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[Help-glpk] symbolic parameter in set
From: |
Park, Joseph |
Subject: |
[Help-glpk] symbolic parameter in set |
Date: |
Wed, 15 Feb 2006 14:44:55 -0500 |
In
version 4.8 there is a nice example: maxflow.mod
regarding this example, how does one declare and assign a
symbolic (string) parameter within the Arcs
set?
i.e.,
I would like to assign a 'name' parameter to Arcs:
param
n, integer, >= 2;
/* number of nodes */
set
Nodes, default {1..n};
/* set of nodes */
set
Arcs, within Nodes cross Nodes;
/* set of arcs */
param
capacity {(i,j) in Arcs}, > 0;
/* capacity[i,j] is capacity of arc (i,j)
*/
param
name, symbolic, {(i,j) in Arcs};
.....
data;
param
: Arcs : name capacity :=
1
2 arc1 14
1
4 arc2 23
....;
with
the line 23 as: param name, symbolic, {(i,j) in
Arcs};
I get:
Reading model section from
maxflow.mod...
maxflow.mod:23: syntax error in parameter
statement
Context: ...city { ( i , j ) in Arcs } , > 0 ; param name ,
symbolic , {
Model processing error
Thank
you...
- [Help-glpk] symbolic parameter in set,
Park, Joseph <=