min_lvl_occurrence: Find minimum level occurrences
Description
Find minimium level occurrences. This is useful to ensure/approximate attribute
level balance in designs using the Modified Federov Algorithm or the
Random design algorithms.
Usage
min_lvl_occurrence(x, rows)
Value
A list of minimum level occurrences for the attribute levels
Arguments
- x
An object of class 'utility' or 'spdesign'
- rows
Number of rows in the design