How to use Cost Matrix Array from the API response in Jsprit input file pattern

jsprit
1

I’m having the distance cost matrix from the Here Maps API where I’m getting it in the below pattern.

    "matrix": {
    "numOrigins": 7,
    "numDestinations": 7,
    "distances": [
        0,
        1371660,
        1095330,
        2398157,
        1863064,
        1057507,
        1509647,
        1417624,
        0,
        2470654,
        3756006,
        862045,
        2434034,
        2469934,
        1104670,
        2479180,
        0,
        1723441,
        2909077,
        463021,
        1844673,
        2399422,
        3709873,
        1713409,
        0,
        4194674,
        1272042,
        1970555,
        1846938,
        853422,
        2899968,
        4239843,
        0,
        2862145,
        3086316,
        1053392,
        2432312,
        452061,
        1273493,
        2857799,
        0,
        1427966,
        1509159,
        2467407,
        1835375,
        1971354,
        3059758,
        1432000,
        0
    ]

How can I use this matrix data and automate it to This format or pickups_and_deliveries_solomon_r101_open.xml or any input format to solve VRP probelm.

In simple terms- How can I use the distance/time cost square matrix input array into jsprit. Is there any code available to automate this task?

Thanks!

2

You can read file CostMatrixDistance.java in example. It resolve this problem
(sorry, iam lazy)

image.png
image.png1030×645 56.6 KB

Vào Th 6, 29 thg 5, 2020 vào lúc 18:59 Rishabh Shrivas via GraphHopper Forum discuss-management@graphhopper.com đã viết:

1 Like
3

I have also solved a similar problem. I took the distance matrix from GraphHopper down to js. Then use Js to send that matrix to Jsprit. I put Jsprit in a java server. This server receives the matrix and processes it. This is my controller file

Vào Th 7, 30 thg 5, 2020 vào lúc 20:45 Đức Vũ Văn vuvanduc1998realkio@gmail.com đã viết:

image.png
image.png1030×645 56.6 KB

HelloController.java (5.76 KB)

4

@D_c_Vu_Van Thanks for replying. I checked this example but the problem is it is getting done by hard code one by one like this

    costMatrixBuilder.addTransportDistance("1", "3", 1.0);
    costMatrixBuilder.addTransportDistance("2", "3", 2.0);

    costMatrixBuilder.addTransportTime("0", "1", 10.0);
    costMatrixBuilder.addTransportTime("0", "2", 20.0);

In my case its in NxN matrix format which has to be automated for building cost matrix using costMatrixBuilder. I would like to know your opinion on this.

Thanks!

5

You can save the results received after creating the matrix. Then add each spacing as sample code. I did the same above

6

You can read it