I have dates in columns and volume of bookings in rows. And Datasource in "Colour" for categories as shown below. I need to calculate several pairwise correlations e.g between OPA and CDS say. How would i do this?

not so obvious to me- we are volunteers here that come from a variety of backgrounds - not necessarily yours - My response does not relate to correlation - so if you post your workbook as a twbx I will look at what you doing

Thanks

Jim - Tableau Visionary