
From:  Sylvain Fournier 
Subject:  Re: [Helpglpk] Building a graph on the fly 
Date:  Tue, 17 Apr 2012 16:35:30 0300 
Hello Sylvain,
glp_arc and glp_vertex both have a field data in which information like
double a_cap; // arc capacity
double a_cost; // arc cost
double a_low; // lower bound
double a_x; // arc flow
int v_cut; // 0: node is unlabelled, 1: node is labelled
double v_pi; // node potential
double v_rhs; // supply/demand value
int v_set; // 0: vertex is in set R, 1: vertex is in set S
is stored.
glpk.h does not provide structures with these fields.
I will have to change the GLPK for Java code to provide these structures and the constants needed (length of the data fields, and offsets).
Best regards
Xypron

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