selection of items in a Marix

Hello everybody,

I need some help to select sevral lign in a matrix using a logical test and then create a vector which wwould summarize all selected items.

To be more accurate, my problem is to select the right "spring" cosidering given deflexion and maximum reaction load within this loading configuration. I already creat a fonction which calculat the reaction load for a given deflexion and spring model ( equ_paulstra_reactionload("matrix of the approximated polynomial coeficient which give reaction load in function of the deflexion","deflexion","ligne of the considered model" ). Then I would create a fonction which test each spring and put them in a vector using there reference.

I join my work done so far.

Thanks a lot for your elp,

regards,

Mathieu STAUCH