Expression

[Anonymous]

So I have a few measures that I would like to, I guess, merge to create a new one.  Basically I have a measure that gives total of all sales based on expression:

sum(aggr(sum(distinct(quantity*unit_price)), order_product_id)) +

SUM(aggr(sum({$<order_type={'refund'}>}distinct (refunded_product_discount_total/refunded_quantity*-1)*quantity), order_product_id))

I also have a date dimension that retrieves dates within last 60 days, with expression as follows:

if(floor([completed_date.autoCalendar.Date])>=num(today())-60 and floor([completed_date.autoCalendar.Date])<= num(today()),[completed_date.autoCalendar.Date],null())

I need to create a few of these, so any help or examples of set analysis with a time frame is appreciated.  Thanks in advance.