topic Re: Clarification on set analysis use of P() for current dimension value in App Development

Clarification on set analysis use of P() for current dimension value

daniel_dalnekoff — Thu, 23 Aug 2018 14:23:09 GMT

Hello community!

I've gotten myself stuck with set analysis - I think in my use case I need to use the P(), but it seems like I am just not quite grasping how to accomplish it.

Overview - In my data I have what is basically a list of what customers have purchased. I would like to summarize this by displaying how much customers have spent (in total, and avg per customer) on a given type of product (for example, Milk and Cheese = "Dairy") when they have purchased product ABC (ABC is technically any of the values for the dimension product).

In my attached file, I have a sample of the data, and an idea on what I am trying to accomplish...it is roughly something like this:

Data (Purchases)

Customer	Product	Type of Product	Amount Spent
A	Milk	Dairy	10
A	Potatoes	Produce	25
A	Cheese	Dairy	10
B	Milk	Dairy	15
B	Oranges	Produce	35

Desired output:

Note: the way I have been thinking about this is that this is a table visualization, with the Product column populated from the dimension "Product" from my sample data, and the "For customers who bought this..." columns, I am writing a set expression for the Types I want to include that is something like this:

sum( {< [Product] =, [Type of Product] = [<Value of desired type of product, ie/ Dairy>] >} Amount Spent)

It feels like I need something like:

sum( {< [Product] =, [Type of Product] = [<Value of desired type of product, ie/ Dairy>], Customer = p( {< [Type of Product] = [<Value of desired type of product, ie/ Dairy>] >} Customer) >} Amount Spent)

Product	For customers who bought this product, how much did they spend on Dairy?	For customers who bought this product, how much did they spend on Produce?
Milk	10+10+15	25+35
Oranges	10+10+15	35
Cheese	10+10	25

For some reason, I can't quite get the results I want. Any support would be appreciated! My attached excel file has more detail/a more comprehensive example....

Re: Clarification on set analysis use of P() for current dimension value

ogautier62 — Thu, 23 Aug 2018 15:02:06 GMT

Hi,

I think it's correct with your desired output :

P() is not convenient because it's related with selection,

here is aggr used

regards

Re: Clarification on set analysis use of P() for current dimension value

PabloTrevisan — Thu, 23 Aug 2018 15:12:32 GMT

Hi Dan, you could use this expression.
Once for each Type

example:

IF(sum({$<Type ={'Dairy'} >} [Amount Spent]) > '0',SUM({<Type = {'Dairy'}>}[Amount Spent]),0)

IF(sum({$<Type ={'Bakery'} >} [Amount Spent]) > '0',SUM({<Type = {'Bakery'}>}[Amount Spent]),0)

Re: Clarification on set analysis use of P() for current dimension value

daniel_dalnekoff — Mon, 27 Aug 2018 01:54:02 GMT

Olivier, Pablo - thank you both for your replies. Both of your solutions did correctly solve the example I provided, and these were helpful solutions in achieving my goal. My exact scenario was a bit more complex than I had the example (as I realized while working through it) to be, but I was able to leverage what you outlined to solve my challenge.

thanks again,

Re: Clarification on set analysis use of P() for current dimension value

andrey_krylov — Mon, 27 Aug 2018 06:49:37 GMT

Hi, Dan, try this expression for Dairy

Sum(Aggr(Sum(TOTAL < Customer > Aggr(Sum({< Type = {'Dairy'} >} [Amount Spent]), Customer) ), Product, Customer, Type))