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Questions - opl

How to model consecutive location in opl integer programs?

Can someone model this MIP problem? I could not think of a way to model the constraint "all balls of the same color has to be in consecutive locations" Problem description: There are 10 loca...
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Shu

cplex

opl

Votes: 0

Answers: 1

Latest Answer

I would write using CP; range locations = 1..10; int nbcolors=3; int reward[l in locations]=l; range colors=1..nbcolors; string colorNames[colors]=["blue","green","red"];...
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Alex Fleischer

Problem with reading Excel file in CPLEX OPL

I have a problem with reading the data from the excel file and getting the error message "Exception from IBM ILOG Concert: Problem accessing the Excel file". I am using the Cplex Version: 1...
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sorour

cplex

opl

ilog

Votes: 0

Answers: 0

Implementing CPLEX /C++ on a software package

I have an MIP model developed in OPL CPLEX, going forward I want to use C++ and prepare a package that I can distribute/sell to others as a desktop solution. There are several options available with I...
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Ranajit

cplex

opl

Votes: 0

Answers: 1

Latest Answer

Cplex community edition is free and that can be a good starting point. For more pricing option you should visit IBM CPLEX Website
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Alex Fleischer

Is there a way to use a tuple element which is an array, as a set inside a "sum" of a "forall" loop?

I have a short version of my code to not make the explanation too complicated. Basically the N_B is just a set of nodes that are connected to each other like node 1 connected to node 2 and 3; node 4 c...
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AlbertoC.

cplex

opl

Votes: 0

Answers: 1

Latest Answer

since ab==0 is equivalent with a==0 or b==0 you could write forall(i in N_B,t in T){ -V[i.node1][t]==0 || (sum(j in i.node2)(V[j][t]))==0; } If you use MIP within CPLEX you canno...
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Alex Fleischer

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