Apollo: ImportError: No module named matplotlib.pyplot

[lesun90]

I am using apollo 3.0, when I run python modules/tools/mapshow/mapshow.py

Traceback (most recent call last):
File "modules/tools/mapshow/mapshow.py", line 21, in
import matplotlib.pyplot as plt
ImportError: No module named matplotlib.pyplot

This script was run in Apollo 2.x but not run in 3.0

System information

• Apollo installed from (source or binary):
• Apollo version (3.0):

Steps to reproduce the issue:

python modules/tools/mapshow/mapshow.py

[daviduhm]

You can install matplotlib by “conda install matplotlib” inside the docker container.

[lesun90]

I did run that command, but I get the following error

Executing transaction: failed
ERROR conda.core.link:_execute(502): An error occurred while uninstalling package 'defaults::conda-4.5.4-py27_0'.
OSError(13, 'Permission denied')
Attempting to roll back.

Rolling back transaction: done

OSError(13, 'Permission denied')

[Hyungza]

Permission denied.
You can give the permission for conda by using ' sudo env "PATH=$PATH" '
Try below command.

sudo env "PATH=$PATH" conda install matplotlib

In my case, it works.

[Zhenni17]

@lesun90 ，did @Hyungza 's answer hope you with your question?

[lesun90]

Hi,
I try and success install the matplotlib, however, still could not run the mapshow.py

python modules/tools/mapshow/mapshow.py
RuntimeError: module compiled against API version 0xa but this version of numpy is 0x9
Traceback (most recent call last):
  File "modules/tools/mapshow/mapshow.py", line 21, in <module>
    import matplotlib.pyplot as plt
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/pyplot.py", line 31, in <module>
    import matplotlib.colorbar
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/colorbar.py", line 32, in <module>
    import matplotlib.artist as martist
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/artist.py", line 16, in <module>
    from .path import Path
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/path.py", line 21, in <module>
    from . import _path, rcParams
ImportError: numpy.core.multiarray failed to import

and after I install numpy, it get another error

python modules/tools/mapshow/mapshow.py
Traceback (most recent call last):
  File "modules/tools/mapshow/mapshow.py", line 21, in <module>
    import matplotlib.pyplot as plt
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/__init__.py", line 126, in <module>
    from . import cbook
  File "/usr/local/miniconda2/lib/python2.7/site-packages/matplotlib/cbook/__init__.py", line 34, in <module>
    import numpy as np
  File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 160, in <module>
    from . import random
  File "/usr/local/lib/python2.7/dist-packages/numpy/random/__init__.py", line 99, in <module>
    from .mtrand import *
ImportError: /usr/local/lib/python2.7/dist-packages/numpy/random/mtrand.so: undefined symbol: PyFPE_jbuf

It seems this fix going nowhere.

That python script was run fine in apollo 2.x

[mickeyouyou]

Hi @lesun90 this error ImportError: /usr/local/lib/python2.7/dist-packages/numpy/random/mtrand.so: undefined symbol: PyFPE_jbuf may occur by having multiple versions of numpy installed.

Refer by https://stackoverflow.com/questions/36190757/numpy-undefined-symbol-pyfpe-jbuf

You can have a try, in my case, it works.

[mickeyouyou]

You can find load path of numpy by scripts:

Create /usr/local/bin/python-which

#!/usr/bin/env python

import importlib
import os
import sys

args = sys.argv[1:]
if len(args) > 0:
    module = importlib.import_module(args[0])
    print os.path.dirname(module.__file__)

Make it executable

sudo chmod +x /usr/local/bin/python-which

python-which numpy

for my case

apollo@in_dev_docker:/apollo$ python-which numpy
/home/tmp/ros/lib/python2.7/dist-packages/numpy

At last, I replaced the numpy from miniconda to ros directory

cp -r /usr/local/miniconda2/lib/python2.7/site-packages/numpy /home/tmp/ros/lib/python2.7/dist-packages/numpy

it works.

refer : https://stackoverflow.com/questions/247770/retrieving-python-module-path

[lesun90]

Thank you for your reply, but is ther any other way to fix this problem. All I want to do is run this script in apollo 3.0

python modules/tools/mapshow/mapshow.py

[Hyungza]

install updated numpy in docker

sudo pip install -U numpy --ignore-installed

then, you can import pyplot library

[lesun90]

still not work, are you able to run python modules/tools/mapshow/mapshow.py in apollo 3.0?

[nandita05]

@lesun90
Try to copy both numpy and matplotlib directories from miniconda to ros directory:
cp -r /usr/local/miniconda2/lib/python2.7/site-packages/numpy /home/tmp/ros/lib/python2.7/dist-packages/
cp -r /usr/local/miniconda2/lib/python2.7/site-packages/matplotlib /home/tmp/ros/lib/python2.7/dist-packages/numpy

It worked for me. Good luck !

[lesun90]

@nandita05 still not work for me

[kk2491]

Hi Guys, I am facing the same error.

Could you please clarify if the mapshow is supported in Apollo 3.0

Thank you

[kk2491]

@nandita05 Thanks for the help. I was able to fix the error. Steps followed.

sudo env "PATH=$PATH" conda install matplotlib

The above installation upgrades the numpy version which would result in new error due to the different versions of numpy in miniconda and ROS.

Then I copied the miniconda numpy to ros

 cp -r /usr/local/miniconda2/lib/python2.7/site-packages/numpy /home/tmp/ros/lib/python2.7/dist-packages/

Now I am able to run mapshow without any issues.

Thank you,
KK

[natashadsouza]

Closing this issue as it appears to be resolved. Please refer to @kk2491 's response. Thanks!