Re: [Help-glpk] Syntax error in data section and others

[Andrew Makhorin]

> hello, i am a beginner, I have just written a glpk program. following
> code in Cplex is ok, can anybody tell me, what shuld i it's corrects in
> GLPK.
> param cost :=
>       [*,*,r1]:  zul1  zul2 :=
>            Her1    30    20
>            Her2    22    25 ;
>       [*,*,r2]:  zul1  zul2 :=
>            Her1    39    30
>            Her2    27    25 ;  

param cost :=
      [*,*,r1]:  zul1  zul2 :=
           Her1    30    20
           Her2    22    25 /* there must be no semicolon */
      [*,*,r2]:  zul1  zul2 :=
           Her1    39    30
           Her2    27    25 ;  

> another question, how can I correct this sentence? error by running:
> expression following := has invalid type.
>  
> var rohTranMenge{r in Roh, i in Zulieferer, j in Hersteller, t in Periode}, 
> >=0;
> param sumOutZ{r in Roh, i in Zulieferer, t in Periode} := sum {j in
> Hersteller} rohTranMenge[r,i,j,t];
>  

Expression, which specifies a value assigned to a parameter, cannot
contain variables.