2 Replies Latest reply on Mar 28, 2015 11:38 AM by Rahul Upadhye

    Seasonality calculation

    Jonathan Squires

      Hello I have an issue I am trying to calculate a seasonality forecast in tableau.

       

      I have a set of percentages for each month for a year,  and in a different data set sales per months for varying time periods (could start in Month 1 could start later) I am trying to apply the seasonality % to the months where I have null data in the sales data set.

       

      Does anyone have any ideas how I could achieve this, as soon as I link the two data sets it acts as an inner join and I loose the months where we don't have sales data.