Plot VRP output

[uni_r]

Hello, I would like to make the same graph as on this page, with the various paths...I have seen some source code here in old conversations, but I haven't really understood how to use it....

Is there any quick way to plot the results of the problem??

Thank you!

[Mizux Seiha]

It is generated by a quick and dirty script you can find here: https://github.com/google/or-tools/blob/stable/ortools/constraint_solver/doc/routing_svg.py

usage: https://github.com/google/or-tools/blob/stable/ortools/constraint_solver/doc/generate_svg.sh

e.g. https://github.com/google/or-tools/blob/stable/ortools/constraint_solver/doc/VRP.md

[uni_r]

Hi, i opened the first link but i didn't understand  how should i use this... I have also seen that the model is defined differently to the scripts on Or-Tools, like this one for example:  Vehicle Routing with Pickups and Deliveries  |  OR-Tools (google.com) (Python)

Is there any way (even if it is not necessarily the graph of or tool) to graph solutions in a simple way?

[Priidik Vilumaa]

Similar question popped up about visualization some time ago:

https://groups.google.com/g/or-tools-discuss/c/HPdguGVYQSQ/m/Jketul0uAQAJ

Perhaps you can find some other conversations in the mailing list as well. I don't think you necessarily need a .svg output anyway

Best,

Priidik

--
You received this message because you are subscribed to the Google Groups "or-tools-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to or-tools-discu...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/or-tools-discuss/976dcc1a-fe04-4c3e-92c0-b11f00fd4713n%40googlegroups.com.

[uni_r]

Hello, I have opened the page you linked, could you explain to me how to implement point 1, starting from the solution I have? I'm sorry but i'm quite new with Python...

Point 1 is this:  "If you are visualizing just for the sake of debugging, then plot the points/lines with matplotlib on a white canvas. It's very fast/simple and will give you enough information"

Thank you!

[Mizux Seiha]

here an ugly gist (I'll try to cleanup ASAP)

https://gist.github.com/Mizux/cbc48733e0c1d8cb9171bb6828811341

The main issue, is technically the solver don't know/care of the representation.

i.e. the routing solver only need transit Matrix (cost, distance, time) or Vector (capacity). but don't know the 2D (or 1D or 3D ?) locations of each node.
so to "DISPLAY" you must have this information somehow.

Then yes maybe mathplotlib is the easiest way to have a quick and dirty figure.

ps: I've use a custom svg rendering since I wanted to have an adhoc rendering, (google color palette, display custom grid, time range text, fuel icons, refill station icons, and  with maybe animation (svg do have animation spec :D)

[Corentin "mizux" Le Molgat]

Just updated the gist using the VRP GlobalSpan sample...