[pyngl-talk] missing shared library for PyNIO

[Fan, Xingang]

The basemap and/or matplotlib problem seemed stemed from installation of pynio pyngl from conda-forge.

Both basemap and matplotlib works fine right after I activated the new env. But, the installation of pynio pyngl need to update matplotlib as shown below:
==========
(metuse) M-C02T336YFVH4:~ xng02546$ conda install -c conda-forge -c defaults pynio pyngl
Fetching package metadata ...........
Solving package specifications: .

Package plan for installation in environment /Users/xng02546/anaconda2/envs/metuse:

The following NEW packages will be INSTALLED:

    pyngl:      1.5.0_beta20161122-np111py27_1  conda-forge
    pynio:      1.5.0_beta20160623-np111py27_14 conda-forge

The following packages will be UPDATED:

    freetype:   2.5.5-2                                     --> 2.6.3-1           conda-forge
    matplotlib: 2.0.0-np111py27_0                           --> 2.0.0-np111py27_0 conda-forge

The following packages will be SUPERCEDED by a higher-priority channel:

    fontconfig: 2.12.1-3                                    --> 2.11.1-6          conda-forge

Proceed ([y]/n)? 
==============

If choose yes, then basemap will have problem to import, as well as Nio.

Thanks,
Xingang

On 2/7/17, 9:10 PM, "Fan, Xingang" <xingang.fan at wku.edu> wrote:

    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