Is it possible to subtract two selectedmeasure in calculated group?

[shooyi]

Matrix is using a calculated group. A and B are two different measures. Is it possible to have a calculated item that does A-B?

[Wilson_]

Hello shooyi,

Are you looking for it to subtract A and B specifically? Does Measure = A - B not work? I must be missing something here!

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[shooyi]

Hi Wilson

I created a calculated group because I needed the same 5 custom calculations applied to whatever measure I drop in.

What is in the table is the YoY %. So A is the YoY growth for measure A and B is the YoY growth for measure B for a client defined time metric.

But I need A and B to able to be applied to the sum of any column.

Example :

A could be the sum(company_a_sales) or sum(company_a_units)

B could be the sum(company_b_sales) or sum(company_b_units)

What I was trying to do is the 5 custom calculations (client defined rolling metrics a, b, c, d, e) and have it use selectedmeasure() instead of creating 30 measures.

So I would be able to use :

rolling_metric_a - using selectedmeasure()

as opposed to

rolling_metric_a for each column

year	week	product	company_a_sales	company_a_units	company_b_sales	company_b_units	company_c_sales	company_c_units
1	4	xx	123	53	456	78	789	45
1	5	yy	321	35	654	87	987	54
2	4	xx	852	25	147	41	369	63
2	5	yy	963	63	753	35	159	15

This works just fine. Now I need to be able to subtract the two. So in the original post that is the rolling_metric_a applied to sum(company_a_sales) and sum(company_b_sales).

I now need the difference between the two.

Is it possible to create a calculated item that subtracts the two?