Hi Xypron, > currently multiple users are working on integrating GLPK into > an IDE (e.g. Gusek).
> In such an IDE it makes sense to have graphs displaying the > development of the solution and updating these charts during > the execution. > As example have a look at ILOG OPL Studio, where you find > an online chart showing the development of the lower bound > and the best integer solution. > For such an IDE online graph a hook function (or callback > function) is needed, which should be defined in glp_iocp. > Of cause for the standalone solver glpsol writing to a file > makes sense. Glpsol could use the hook by placing a hook > function provided by the API into glp_iocp. Probably a more general way would be using a callback routine to notify the application program about various events in the branch-and-cut algorithm. Nevertheless, I do not see much sense in displaying the graphs during the search (I think such feature is a kind of "whistles and bells" :). I would propose to start from a version, where all necessary information is accumulated in a file and then passed to a package like BAK for further processing. Andrew Makhorin _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
