gt;&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 321</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; std::max(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 322</span> <span class="comment">// loop till max(N, num_out)</span></div>
<div class="line"><span class="lineno"> 323</span> <span class="keywordflow">if</span> (i &lt; N) { <span class="comment">// only add new arrays if i &lt; N</span></div>
<div class="line"><span class="lineno"> 324</span> X[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 324</span> X[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 325</span> }</div>
<div class="line"><span class="lineno"> 326</span> <span class="keywordflow">if</span> (i &lt; num_out) { <span class="comment">// only add new arrays if i &lt; num_out</span></div>
<div class="line"><span class="lineno"> 327</span> W[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 327</span> W[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 328</span> </div>
<div class="line"><span class="lineno"> 329</span><span class="preprocessor">#ifdef _OPENMP</span></div>
<div class="line"><span class="lineno"> 330</span><span class="preprocessor">#pragma omp for</span></div>
@@ -397,13 +408,8 @@ Here is the call graph for this function:</div>
<div class="line"><span class="lineno"> 342</span> kohonen_som_tracer(X, &amp;W, 0.01); <span class="comment">// train the SOM</span></div>
<div class="line"><span class="lineno"> 343</span> <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gae0208548f8b393528e5db01717e88e67">save_nd_data</a>(<span class="stringliteral">&quot;w22.csv&quot;</span>, W); <span class="comment">// save the resultant weights</span></div>
<div class="line"><span class="lineno"> 344</span>}</div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a53082f2e5bacec40266499da4547309a"><div class="ttname"><a href="#a53082f2e5bacec40266499da4547309a">test_lamniscate</a></div><div class="ttdeci">void test_lamniscate(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:277</div></div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d9/d49/kohonen__som__trace_8cpp_a0283886819c7c140a023582b7269e2d0_cgraph.svg" width="543" height="212"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="akohonen__som__trace_8cpp_html_a53082f2e5bacec40266499da4547309a"><div class="ttname"><a href="#a53082f2e5bacec40266499da4547309a">test_lamniscate</a></div><div class="ttdeci">void test_lamniscate(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00277">kohonen_som_trace.cpp:277</a></div></div>
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<div class="line"> &quot;w32.csv&quot; title &quot;w2&quot;</div>
</div><!-- fragment --><p> <img src="https://raw.githubusercontent.com/TheAlgorithms/C-Plus-Plus/docs/images/machine_learning/kohonen/test3.svg" alt="Sample execution
output" style="pointer-events: none;" class="inline"/> </p>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00414">414</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 414</span> {</div>
<div class="line"><span class="lineno"> 415</span> <span class="keywordtype">int</span> j = 0, <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = 200;</div>
<div class="line"><span class="lineno"> 416</span> <span class="keywordtype">int</span> features = 3;</div>
<div class="line"><span class="lineno"> 417</span> <span class="keywordtype">int</span> num_out = 20;</div>
<div class="line"><span class="lineno"> 418</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; X(N);</div>
<div class="line"><span class="lineno"> 419</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;std::valarray&lt;double&gt;</a>&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 420</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/algorithm/max.html">std::max</a>(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 418</span> std::vector&lt;std::valarray&lt;double&gt;&gt; X(N);</div>
<div class="line"><span class="lineno"> 419</span> std::vector&lt;std::valarray&lt;double&gt;&gt; W(num_out);</div>
<div class="line"><span class="lineno"> 420</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; std::max(num_out, N); i++) {</div>
<div class="line"><span class="lineno"> 421</span> <span class="comment">// loop till max(N, num_out)</span></div>
<div class="line"><span class="lineno"> 422</span> <span class="keywordflow">if</span> (i &lt; N) { <span class="comment">// only add new arrays if i &lt; N</span></div>
<div class="line"><span class="lineno"> 423</span> X[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 423</span> X[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 424</span> }</div>
<div class="line"><span class="lineno"> 425</span> <span class="keywordflow">if</span> (i &lt; num_out) { <span class="comment">// only add new arrays if i &lt; num_out</span></div>
<div class="line"><span class="lineno"> 426</span> W[i] = <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray&lt;double&gt;</a>(features);</div>
<div class="line"><span class="lineno"> 426</span> W[i] = std::valarray&lt;double&gt;(features);</div>
<div class="line"><span class="lineno"> 427</span> </div>
<div class="line"><span class="lineno"> 428</span><span class="preprocessor">#ifdef _OPENMP</span></div>
<div class="line"><span class="lineno"> 429</span><span class="preprocessor">#pragma omp for</span></div>
@@ -461,13 +469,8 @@ Here is the call graph for this function:</div>
<div class="line"><span class="lineno"> 441</span> kohonen_som_tracer(X, &amp;W, 0.01); <span class="comment">// train the SOM</span></div>
<div class="line"><span class="lineno"> 442</span> <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gae0208548f8b393528e5db01717e88e67">save_nd_data</a>(<span class="stringliteral">&quot;w32.csv&quot;</span>, W); <span class="comment">// save the resultant weights</span></div>
<div class="line"><span class="lineno"> 443</span>}</div>
<div class="ttc" id="akohonen__som__trace_8cpp_html_a7154fe319e6033485a8a6cd6f0d8932d"><div class="ttname"><a href="#a7154fe319e6033485a8a6cd6f0d8932d">test_3d_classes</a></div><div class="ttdeci">void test_3d_classes(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> kohonen_som_trace.cpp:359</div></div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d9/d49/kohonen__som__trace_8cpp_a6d0455dd5c30adda100e95f0423c786e_cgraph.svg" width="546" height="236"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="akohonen__som__trace_8cpp_html_a7154fe319e6033485a8a6cd6f0d8932d"><div class="ttname"><a href="#a7154fe319e6033485a8a6cd6f0d8932d">test_3d_classes</a></div><div class="ttdeci">void test_3d_classes(std::vector&lt; std::valarray&lt; double &gt; &gt; *data)</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00359">kohonen_som_trace.cpp:359</a></div></div>
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<tr>
<td class="memname">void test_3d_classes </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>&lt; <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray</a>&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td class="paramtype">std::vector&lt; std::valarray&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td></td>
</tr>
</table>
@@ -500,21 +503,23 @@ Here is the call graph for this function:</div>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00359">359</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 359</span> {</div>
<div class="line"><span class="lineno"> 360</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>-&gt;size();</div>
<div class="line"><span class="lineno"> 361</span> <span class="keyword">const</span> <span class="keywordtype">double</span> R = 0.1; <span class="comment">// radius of cluster</span></div>
<div class="line"><span class="lineno"> 362</span> <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><span class="lineno"> 363</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_classes = 8;</div>
<div class="line"><span class="lineno"> 364</span> <span class="keyword">const</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;const std::array&lt;double, 3&gt;</a>, num_classes&gt; centres = {</div>
<div class="line"><span class="lineno"> 364</span> <span class="keyword">const</span> std::array&lt;const std::array&lt;double, 3&gt;, num_classes&gt; centres = {</div>
<div class="line"><span class="lineno"> 365</span> <span class="comment">// centres of each class cluster</span></div>
<div class="line"><span class="lineno"> 366</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({.5, .5, .5}), <span class="comment">// centre of class 0</span></div>
<div class="line"><span class="lineno"> 367</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({.5, .5, -.5}), <span class="comment">// centre of class 1</span></div>
<div class="line"><span class="lineno"> 368</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({.5, -.5, .5}), <span class="comment">// centre of class 2</span></div>
<div class="line"><span class="lineno"> 369</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({.5, -.5, -.5}), <span class="comment">// centre of class 3</span></div>
<div class="line"><span class="lineno"> 370</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({-.5, .5, .5}), <span class="comment">// centre of class 4</span></div>
<div class="line"><span class="lineno"> 371</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({-.5, .5, -.5}), <span class="comment">// centre of class 5</span></div>
<div class="line"><span class="lineno"> 372</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({-.5, -.5, .5}), <span class="comment">// centre of class 6</span></div>
<div class="line"><span class="lineno"> 373</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;double, 3&gt;</a>({-.5, -.5, -.5}) <span class="comment">// centre of class 7</span></div>
<div class="line"><span class="lineno"> 366</span> std::array&lt;double, 3&gt;({.5, .5, .5}), <span class="comment">// centre of class 0</span></div>
<div class="line"><span class="lineno"> 367</span> std::array&lt;double, 3&gt;({.5, .5, -.5}), <span class="comment">// centre of class 1</span></div>
<div class="line"><span class="lineno"> 368</span> std::array&lt;double, 3&gt;({.5, -.5, .5}), <span class="comment">// centre of class 2</span></div>
<div class="line"><span class="lineno"> 369</span> std::array&lt;double, 3&gt;({.5, -.5, -.5}), <span class="comment">// centre of class 3</span></div>
<div class="line"><span class="lineno"> 370</span> std::array&lt;double, 3&gt;({-.5, .5, .5}), <span class="comment">// centre of class 4</span></div>
<div class="line"><span class="lineno"> 371</span> std::array&lt;double, 3&gt;({-.5, .5, -.5}), <span class="comment">// centre of class 5</span></div>
<div class="line"><span class="lineno"> 372</span> std::array&lt;double, 3&gt;({-.5, -.5, .5}), <span class="comment">// centre of class 6</span></div>
<div class="line"><span class="lineno"> 373</span> std::array&lt;double, 3&gt;({-.5, -.5, -.5}) <span class="comment">// centre of class 7</span></div>
<div class="line"><span class="lineno"> 374</span> };</div>
<div class="line"><span class="lineno"> 375</span> </div>
<div class="line"><span class="lineno"> 376</span><span class="preprocessor">#ifdef _OPENMP</span></div>
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<div class="line"><span class="lineno"> 378</span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="lineno"> 379</span> <span class="keywordflow">for</span> (i = 0; i &lt; <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a>; i++) {</div>
<div class="line"><span class="lineno"> 380</span> <span class="keywordtype">int</span> cls =</div>
<div class="line"><span class="lineno"> 381</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/random/rand.html">std::rand</a>() % num_classes; <span class="comment">// select a random class for the point</span></div>
<div class="line"><span class="lineno"> 381</span> std::rand() % num_classes; <span class="comment">// select a random class for the point</span></div>
<div class="line"><span class="lineno"> 382</span> </div>
<div class="line"><span class="lineno"> 383</span> <span class="comment">// create random coordinates (x,y,z) around the centre of the class</span></div>
<div class="line"><span class="lineno"> 384</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][0] = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(centres[cls][0] - R, centres[cls][0] + R);</div>
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<div class="line"><span class="lineno"> 391</span><span class="comment"> */</span></div>
<div class="line"><span class="lineno"> 392</span> }</div>
<div class="line"><span class="lineno"> 393</span>}</div>
<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a></div></div>
<div class="ttc" id="ahash__search_8cpp_html_a6e1a77282bc65ad359d753d25df23243"><div class="ttname"><a href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a></div><div class="ttdeci">int data[MAX]</div><div class="ttdoc">test data</div><div class="ttdef"><b>Definition</b> hash_search.cpp:24</div></div>
<div class="ttc" id="arand_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/rand.html">std::rand</a></div><div class="ttdeci">T rand(T... args)</div></div>
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<div class="ttc" id="ahash__search_8cpp_html_a6e1a77282bc65ad359d753d25df23243"><div class="ttname"><a href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a></div><div class="ttdeci">int data[MAX]</div><div class="ttdoc">test data</div><div class="ttdef"><b>Definition</b> <a href="../../d1/df3/hash__search_8cpp_source.html#l00024">hash_search.cpp:24</a></div></div>
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<td class="memname">void test_circle </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>&lt; <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray</a>&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td class="paramtype">std::vector&lt; std::valarray&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td></td>
</tr>
</table>
@@ -574,6 +572,8 @@ y &amp;=&amp; r\sin\theta
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00196">196</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 196</span> {</div>
<div class="line"><span class="lineno"> 197</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>-&gt;size();</div>
<div class="line"><span class="lineno"> 198</span> <span class="keyword">const</span> <span class="keywordtype">double</span> R = 0.75, dr = 0.3;</div>
@@ -587,18 +587,11 @@ y &amp;=&amp; r\sin\theta
<div class="line"><span class="lineno"> 206</span> <span class="keywordflow">for</span> (i = 0; i &lt; <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a>; i++) {</div>
<div class="line"><span class="lineno"> 207</span> <span class="keywordtype">double</span> r = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(a_r, b_r); <span class="comment">// random radius</span></div>
<div class="line"><span class="lineno"> 208</span> <span class="keywordtype">double</span> theta = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(a_t, b_t); <span class="comment">// random theta</span></div>
<div class="line"><span class="lineno"> 209</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][0] = r * <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/cos.html">cos</a>(theta); <span class="comment">// convert from polar to cartesian</span></div>
<div class="line"><span class="lineno"> 210</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][1] = r * <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/sin.html">sin</a>(theta);</div>
<div class="line"><span class="lineno"> 209</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][0] = r * cos(theta); <span class="comment">// convert from polar to cartesian</span></div>
<div class="line"><span class="lineno"> 210</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][1] = r * sin(theta);</div>
<div class="line"><span class="lineno"> 211</span> }</div>
<div class="line"><span class="lineno"> 212</span>}</div>
<div class="ttc" id="acos_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/cos.html">std::cos</a></div><div class="ttdeci">T cos(T... args)</div></div>
<div class="ttc" id="asin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/sin.html">std::sin</a></div><div class="ttdeci">T sin(T... args)</div></div>
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<td class="memname">void test_lamniscate </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a>&lt; <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/valarray.html">std::valarray</a>&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td class="paramtype">std::vector&lt; std::valarray&lt; double &gt; &gt; *</td> <td class="paramname"><span class="paramname"><em>data</em></span></td><td>)</td>
<td></td>
</tr>
</table>
@@ -631,6 +624,8 @@ y &amp;=&amp; \delta y + \frac{\sin(2\theta)}{2}
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html#l00277">277</a> of file <a class="el" href="../../d9/d49/kohonen__som__trace_8cpp_source.html">kohonen_som_trace.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 277</span> {</div>
<div class="line"><span class="lineno"> 278</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="../../d8/dab/sparse__table_8cpp.html#a10f3ffb3f6f7e1b83d556b9c8de89a5d">N</a> = <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>-&gt;size();</div>
<div class="line"><span class="lineno"> 279</span> <span class="keyword">const</span> <span class="keywordtype">double</span> dr = 0.2;</div>
@@ -643,16 +638,11 @@ y &amp;=&amp; \delta y + \frac{\sin(2\theta)}{2}
<div class="line"><span class="lineno"> 286</span> <span class="keywordtype">double</span> dx = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(-dr, dr); <span class="comment">// random change in x</span></div>
<div class="line"><span class="lineno"> 287</span> <span class="keywordtype">double</span> dy = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(-dr, dr); <span class="comment">// random change in y</span></div>
<div class="line"><span class="lineno"> 288</span> <span class="keywordtype">double</span> theta = <a class="code hl_function" href="../../d9/d66/group__machine__learning.html#gaf5ce14f026d6d231bef29161bac2b485">_random</a>(0, M_PI); <span class="comment">// random theta</span></div>
<div class="line"><span class="lineno"> 289</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][0] = dx + <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/cos.html">cos</a>(theta); <span class="comment">// convert from polar to cartesian</span></div>
<div class="line"><span class="lineno"> 290</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][1] = dy + <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/math/sin.html">sin</a>(2. * theta) / 2.f;</div>
<div class="line"><span class="lineno"> 289</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][0] = dx + cos(theta); <span class="comment">// convert from polar to cartesian</span></div>
<div class="line"><span class="lineno"> 290</span> <a class="code hl_variable" href="../../d1/df3/hash__search_8cpp.html#a6e1a77282bc65ad359d753d25df23243">data</a>[0][i][1] = dy + sin(2. * theta) / 2.f;</div>
<div class="line"><span class="lineno"> 291</span> }</div>
<div class="line"><span class="lineno"> 292</span>}</div>
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