[RDF] How rpas calculate the spread ratio of a measure

Hi All,

In my RDF configuration I have a measure was set RATIO for defspread property. I looked for some definition this type property, but I didn't find any explanation about this.

My first doubt is: "The ratio property is the same of prop"?

Otherwise, If I set a value for a intersection product x company x week where the company intersection is the high level of loc hierarchy (we have 385 stores), how RDF calculate this spread's ratio in this intersection product x store x week.

When I disaggregate  the measure to the base intersection (product x store x week), the measure's value have same differences comparing a store which other store with the same product and week. RPAS checks the participation of each store in the historical data to calculate the spread ratio?