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<p><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Evstr(resu(k)) is a paste error - I’m reading an asci file
</span><span lang="EN-US" style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Without using a loop, I would like to get the n th component of the vector resu(k) … k is no more no less than the index of specific lines I’m trying to get …<o:p></o:p></span></p>
<p><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Through your answers I’m understanding that I’m thinking on a bad way<o:p></o:p></span></p>
<p><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Paul<o:p></o:p></span></p>
<p><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p></o:p></p>
<p><b><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">EXPORT CONTROL :
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<p class="MsoNormal"><a name="_____replyseparator"></a><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">De :</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> users [mailto:users-bounces@lists.scilab.org]
<b>De la part de</b> antoine monmayrant<br>
<b>Envoyé :</b> vendredi 1 juin 2018 11:55<br>
<b>À :</b> users@lists.scilab.org<br>
<b>Objet :</b> [EXTERNAL] Re: [Scilab-users] submatrix issue<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p>Hello,<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>What do you wan to achieve exactly?<br>
As Stéphane pointed out, the sizes are not the same.<br>
When you assign something like:<o:p></o:p></p>
<p>A=B;<o:p></o:p></p>
<p>You have two different situations:<o:p></o:p></p>
<p>1) size(A)==size(B)<br>
2) size(B)=[1,1]<o:p></o:p></p>
<p>In the first case, you assign each element of B to each element of A. In the latter case (which corresponds to your commented line), B is just a scalar that gets assigned to each element of A.<br>
<br>
In the current situation, you are neither in case 1) nor in case 2).<br>
As you have size(NodesMatrix2(i,j+1))=[300,300] and size(resu(k))=[300,1], you might want to replicate resu(k) 300 times and fill NodesMatrix2(i,j+1) with these 300 copies. If this what you want to do, here is the code:<o:p></o:p></p>
<p>NodesMatrix2(i,j+1)=resu(k)*ones(1,300);<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>By the way, why do you use "evstr(resu(k))" instead of "resu(k)"?<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>Antoine<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Le 01/06/2018 à 11:45, Stéphane Mottelet a écrit :<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">It cannot work since <br>
<br>
--> size(k) <br>
ans = <br>
<br>
300. 1. <br>
<br>
<br>
--> length(i)*length(j) <br>
ans = <br>
<br>
90000. <br>
<br>
i.e. NodesMatrix2(i,j+1) has 90000 elements and resu(k) has 300 <br>
<br>
S. <br>
<br>
Le 01/06/2018 à 11:07, Carrico, Paul a écrit : <br>
<br>
<o:p></o:p></p>
<p class="MsoNormal"><br>
Dear all <br>
<br>
I’ve a submatrix issue on the following example, and I do not remember (or understand) why : how can I do this ?
<br>
<br>
(the goal is to extract and to store within a matrix results from an Ascii file) <br>
<br>
Thanks for any help <br>
<br>
Paul <br>
<br>
############################################################### <br>
<br>
mode(0) <br>
<br>
clearall <br>
<br>
StartNodeLine= 1; <br>
<br>
NumberOfNodes= 100; <br>
<br>
DimCoordinates= 3; <br>
<br>
resu= rand(1000,1); <br>
<br>
tic(); <br>
<br>
NodesMatrix2= zeros(NumberOfNodes,DimCoordinates+1); <br>
<br>
i= [1 : NumberOfNodes]'; NodesMatrix2(i,1) = _evstr_(resu(StartNodeLine + (DimCoordinates+2)*(i-1)+2));
<br>
<br>
i= [1 : NumberOfNodes]'.*.ones(1,DimCoordinates)'; <br>
<br>
j= ones(1,NumberOfNodes)'.*.[1 : DimCoordinates]'; <br>
<br>
k= StartNodeLine + (DimCoordinates+2)*(i-1)+3+j; <br>
<br>
a= _evstr_(resu(k)); <br>
<br>
NodesMatrix2(i,j+1)= _evstr_(resu(k)); /// does not work/ <br>
<br>
///NodesMatrix2(i,j+1) = 1; // work(basic assignement)/ <br>
<br>
Duration2= toc() <br>
<br>
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