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<p class="MsoNormal">Hello David,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After reading the Matlab documentation page, it seems pretty simple to implement using Scilab : and $ symbols:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#B01813">function</span><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<span style="color:#4A55DB">[</span><b><span style="color:#834310">pks</span></b><span style="color:black">,
</span><b><span style="color:#834310">locs</span></b><span style="color:#4A55DB">]</span><span style="color:#5C5C5C">=</span><u><span style="color:black">findpeaks</span></u><span style="color:#4A55DB">(</span><b><span style="color:#834310">data</span></b><span style="color:#4A55DB">)</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<span style="color:black">ii</span> <span style="color:#5C5C5C">=</span> <span style="color:#32B9B9">
find</span><span style="color:#4A55DB">(</span><span style="color:black">d</span><span style="color:#4A55DB">(</span><span style="color:rosybrown">1</span><span style="color:#FFAA00">:$</span><span style="color:#5C5C5C">-</span><span style="color:rosybrown">2</span><span style="color:#4A55DB">)</span>
<span style="color:#5C5C5C"><</span> <span style="color:black">d</span><span style="color:#4A55DB">(</span><span style="color:rosybrown">2</span><span style="color:#FFAA00">:$</span><span style="color:#5C5C5C">-</span><span style="color:rosybrown">1</span><span style="color:#4A55DB">)</span>
<span style="color:#5C5C5C">&</span> <span style="color:black">d</span><span style="color:#4A55DB">(</span><span style="color:rosybrown">2</span><span style="color:#FFAA00">:$</span><span style="color:#5C5C5C">-</span><span style="color:rosybrown">1</span><span style="color:#4A55DB">)</span>
<span style="color:#5C5C5C">>=</span> <span style="color:black">d</span><span style="color:#4A55DB">(</span><span style="color:rosybrown">3</span><span style="color:#FFAA00">:$</span><span style="color:#4A55DB">))</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<b><span style="color:#834310">pks</span></b> <span style="color:#5C5C5C">=</span>
<b><span style="color:#834310">data</span></b><span style="color:#4A55DB">(</span><span style="color:black">ii</span><span style="color:#5C5C5C">+</span><span style="color:rosybrown">2</span><span style="color:#4A55DB">)</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<b><span style="color:#834310">locs</span></b> <span style="color:#5C5C5C">=</span>
<span style="color:black">ii</span> <span style="color:#5C5C5C">+</span> <span style="color:rosybrown">
2</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#B01813">endfunction</span><span style="font-size:11.5pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black">data</span><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<span style="color:#5C5C5C">=</span> <span style="color:#4A55DB">[</span><span style="color:rosybrown">25</span>
<span style="color:rosybrown">8</span> <span style="color:rosybrown">15</span> <span style="color:rosybrown">
5</span> <span style="color:rosybrown">6</span> <span style="color:rosybrown">10</span>
<span style="color:rosybrown">10</span> <span style="color:rosybrown">3</span> <span style="color:rosybrown">
1</span> <span style="color:rosybrown">20</span> <span style="color:rosybrown">7</span><span style="color:#4A55DB">]</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#AE5CB0">plot</span></u><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black">data</span><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#4A55DB">)</span><span style="font-size:11.5pt;font-family:"Monospaced",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#4A55DB">[</span><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black">pks,locs</span><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#4A55DB">]</span><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<span style="color:#5C5C5C">=</span> <u><span style="color:#AE5CB0">findpeaks</span></u><span style="color:#4A55DB">(</span><span style="color:black">data</span><span style="color:#4A55DB">)</span><span style="color:black">;</span><o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#AE5CB0">plot</span></u><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:#4A55DB">(</span><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black">locs,</span><span style="font-size:11.5pt;font-family:"Monospaced",serif">
<span style="color:black">pks,</span> <span style="color:rosybrown">'xr'</span><span style="color:#4A55DB">)</span><span style="color:black">;<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black">Note: using oct2py and pims might also be an option for simple cases but these wrappers are complex to use and data need to be copied at language boundaries.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Monospaced",serif">Clément</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> users <users-bounces@lists.scilab.org> <b>On Behalf Of
</b>CHEZE David 227480<br>
<b>Sent:</b> Tuesday, March 16, 2021 2:53 PM<br>
<b>To:</b> Users mailing list for Scilab <users@lists.scilab.org><br>
<b>Subject:</b> [Scilab-users] find and locate local maxima<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="FR">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’m looking for function that could find and locate every local maxima of any discrete time signal (timeseries), similar to Matlab or Octave function findpeaks(), scipy find_peaks(). Is anyone aware if something similar
is already available in Scilab ? (I already browsed a little bit and it don’t seem so…)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">If not in Scilab macros, any hint to use the Octave or scipy function directly from Scilab?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">More globally it seems that Octave Forge could be linked with Python (from oct2py import octave<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"># Load the Octage-Forge signal package.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">octave.eval("pkg load signal")), does someone ever tried to bridge similarly in Scilab ? oct2sci<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:FR">David
</span><span lang="FR" style="mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR"><o:p> </o:p></span></p>
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