Search found 4 matches

by P.Ganss
5 years ago
Forum: Modeling
Topic: table into sets?
Replies: 1
Views: 2406

table into sets?

Hello everyone, I want to alter a table format of: C D E A 1 2 3 B 4 5 - (Imagine the transportation problem tale) Into something like this: a.c 1 A.D 2 a.e 3 b.c 4 b.d 5 To be able to create a much larger set of possible routes which arent all connected with each other. Would this be correct? param...
by P.Ganss
5 years ago
Forum: Modeling
Topic: Transportation problem with limited and fixed routes
Replies: 0
Views: 2072

Transportation problem with limited and fixed routes

Hello everyone Still quite unexperienced, I need some checks for a model I have to solve with GAMS: I have a distribution of surplus [positive value for a(i)] and need [negative value for a(i)] in several locations and created a route system in which each locations is connected to its 9 nearest neig...
by P.Ganss
5 years ago
Forum: Modeling
Topic: Altering the standard transportation problem
Replies: 3
Views: 3122

Re: Altering the standard transportation problem

Suggest you to post your code which others can run, either using BBcode or attachment :) Then we are more convenient and comprehensive to help you! Best, Gabriel Hi Gabriel, Since I did not made any major changes towards the well known transportation problem I guessed my code would not give any muc...
by P.Ganss
5 years ago
Forum: Modeling
Topic: Altering the standard transportation problem
Replies: 3
Views: 3122

Altering the standard transportation problem

Hello everyone, I am trying to alter the standard transportation problem from the model library. I want to include several more "producers" and "markets" into the problem and define their distance in the d(i,j) matrix. Here I run into my problem: I have a working excel import to ...