Object storing a linear constraint of the form lowerBound ≤ Sum(a(i) x(i)) ≤ upperBound
where lowerBound and upperBound are constants, a(i) are constant
coefficients and x(i) are variables (unknowns).
The example below creates one variable x with values between 0 and 5
and creates the constraint 0 ≤ 2 * x ≤ 5. This is done by first creating a constraint
with the lower bound 5 and upper bound 5. Then the coefficient for variable
x in this constraint is set to 2.
var engine = LinearOptimizationService.createEngine();
// Create a variable so we can add it to the constraint
engine.addVariable('x', 0, 5);
// Create a linear constraint with the bounds 0 and 10
var constraint = engine.addConstraint(0, 10);
// Set the coefficient of the variable in the constraint. The constraint is now:
// 0 <= 2 * x <= 5
constraint.setCoefficient('x', 2);
Methods
| Method | Return type | Brief description |
|---|---|---|
setCoefficient(variableName, coefficient) | LinearOptimizationConstraint | Sets the coefficient of a variable in the constraint. |
Detailed documentation
setCoefficient(variableName, coefficient)
Sets the coefficient of a variable in the constraint. By default, variables have a coefficient of 0.
var engine = LinearOptimizationService.createEngine();
// Create a linear constraint with the bounds 0 and 10
var constraint = engine.addConstraint(0, 10);
// Create a variable so we can add it to the constraint
engine.addVariable('x', 0, 5);
// Set the coefficient of the variable in the constraint. The constraint is now:
// 0 <= 2 * x <= 5
constraint.setCoefficient('x', 2);
Parameters
| Name | Type | Description |
|---|---|---|
variableName | String | the name of variable for which the coefficient is being set |
coefficient | Number | coefficient being set |
Return
LinearOptimizationConstraint — this linear optimization constraint