Franck Nadaud a écrit&nbsp;: <blockquote cite="mid4013.193.51.120.31.1179851131.squirrel@www.centre-cired.fr" type="cite">   <pre wrap="">Dear listers, greetings from Paris !<br><br>I would like to submit a question relative to a script ...</pre> </blockquote> <br> I'm not yet very familiar with matrix but instead of using a matrix, try to create two series -- a_vect and p_vect (such as &lt;genr series a_vect&gt;-- and you can join both of them in a matrix after exiting the loop !  That's what I do at least at it works!<br> <br> Bien à toi!<br> Artur<br> <p>&#32;


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