4 Replies Latest reply: Aug 17, 2012 11:24 AM by chaseswim RSS

    aggr() function help

      I am new to using the aggr() function, but I think it can help me.


      I am trying to come up with the sum(BO) but only for when XSTOCK=S and XSTOCK=N. I attatched a picture of what im working on.


      Do you guys have any ideas for an expression that will work?