Specify the nesting structure for units

nested_in(.unit, ..., .vname)

## Arguments

.unit The name of the parent unit to nest under. a single number OR a sequence of two-sided formula where the left-hand side corresponds to the name of the level (or the level number) of .unit and the right-hand side is an integer specifying the number of levels nested under the corresponding levels. the child variable name

## Value

Returns an isolated graph

See set_units() for examples of how to use this.