Okay, I’m not good enough at R to easily parse that, let me try popping back to just a table and a list to try to work with the example. So here you’re using letters instead of numbers and saying the list is just A-X in order, [A, B, C, D, E, F, G, H...]. We’d parse that list as the following table such that the thetas are nested within chain which are nested within iteration like so:
| iteration | chain | theta.1 | theta.2 |
|---|---|---|---|
| 1 | 1 | A | B |
| 1 | 2 | C | D |
| 2 | 1 | E | F |
| 2 | 2 | G | H |
Is that right?