Use a "count of" summary field to count your records. Of course, this counts all your records, not just those of one specific size, but then you can do this:
Add a sub summary part to your layout "when sorted by" Shirt size.
Put the summary field inside this sub summary part.
enter browse mode and sort your records by Shirt Size (sort order must include the same field as what you selected for the sub summary part.)
The sub summary part now displays a sub total for each shirt size.
You can keep the body layout part if you want to list each record with it's subtotal or you can remove the layout part and get just the sub totals.
This works and solves my immediate need but it lacks a bit of...informational elegance?
For example: If I did remove the Body, the sub summary would give me totals by size but not the size itself.
So...how could I indicate in the subsummary part that
And is there a way to automatically add the new size to that list when a new size comes into play?
If not, I'm good, but Filemaker has so many wonderful functions I feel that this one is out there.
You would add the size field to the sub summary part as well so that you see the size and the count in the sub summary part.
Since the size is data entered into the same field each time, it will be automatically included in this report the first time you add a record to the report's found set with this value.
Thank you, PhilModJunk!