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<div class="moz-cite-prefix">Bonjour,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Le 26/05/2020 à 12:23, AUZANNEAU
Fabrice a écrit :<br>
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cite="mid:39E6377A1FCCBC46BC9457F416E580DA506CDDAE@EXDAG0-A3.intra.cea.fr">
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<p class="MsoPlainText">Bonjour<o:p></o:p></p>
<p class="MsoPlainText">J’utilise des listes dans un code Scilab
et je rencontre un problème pour les modifier dans une
fonction. Un exemple simple :<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black;mso-fareast-language:FR"
lang="EN-US">a</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US">
<span style="color:#5C5C5C">=</span> <span
style="color:#32B9B9">list</span><span
style="color:#4A55DB">()</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#B01813;mso-fareast-language:FR"
lang="EN-US">function</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US">
<u><span style="color:black">test</span></u><span
style="color:#4A55DB">()</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US">
<span style="color:black">a</span><span
style="color:#4A55DB">(</span><span
style="color:rosybrown">2</span><span
style="color:#4A55DB">)</span>
<span style="color:#5C5C5C">=</span> <span
style="color:#4A55DB">[</span><span
style="color:rosybrown">3</span><span style="color:black">,</span><span
style="color:rosybrown">4</span><span
style="color:#4A55DB">]</span><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#B01813;mso-fareast-language:FR"
lang="EN-US">endfunction</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black;mso-fareast-language:FR"
lang="EN-US">a</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB;mso-fareast-language:FR"
lang="EN-US">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:rosybrown;mso-fareast-language:FR"
lang="EN-US">1</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB;mso-fareast-language:FR"
lang="EN-US">)</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US">
<span style="color:#5C5C5C">=</span> <span
style="color:#4A55DB">[</span><span
style="color:rosybrown">1</span><span style="color:black">,</span><span
style="color:rosybrown">2</span><span style="color:black">,</span><span
style="color:rosybrown">4</span><span
style="color:#4A55DB">]</span><o:p></o:p></span></p>
<p class="MsoNormal"><u><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black;mso-fareast-language:FR"
lang="EN-US">test</span></u><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB;mso-fareast-language:FR"
lang="EN-US">()</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#32B9B9;mso-fareast-language:FR"
lang="EN-US">disp</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB;mso-fareast-language:FR"
lang="EN-US">(</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:black;mso-fareast-language:FR"
lang="EN-US">a</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;color:#4A55DB;mso-fareast-language:FR"
lang="EN-US">)</span><span
style="font-size:9.0pt;font-family:"Monospaced",serif;mso-fareast-language:FR"
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText">L’exécution donne ce message d’erreur :<o:p></o:p></p>
<p class="MsoPlainText">à la ligne 2 de la fonction test (
C:\Users\***\Desktop\list.sce ligne 10 )<o:p></o:p></p>
<p class="MsoPlainText">à la ligne 13 du fichier exécuté
C:\Users\***\Desktop\list.sce<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Sous-matrice incorrectement définie.</p>
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<p><br>
</p>
<p>Pour éviter l'erreur, il faut ajouter<br>
a = a<br>
dans la fonction, juste avant a(2) = ... : le 1er adressage de a
externe en lecture en crée une copie locale. C'est celle-ci qui
sera modifiée par a(2) = ..., et perdue en sortie de fonction.<br>
Pour la retourner dans l'environnement sans la faire figurer en
argument de sortie explicite de la fonction, utiliser<br>
a = return(a)<br>
</p>
<p>d'où : <br>
</p>
<pre style="font-family:Monospaced;font-style:normal;font-size:12.0;"><span style="color:rgb(176,24,19);">function</span> <span style="color:rgb(0,0,0);text-decoration:underline;">test</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(0,0,0);">a</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">a</span>
<span style="color:rgb(0,0,0);">a</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">2</span><span style="color:rgb(74,85,219);">)</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(74,85,219);">[</span><span style="color:rgb(188,143,143);">3</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">4</span><span style="color:rgb(74,85,219);">]</span>
<span style="color:rgb(0,0,0);">a</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(95,158,160);">return</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(176,24,19);">endfunction
</span></pre>
<p>Samuel</p>
<p><br>
</p>
<span style="color:rgb(176,24,19);"></span>
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