Matlab AMPL Constraint.drop用法及代码示例

ampl.eval('var x{1..3}<=4;');
  ampl.eval('maximize z: sum{i in 1..3} x[i];');
  ampl.eval('c1: x[2] <= 1;');
  ampl.eval('c2 {i in 1..3} : x[i] <= i;');
  x = ampl.getVariable('x');
  ampl.solve;
  x.display
  ampl.getConstraint('c1').drop
  ampl.solve;
  x.display
  ampl.getConstraint('c2').drop
  ampl.solve;
  x.display

gives::

  ans =
  x [*] :=
  1  1
  2  1
  3  3
  ;

  ans =
  x [*] :=
  1  1
  2  2
  3  3
  ;


  ans =
  x [*] :=
  1  4
  2  4
  3  4
  ;