Issue running pyvroom

[murali731]

Hi, I tried running the example code given in the documentation but encountered errors. Please let me know how to resolve this.

Find below the Python code I have used.

---

import vroom

problem_instance = vroom.Input()

problem_instance.set_durations_matrix(
profile="car",
matrix_input = [[0, 2104, 197, 1299],
[2103, 0, 2255, 3152],
[197, 2256, 0, 1102],
[1299, 3153, 1102, 0]],
)

problem_instance.add_vehicle([vroom.Vehicle(47, start=0, end=0),
vroom.Vehicle(48, start=2, end=2)])

problem_instance.add_job([vroom.Job(1414, location=0),
vroom.Job(1515, location=1),
vroom.Job(1616, location=2),
vroom.Job(1717, location=3)])

solution = problem_instance.solve(exploration_level=5, nb_threads=4)

print('Done')

---

I tried running the same code with different versions of Python.

Error with Python version 3.7.1

C:\Project\venvs\work_1\Scripts\python.exe C:\Project\practice_work\vrp_vroom\test.py
Traceback (most recent call last):
File "C:\Project\practice_work\vrp_vroom\test.py", line 1, in
import vroom
File "C:\Project\venvs\work_1\lib\site-packages\vroom_init_.py", line 14, in
from .input.input import Input
File "C:\Project\venvs\work_1\lib\site-packages\vroom\input\input.py", line 6, in
from numpy.typing import ArrayLike
ModuleNotFoundError: No module named 'numpy.typing'

Error with Python version 3.8.10:

C:\Project\venvs\work_2\Scripts\python.exe C:\Project\practice_work\vrp_vroom\test.py
Traceback (most recent call last):
File "C:\Project\practice_work\vrp_vroom\test.py", line 5, in
problem_instance.set_durations_matrix(
File "C:\Project\venvs\work_2\lib\site-packages\vroom\input\input.py", line 283, in set_durations_matrix
matrix_input = _vroom.Matrix(numpy.asarray(matrix_input, dtype="uint32"))
RuntimeError: Incompatible buffer format!

Operating system: Windows 10, 64-bit

[jonathf]

Do you mind updating and reporting the version of Numpy? I suspect it is out of date?

[jfulem]

I have the same issue. Numpy version 1.26.0, pyvroom 1.13.3. Win 11, 64-bit. I'm using python 3.10.11.

[jfulem]

@jcoupey, please, can you help me with this issue specific to Win OS?

[jonathf]

There are two different errors here. Are you saying that you are getting the error equal to 3.7 or 3.8?

[jfulem]

Yes

set_durations_matrix
matrix_input = _vroom.Matrix(numpy.asarray(matrix_input, dtype="uint32"))
RuntimeError: Incompatible buffer format!

[jonathf]

I can't reproduce so I'm not completly sure, but I suspect that the underlying data types are mismatching.

I've made a experimental release for 1.13.4-dev1 which you can try out where I replace uint32 with generic unsigned integer.

Let me know if that solves the issue.

[jfulem]

Can I install via pip?

[jonathf]

yes. pip install pyvroom==1.13.4.dev1.

[jfulem]

Hmm, I'm getting still this:
matrix_input = _vroom.Matrix(numpy.asarray(matrix_input, dtype="u4"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Incompatible buffer format!

[jfulem]

And @jonathf you can't reproduce on windows 11? Which python? I tried
Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]

[jonathf]

That is unfortunate. I don't have a windows machine.

@nilsnolde, any chance you have time to try diagnose this issue?

[jfulem]

@jonathf on Ubuntu 20.04 or 22.04 it works with no issues. But we want to support Windows as well :-(.

[nilsnolde]

I’m currently taking a bit of distance to unpaid work for the rest of the year tbh. That is to say, you can contact me on enquiry@gis-ops.com @jfulem if you want commercial support on this. At some point we’ll deal with this too, but that’s well into next year.

[nilsnolde]

Fwiw, the tests should probably run on windows as well. For FOSS it’s not counting towards GitHub limits @jonathf. OSX should mostly be fine when Linux is ok since the tool chains are so similar, but win is a very different STL.

[jfulem]

@nilsnolde OK, fair enough. I don't need commercial support.