solveopt.gms

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solveopt.gms : Option solveopt explained

The option SOLVEOPT controls the way solution values are returned to the
GAMS internal data base. There are two ways to enter solveopt values:

 1. For all solves following: option solveopt=merge|replace|clear

    merge  : solution values are merged into the existing GAMS data base.
             This is the DEFAULT behavior.
    replace: all equation in the model list and all variable appearing in the
             final model instance, are removed before solution records are
             returned to the GAMS data base.
    clear  : all equations and all variables mentioned in symbolic equations
             belonging to the current model instance are removed before
             solution records are returned to the GAMS data base.
 2. For a specific model: <model>.solveopt=n

    1  merge    this is the DEFAULT value
    0  replace
    2  clear

    The model attribute is initialized to NA, which means to use the global
    solveopt settings.

Reference:

GAMS Development Corporation, Modeling Tool Box.

Small Model of Type: GAMS

$Title option solveopt explained (SOLVEOPT,SEQ=347) $ontext The option SOLVEOPT controls the way solution values are returned to the GAMS internal data base. There are two ways to enter solveopt values: 1. For all solves following: option solveopt=merge|replace|clear merge : solution values are merged into the existing GAMS data base. This is the DEFAULT behavior. replace: all equation in the model list and all variable appearing in the final model instance, are removed before solution records are returned to the GAMS data base. clear : all equations and all variables mentioned in symbolic equations belonging to the current model instance are removed before solution records are returned to the GAMS data base. 2. For a specific model: <model>.solveopt=n 1 merge this is the DEFAULT value 0 replace 2 clear The model attribute is initialized to NA, which means to use the global solveopt settings. GAMS Development Corporation, Modeling Tool Box. $offtext set i / a,b,c /, j(i) / b /; variables obj,x1(i),x2(i),x3(i),x4(i); equations defobj,e1(i),e2(i),e3(i); defobj.. obj =e= sum(i, x1(i)); e1(i) .. x1(i) =g= ord(i) + x4(i)$0; e2(j) .. x2(j) =e= 20; e3(i)$0 .. x3(i) =e= ord(i)*10; model m / all /; m.limcol=0; m.limrow=0; x1.up(i) = 10; x2.up(i) = 20; x3.up(i) = 30; x4.up(i) = 40; e1.scale(i) = 10; e2.scale(i) = 20; e3.scale(i) = 30; *option solveopt=merge; m.solveopt=1; solve m us lp min obj; * data items not in the model instance remain unchanged display x1.up,x2.up,x3.up,x4.up,e1.scale,e2.scale,e3.scale; *option solveopt=replace; m.solveopt=0; solve m us lp min obj; * data of equations in the model list will be removed before results are returned * data of variables in the current model instance will be removed before * returning results display x1.up,x2.up,x3.up,x4.up,e1.scale,e2.scale,e3.scale; *option solveopt=clear; m.solveopt=2; solve m us lp min obj; * data of equations in the model list will be removed before results are returned * data of variables appearing in the symbolic equations of model will be * removed before results are returned display x1.up,x2.up,x3.up,x4.up,e1.scale,e2.scale,e3.scale;