Update again.
Very close now. I succeeded in creating a table like table 3 above by using two variables. The first is *Month = RunningSum(Count([Month];[Product])) which I threw an if statement around so that values less than 10 came back as 01, 02 instead of 1, 2 etc. Then the second variable was *Month2 = [*Month] in([Product];[Model]). I put *Month2 in my table and was then able to take away the original Month variable and keep all my data points. So, I threw this onto the X-axis of my chart:
The lines all start at the Y-axis! The values for the X-axis are all #Multivalue though, but that's not really a problem because like I said earlier, it's comparing the slopes that is of interest. The problem is that the lines continue on flat (at the value of the latest data point) when all of the months for that product have run out.
I've been stuck at this point for a while now :/ Anyone out there have any ideas?
Thanks in advance.
Darrel