Is there a way that I can perform calculations on JUST the records in a found set?

Here's what I want to do: input a begindate and an enddate into their respective global fields. Input a few user-defineable constants. Run a script to filter out everything before and after those dates, leaving behind only the range of dates between them. I'm fine with the loop to filter out to just the records i want, but then I don't know how to perform calcs off of just those records.

This will allow me to create custom reports on a per week basis, or a per month, or whatever range of days I specify.

I suspect I might be going about this in the wrong manner. Should I not be omitting the records I don't want?

Yeah, no problem. You want to use a summary field, and not a calc field. The summary field then has to be used within a sub summary part on a layout. It will only work when it's sorted and it only summarizes the found set.

--Tripod