Originally posted by: Rafaf

Hello,

I am trying to replicate the algorithm (figure) in OPL, it is VRPTW, and I can not seem to get out of the place. If someone can send a template or help in the construction of this code.

Hi,

have you had a look at https://www.ibm.com/developerworks/community/forums/html/topic?id=77777777-0000-0000-0000-000014931542&ps=25

?

regards

https://www.linkedin.com/pulse/o-que-%C3%A9-otimiza%C3%A7%C3%A3o-e-como-isso-pode-ajud%C3%A1-lo-fazer-mais-fleischer/

Originally posted by: Rafaf

Hi, Mr. Alex,

The initial processing I understood how to do ... but now in the objective part I'm lost, 
could you help me outline how that algorithm would look?

//Parâmetros
int n = 49;
range cidades = 1..n;

float x[cidades]=...;
float y[cidades]=...;
string notas[cidades]=...;
float Dij[cidades][cidades];
float Radianlat[cidades];
float Radianlong[cidades];
float PI = 3.14159265358979;
float Earth = 6376.5;

//Processamento dados de entrada
execute Fase1{

function Dist(i,j){

 
 Radianlat[i]=x[i]*PI/180;
 Radianlong[i]=y[i]*PI/180;
 
 return Earth*Math.acos(Math.sin(Radianlat[i])*Math.sin(Radianlat[j])+
 Math.cos(Radianlat[i])*Math.cos(Radianlat[j])*Math.cos(Radianlong[i]-Radianlong[j]));
 
 }
     
for (var i in cidades)
 for (var j in cidades)
  if (i!=j){
 
   Dij[i][j]=Dist(i,j);
      
  }
}

Hi,

the code you attached is about computing geodesic distances.

https://www.ibm.com/developerworks/community/forums/html/topic?id=9c6d7f6c-8d53-4965-af96-c18b1f1f3059

Which objective ?

regards

Originally posted by: Rafaf

Hi Sir Alex,

Goal is that I have to visit 49 clients, and each point has a service time, so I have 3 vehicles 
to carry out the visits. The capacity of each one is to carry out 10 visits in an 8-hour working day. 
So my remarks would be due to time and capacity. The code above is an example of what I have already done, 
I was able to import the coordinates of each client and calculate the distances.

Thank you

Hi,

a few starting points:

https://www.ibm.com/developerworks/community/forums/html/topic?id=a03f60c3-0b5b-48f8-b622-c44944028363&ps=25

https://www.ibm.com/developerworks/community/forums/html/topic?id=f58daf79-f752-48e4-8f25-54b2f6f71b40&ps=25

and vrp.mod exp.dat

regards

Originally posted by: Rafaf

Thanks Sir Alex!!