Manipulate variables with dependencies

Question

I have the following, simplified program:

import = {{"one", 1, 2, 3}, {"two", 4, 5}, {"three", 6, 7, 8, 9}};

Manipulate[
 s = Select[import, MemberQ[#, e] &];
 calc,
 {e, {"one", "two", "three"}},
 {calc, Rest[s[[1]]]}
 ]

The second setterbar displays numbers. Now, when clicking e.g. "two" in the first setterbar, I'd like that in the second setterbar the numbers update to 4 and 5. Then when clicking e.g. "three" in the first setter bar, the second setter bar updates to 6 7 8 9, and so on. The s is a much larger and more complex imported file, and the 'calc' is a more complex operation, but this should outline the principle – and basic problem.

Answer 1

I think you want to use ControlType to fix the type of controller, and I would suggest using an Association to quickly select the values, like this:

(*Association of e to calc values*)
import = <|"one" -> {1, 2, 3}, "two" -> {4, 5}, "three" -> {6, 7, 8, 9}|>;

Manipulate[
  s = Select[import, MemberQ[#, e] &];
  calc,

  {e, {"one", "two", "three"}},
  (*Here we make calc depend on the value of e by just using it in the variable spec*)
  {calc, import[e], ControlType -> TogglerBar}
]