Margi Shah

I think that is the issue. How can I use same resource object in the addConstrs method?  I shall create a different list and use that or Is there any other way?

rtn_to has no relation with it. Jaromil, It should not try to access 174 , Right? Because res goes from 54 to 173. Why is it happening so ?  

Hi Jaromil, I completely understand the working of model.I dont know I am missing a little thing. What I expect is same as : x[res] Transfertime= steel.addConstrs( (gp.quicksum(Resourc...

Hi Jaromil , Thanks for the reply. You mean to say that if I want to assign a value to a range of keys, I need to initialize it as a dictionary rather than list? Also , there is only one for loop f...

Okay, I understood the point, I tried formulating using addConstrs for the below equation & it works: Many thanks!   Taskexecution1=steel.addConstrs((gp.quicksum(Tasks[task,t] for t in time for ta...

I appreciate your detailed explanation. It made me clear few points that I was struggling to figure it out. I had gone though MILP tutorial on Gurobi website but these little points were missed out...

Many thanks for the reply. Although what I understood from above is , if there is an expression to be evaluated inside quicksum, it should be treated individually and then it shall be added.    Als...

import numpy as npimport pandas as pdimport xlrdimport csvfrom collections import OrderedDictimport math import gurobipy as gpfrom gurobipy import GRB   group2heats = {'1': [1, 2, 3, 4], '2': [5, 6...

Resourcebalance=steel.addConstrs((Resources[res,t]==Resources[res,time[time.index(t)-1]]  +            gp.quicksum(rtn_profile[res][task][theta]* Tasks[task,t-theta]             for task in task_li...

I have tried a lot , I don't know I am unable to do it. I need to use continue and conditional statement as well in my constraint.