Hello -

We are doing a forecasting exercise. We have the following source data for a series of months.

Start_Count

Type1_Loss_rate

Type2_Loss_rate

The loss rates are historic, and we want to multiply them against the start count in order to project the losses by type in the period.

Type1_losses_projected = [Start_count] * Type1_Loss_rate

Type2_losses_projected = [Start_count] * Type2_Loss_rate

This is straightforward and it works up to this point. What we want to do next is calculate the total losses

Total_Losses_projected= [Type1_losses_projected] + [Type1_losses_projected]

Here is where we get a message that there is a problem/limit with source data files, and when we query on the error, we get this message -

**Check for nested equations.**** **Check your workbook for custom calculations that contain other calculations that reference a secondary data source, or custom calculations that reference a calculation in the primary data source that references a secondary data source. If these types of calculations are being used in your workbook, modify the calculation so it does not use nested equations.

We are, of course,calculating a variable with a previously calculated variable - but I am not clear on why that presents a problem. Please advise.

Tim, John

This content has been marked as final.
Show 0 replies

Create your Account

Become a Viz Whiz on the Forums!

Support the Community and master Tableau.