I have a simple (though large) table of N rows (simulations in this case) x M variables (which characterize particular simulations; there are about 20 such variables). There are about 900 rows (simulations). To be viewed/analyzed the rows need to be combined into triplets. Thus there are about 300 triplets. These triplets should be easy to form because particular simulations are members of a particular triplet if and only if they share a particular value for a particular variable.
(This could equally well be phrased, and might be simpler to understand, if the rows were to form natural "pairs" rather than triplets.)
How can I form these triplets with Tableau -- or filter & view the existing rows as if they were formed into these triplets.
Of course I could do this by a preliminary external step in which a program or script formed the triplets before entering Tableau but I am hoping that it can be done with facilities of Tableau.
p.s. I framed this kind of abstractly. To make it more concrete:
The simulations are weather predictions of the tracks of hurricanes. Each triplet is made up of 3 separate predictions for the SAME hurricane (using 3 different prediction models.) I need to coalesce the individual tracks into these triplets so that I can compare the three prediction models.