showbounds

Display variable bounds

Syntax

showbounds(var)

Description

Use showbounds to display the bounds on optimization variables.

Tip

For the full workflow, see Problem-Based Optimization Workflow or Problem-Based Workflow for Solving Equations.

showbounds(var) displays the bounds for var.

Examples

Display Optimization Variable Bounds

Show bounds for various optimization variables.

Create a continuous optimization variable array and display its bounds.

x = optimvar('x',2,2);
showbounds(x)

    x is unbounded.

Set lower bounds of 0 on all elements of x, and set upper bounds on the first row.

x.LowerBound = 0;
x.UpperBound(1,:) = [3,5];
showbounds(x)

    0 <= x(1, 1) <= 3
    0 <= x(2, 1)
    0 <= x(1, 2) <= 5
    0 <= x(2, 2)
    

Create a binary optimization variable array and display its bounds.

binvar = optimvar('binvar',2,2,'Type','integer',...
    'LowerBound',0,'UpperBound',1);
showbounds(binvar)

    0 <= binvar(1, 1) <= 1
    0 <= binvar(2, 1) <= 1
    0 <= binvar(1, 2) <= 1
    0 <= binvar(2, 2) <= 1
    

Create a large optimization variable that has few bounded elements, and display the variable bounds.

bigvar = optimvar('bigvar',100,10,50);
bigvar.LowerBound(55,4,3) = -20;
bigvar.LowerBound(20,5,30) = -40;
bigvar.UpperBound(35,3,35) = -200;
showbounds(bigvar)

    -20 <= bigvar(55, 4, 3)
    -40 <= bigvar(20, 5, 30)
           bigvar(35, 3, 35) <= -200
    

Input Arguments

var — Optimization variable

OptimizationVariable object

Optimization variable, specified as an OptimizationVariable object. Create var using optimvar.

Example: var = optimvar('var',4,6)

Tips

• For a variable that has many bounds, use writebounds to generate a text file containing the bound information.

Version History

Introduced in R2017b