About dynamic aggregation and using model

Question

I want to use model to realize dynamic aggregation.
for example, I have a dimension named "product",it contains some values like :
"apple" "orange" "beer" "beef" "bullfrog" "coffee"....
I also have a "wastage" measure base on this dimension.
I sometimes wanna see fruit wastage(fruit=apple+orange),sometimes breakfast food wastage(breakfast=apple+beef+coffee),sometimes other aggregation.
how can I solve this problem? thanks for any suggestion.

Answer 1

There are two answers depending on the scoping that
you want the members to have. Both cases use the
same model:
DFN Foodmod MODEL
MODEL
DIMENSION product
FRUIT = AGGREGATION('APPLE' 'ORANGE')
BREAKFAST = AGGREGATION('APPLE' 'BEEF' 'COFFEE')
END
If you want the dynamic calculations to be persistent
across sessions then you should make the model part
of the definition of the aggmap.
DFN Foodmap AGGMAP
AGGMAP
Relation Food.Food
Model Foodmod PRECOMPUTE(na)
END
If you just want the positions to last for the session
you can dynamically add a model to a pre-existing
aggmap.
DFN Foodmap AGGMAP
AGGMAP
Relation Food.Food
END
CONSIDER Foodmap
AGGMAP ADD Foodmod