Package plantCV up to allow installation by `setup.py install` about plantcv HOT 6 CLOSED

@jshoyer I have setuptools working now for the dev branch. I tested it myself but it would be great if you (and others) could test it also to make sure it works for you. I updated the documentation, other than for Windows, here: http://plantcv.readthedocs.io/en/latest/installation/.

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If you follow most of the instructions and follow these lines of code:

virtualenv -p ~/usr/python2/bin/bin/python2.7 Test_PlantCV --system-site-packages
cd Test_PlantCV/
git clone https://github.com/danforthcenter/plantcv.git
cd plantcv/
git checkout dev
python setup.py install

the plantcv import fails with this error

Python 2.7.9 (default, Feb 23 2015, 15:48:39) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import plantcv
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "plantcv/__init__.py", line 11, in <module>
    from print_image import print_image
  File "plantcv/print_image.py", line 3, in <module>
    import cv2
ImportError: No module named cv2
>>> 

Seems like an OpenCV issue or path and OpenCV issue.

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@calizarr when I created a virtualenv as you did, on jupyter, it worked for me. Maybe there is something up with your OpenCV path? I used our standard system OpenCV, using the --system-site-packages like you did.

from plantcv.

Looks like the problem was that @calizarr used a local Python install that did not link with the system lib paths, so cv2 was not found in the default sys.path. I think the solution here is 1) adding documentation to the installation instructions for virtualenv and 2) adding better checking in the setup.py script to make sure cv2 is importable before installing.

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sudo python setup.py install worked fine for me on a Macbook (os 10.10.5, 14F1909---I am still on Yosemite). Some cursory testing of a pipeline produced results that matched my expectations. Great!

(I have not actually read through your installation documentation yet)

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@jshoyer awesome, thanks!

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