Good afternoon. I am writing to request your help again. It turns out that I have a matrix called "TT_XY" that contains some heights in the first column, while in the other second column there are elements that have associated heights. As you can deduce, for each node there is corresponding height (for that reason there are several nodes that have the same height). What I need is to eliminate the repeated nodes along with their corresponding height (column 1) and leave only a single node of each type. Below I show how my matrix is currently configured. Thank you.