5 Replies Latest reply: Nov 7, 2012 4:39 PM by Stefan Wühl RSS

    Expression issue



      I have a plot-chart with 2 dimensions :   MONTH  ,  YEAR

      and one expression  :      Sum(   Value) 


      My objective is to change the expression to transform it in an index as

      Sum( Value) /  Sum(  the value of first month) 


      How to write the denominator taking account the first month for each years in my expressions


      Thanks for your help