Originally posted by: Ouput

Help me please !!! It has error about unsupported array slot index

Hi,

I see

x[0][j][v]

but x is

dvar boolean x[i in Customers][j in Customers][v in Vehicles]; 

with customers being

range Customers = 1..c;

So you should fix that.

regards

Originally posted by: Ouput

Hi,

Thanks for your help. But I can not understand your idea, I fix like the attach file

It still that error :'( and  I want define x[0][j][v] from depot so I let the depot is point 0

Ok then you have to change the range for the array x

Plus, in

ct10: forall(d in Drivers, v in Vehicles, t in Workdays, i in Customers)
         r[d][t] >= u[n+1][v][t] - tw[i].e - M*(1-y[d][v]);

you use n+1 but this leads to an out of bound since n+1 is not in nodes

regards

https://www.linkedin.com/pulse/making-decision-optimization-simple-alex-fleischer/

Originally posted by: Ouput

Hi,

So I change all depot equal to 0. It still has that error. Please help me. The objective of my is Minimize travel cost, penalty for late loading cost and penalty costs incurred for late servicing, I have one central depot and distribution for 50 customers, I have 20 trucks with capacity is 2 tons, each driver has an 8 hours working day and each customer has fix time windows. I think my constraint missing something

Hi,

in your .dat you have

cost=[[7 6 8 15 10]
 [6.3 5.4 7.2 13.5 9]
 [8.4 7.2 9.6 18 12]
 [6.3 5.4 7.2 13.5 9]
 [6.3 5.4 7.2 13.5 9]];

whereas in .mod

float Ct[Nodes][Nodes]=...;  

You should use the same identifiers in .mod and .dat

regards

Originally posted by: Ouput

Please help me. I try with new code and the code just choose vehicle number 2 and 3