[pyngl-talk] missing shared library for PyNIO

[Fan, Xingang]

Hi, Kevin:

We had talked before about installing pynio and pyngl on my old Mac OSX 10.8. At that time, I was able to use channel ncar and khallock for them.

Now, I just got a new Mac system today, Mac OSX 10.12. I followed procedures that I used last time, it seems having problems again (this time I use conda-forge).

Here are the main steps:

After installed anaconda2:
   conda create –n metuse python=2.7 basemap netcdf4
   source activate metuse
   conda install –c conda-forge pynio pyngl

Here are the problems when I import basemap and Nio in python:

>>> import numpy
>>> from mpl_toolkits.basemap import Basemap
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", line 31, in <module>
    from mpl_toolkits.axes_grid1 import make_axes_locatable
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/mpl_toolkits/axes_grid1/__init__.py", line 6, in <module>
    from . import axes_size as Size
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/mpl_toolkits/axes_grid1/axes_size.py", line 19, in <module>
    from matplotlib.axes import Axes
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/axes/__init__.py", line 4, in <module>
    from ._subplots import *
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/axes/_subplots.py", line 10, in <module>
    from matplotlib.axes._axes import Axes
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/axes/_axes.py", line 23, in <module>
    import matplotlib.contour as mcontour
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/contour.py", line 23, in <module>
    import matplotlib.text as text
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/text.py", line 33, in <module>
    from matplotlib.backend_bases import RendererBase
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 63, in <module>
    import matplotlib.textpath as textpath
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/textpath.py", line 20, in <module>
    from matplotlib.mathtext import MathTextParser
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/mathtext.py", line 62, in <module>
    import matplotlib._png as _png
ImportError: dlopen(/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/_png.so, 2): Library not loaded: @rpath/libpng16.16.dylib
  Referenced from: /Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/matplotlib/_png.so
  Reason: Incompatible library version: _png.so requires version 45.0.0 or later, but libpng16.16.dylib provides version 44.0.0
>>> 
>>> from mpl_toolkits.basemap import Basemap
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/mpl_toolkits/basemap/__init__.py", line 30, in <module>
    from mpl_toolkits.basemap import pyproj
ImportError: cannot import name pyproj
>>> 
>>> import Nio
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/PyNIO/Nio.py", line 83, in <module>
    from nio import *
ImportError: dlopen(/Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/PyNIO/nio.so, 2): Library not loaded: @rpath/libpng16.16.dylib
  Referenced from: /Users/xng02546/anaconda2/envs/metuse/lib/python2.7/site-packages/PyNIO/nio.so
  Reason: Incompatible library version: nio.so requires version 45.0.0 or later, but libpng16.16.dylib provides version 44.0.0
>>>

Please see if you can identify where I went wrong.
Thanks,

Xingang

-- 
Xingang Fan, Ph. D.,        |      Department of Geography and Geology
Associate Professor         |      Western Kentucky University
of Meteorology                |      1906 College Heights Blvd., #31066
270-745-5980                   |      Bowling Green, KY 42101-1066
xingang.fan at wku.edu
http://people.wku.edu/xingang.fan