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TMgen is a tool for generating spatial, temporal, and spatio-temporal traffic matrices.

License: MIT License

Python 98.93% Makefile 1.07%

traffic-matrix

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tmgen's Issues

Cannot Install from pip

Hello,

Thanks for writing this code. I want to use it but I'm not able to install it right now. I downloaded the repo. I also installed cython and numpy with pip.

I'm running python version 3.5.2 and pip 19.1.1.

Here is the error I am getting when I run pip install -e . or pip install .

    ERROR: Complete output from command python setup.py egg_info:
    ERROR: Compiling src/tmgen/hmc.pyx because it changed.
    Compiling src/tmgen/models.pyx because it changed.
    Compiling src/tmgen/tm.pyx because it changed.
    [1/3] Cythonizing src/tmgen/hmc.pyx
    [2/3] Cythonizing src/tmgen/models.pyx
    [3/3] Cythonizing src/tmgen/tm.pyx
    /Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/Cython/Compiler/Main.py:367: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /Users/TomNason/Dropbox/GreyLambda/GreyLambda_git/scripts/TMgen-master/src/tmgen/hmc.pxd
      tree = Parsing.p_module(s, pxd, full_module_name)
    /Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/Cython/Compiler/Main.py:367: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /Users/TomNason/Dropbox/GreyLambda/GreyLambda_git/scripts/TMgen-master/src/tmgen/models.pxd
      tree = Parsing.p_module(s, pxd, full_module_name)
    /Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/Cython/Compiler/Main.py:367: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /Users/TomNason/Dropbox/GreyLambda/GreyLambda_git/scripts/TMgen-master/src/tmgen/tm.pxd
      tree = Parsing.p_module(s, pxd, full_module_name)
    Download error on https://pypi.python.org/simple/pytest-runner/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) -- Some packages may not be found!
    Couldn't find index page for 'pytest-runner' (maybe misspelled?)
    Download error on https://pypi.python.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:645) -- Some packages may not be found!
    No local packages or working download links found for pytest-runner
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/Users/TomNason/Dropbox/GreyLambda/GreyLambda_git/scripts/TMgen-master/setup.py", line 74, in <module>
        'Topic :: Software Development :: Libraries :: Python Modules'
      File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/core.py", line 108, in setup
        _setup_distribution = dist = klass(attrs)
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/setuptools/dist.py", line 315, in __init__
        self.fetch_build_eggs(attrs['setup_requires'])
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/setuptools/dist.py", line 361, in fetch_build_eggs
        replace_conflicting=True,
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/pkg_resources/__init__.py", line 850, in resolve
        dist = best[req.key] = env.best_match(req, ws, installer)
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/pkg_resources/__init__.py", line 1122, in best_match
        return self.obtain(req, installer)
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/pkg_resources/__init__.py", line 1134, in obtain
        return installer(requirement)
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/setuptools/dist.py", line 429, in fetch_build_egg
        return cmd.easy_install(req)
      File "/Users/TomNason/GreyLambdaEnv/lib/python3.5/site-packages/setuptools/command/easy_install.py", line 659, in easy_install
        raise DistutilsError(msg)
    distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('pytest-runner')
    ----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /Users/TomNason/Dropbox/GreyLambda/GreyLambda_git/scripts/TMgen-master/

Usage of gravity model for the generation of traffic matices is different from the reference "Simplifying the synthesis of Internet traffic matrices"

Hi, Thanks for sharing code. I found there is something different from the reference "Simplifying the synthesis of Internet traffic matrices" when you generate random traffic with gravity model. Here it is：
In the reference, the author said "In fact synthesis turns out to be quite easy. We start by taking Tin(ni ) and Tout(ni ) to be independent, identicallydistributed exponential random variables for i = 1, . . . , N .The TM is then generated using (1)."

However, you generated traffic matrix like this:
cpdef TrafficMatrix random_gravity_tm
dist = numpy.random.rand(num_nodes, 1)
dist = dist / sum(dist)

The dist did not follow the exponential distribution anyway. This is my first puzzle. The second is that how can i generate traffic matrices with diagonal elements of zero. I need to use this matrices to generate traffic flow from source nodes to different destination nodse without node itself traffic in-and-out. Would you please give some explanations? Thanks.

Wayne.

Cannot import tmgen.uniform

I tried to install the package and followed the document at https://tmgen.readthedocs.io/en/latest/quickstart.html#download-and-installation, but it seems this can not work. No modules or available methods are inside the package.
Tried dir(tmgen), the output does not have modules like uniform.
I am wondering if how I can make it work.

Computation of Traffic Matrices from Link Loads

Hi, I have some Link Loads data, and I want to Compute its' corresponding Traffic Matrices. How should I use this tool?
Thanks!

Fei Gui

ValueError

Hi,
I'm trying to create some traffic matrices with your module but I got an error when using modulated_gravity_tm.
All the other models (random_gravity_tm, gravity_tm, uniform_tm, exp_tm, spike_tm) work correctly.
This is my code

from tmgen import modulated_gravity_tm
tm = modulated_gravity_tm(num_nodes=2, num_tms=2, mean_traffic=1.0)

and this is the error

Traceback (most recent call last):
  File "/home/davide/PycharmProjects/robust-routing/data/tm_generator.py", line 11, in <module>
    tm = modulated_gravity_tm(num_nodes=2, num_tms=2, mean_traffic=1.0)
  File "src/tmgen/models.pyx", line 131, in tmgen.models.modulated_gravity_tm
  File "src/tmgen/models.pyx", line 182, in tmgen.models.modulated_gravity_tm
  File "src/tmgen/models.pyx", line 96, in tmgen.models._modulated_gravity
  File "src/tmgen/hmc.pyx", line 41, in tmgen.hmc.hmc_exact
ValueError: First dimension of f and g must match

Thanks!
Best,
Davide

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