Strange behaviour - Normalised Cut (on Macbook)

[bricklemacho at gmail.com]

Hi All,

Running this example: 
http://scikit-image.org/docs/dev/auto_examples/plot_ncut.html#example-plot-ncut-py

On one machine, example works as expected.  On my work machine I am 
getting the following results of normalised cuts example: 
http://imgur.com/uWmvW2p

Details on machines and what I have tried is below.

Any help appreciated.

Regards,

Michael.
--


Macbook 1 (work as expected):
--------------------------
OS X Yosmite 10.10.4
Python 2.7.9 install via mac ports
skimage.__version__ 0.11.3 install via mac ports



Macbook 2 (strange behaviour)
--------------------------
OS X Yosmite 10.10.5
Python 2.7.10 installed via mac ports
skimage.__verison__ 0.11.3 installed via mac ports

Things I have tried:
1.  Reinstall from source via macports
sudo rm -rf 
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/skimage*
sudo rm -rf 
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scikit_image*
sudo port upgrade -s -n --force py27-scikit-image
skimage.__version__: 0.11.3, identical result (http://imgur.com/uWmvW2p)

2. Install latest development verison
sudo rm -rf 
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/skimage*
sudo rm -rf 
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scikit_image*
git clone https://github.com/scikit-image/scikit-image.git
cd skikit-image
python setup.py build
sudo python setup.py install
skimage.__version__: 0.12dev, identical result: http://imgur.com/uWmvW2p