Integer Variables

[james-bryce]

Hello,

Is it possible to force variable values to be integers?

For example, I want the value to be either 0 or 1 (nothing in between).

Thanks!

[IjzerenHein]

Hi. No that's not possible. Why would you want this btw?

[mreinstein]

There are lotos of cases where this could be potentially useful. You're computing layout and want whole integer values for pixel coordinates, etc. Why is it impossible?

[joshpoll]

Linear programming with integer constraints is known as (mixed) integer linear programming (MILP or ILP). While linear programming problems can be solved in polynomial time, ILP is NP-complete. ILP solvers are based on linear programming solvers, but with significant added complexity. I think it's out of the scope of Kiwi (and other Cassowary solvers) to handle ILP.