categorical

Whether the set-valued variables are categorical or relaxable

Specification

• Alias: None

• Arguments: STRINGLIST

Description

A list of strings of length equal to the number of set (integer, string, or real) variables indicating whether they are strictly categorical, meaning may only take on values from the provided set, or relaxable, meaning may take on any integer or real value between the lowest and highest specified element. Valid categorical strings include ‘yes’, ‘no’, ‘true’, and ‘false’, or any abbreviation in [yYnNtTfF][.]*

Examples

Discrete_design_set variable, ‘rotor_blades’, can take on only integer values, 2, 4, or 7 by default. Since categorical is specified to be false, the integrality can be relaxed and ‘rotor_blades’ can take on any value between 2 and 7, e.g., 3, 6, or 5.5.

discrete_design_set
 integer 1
        elements 2 4 7
 descriptor 'rotor_blades'
 categorical 'no'