Import Ngl error

[jfowler9]

I installed pyNGL (version 1.6.1) onto my Mac (OS 10.14.6) using the following commands:

conda create --name pyn_env --channel conda-forge pynio pyngl
source activate pyn_env

I then tested pyNGL and pyNIO;

import Nio
import Ngl

pyNio is fine, but I got the following error with pyNGL;

ImportError: dlopen(/Users/jen/anaconda3/envs/pyn_env/lib/python3.7/site-packages/ngl/fplib.cpython-37m-darwin.so, 2): Library not loaded: @rpath/libgfortran.3.dylib
Referenced from: /Users/jen/anaconda3/envs/pyn_env/lib/python3.7/site-packages/ngl/fplib.cpython-37m-darwin.so
Reason: image not found

Can you help me with this error? Thank you.

[KMFleischer]

Hi,

I've installed the software like you did with minicondas conda for python 3.7 on may mac (OsX 10.14.6), and everythings works fine.

The error message is saying that the gfortran library is not installed in your pyn_env environment, maybe you can install it manually with 'conda install -n pyn_env -c conda-forge gfortran'.

-Karin

[jfowler9]

Hi Karin, I uninstalled Anaconda, did a fresh install of minicondas then typed; conda create --name pyn_env --channel conda-forge pynio pyngl I still get the same error when I test with “import Ngl”. The version of gfortran library installed is libgfortran-4.0.0. Before proceeding with the install I got this; libgfortran conda-forge/osx-64::libgfortran-4.0.0-2 Isn’t the error indicating pyngl is looking for libgfortran-3? I also tried: conda install -n pyn_env -c conda-forge gfortran But got this error; PackagesNotFoundError: The following packages are not available from current channels: - gfortran Thank you for your help, Jen On Oct 18, 2019, at 10:10 AM, Karin Meier-Fleischer <[email protected]<mailto:[email protected]>> wrote: Hi, I've installed the software like you did with minicondas conda for python 3.7 on may mac (OsX 10.14.6), and everythings works fine. The error message is saying that the gfortran library is not installed in your pyn_env environment, maybe you can install it manually with 'conda install -n pyn_env -c conda-forge gfortran'.

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[jfowler9]

Hello, I solved my problem. I had to force the install for gfortan 3; conda create -n new_environment --channel conda-forge pynio pyngl libgfortran=3 And I had to install XQuartz on my Mac. Now everything is running smoothly. Thank you, Jen On Oct 18, 2019, at 10:10 AM, Karin Meier-Fleischer <[email protected]<mailto:[email protected]>> wrote: Hi, I've installed the software like you did with minicondas conda for python 3.7 on may mac (OsX 10.14.6), and everythings works fine. The error message is saying that the gfortran library is not installed in your pyn_env environment, maybe you can install it manually with 'conda install -n pyn_env -c conda-forge gfortran'.

…

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[linlintamu]

Thank you!

It is very tricky that you have to download gfortran on your own and add it to your anaconda/lib.

[RuralBee]

I via

Hi,

I've installed the software like you did with minicondas conda for python 3.7 on may mac (OsX 10.14.6), and everythings works fine.

The error message is saying that the gfortran library is not installed in your pyn_env environment, maybe you can install it manually with 'conda install -n pyn_env -c conda-forge gfortran'.

-Karin

Hi Karin,
I have the same issue,I via "conda install -c uvcdat gfortran" installed gfortran, but the issue still is
portError: dlopen(/Users/CJB/opt/miniconda3/envs/ncl_py/lib/python3.7/site-packages/ngl/fplib.cpython-37m-darwin.so, 2): Library not loaded: @rpath/libgfortran.4.dylib
Referenced from: /Users/CJB/opt/miniconda3/envs/ncl_py/lib/python3.7/site-packages/ngl/fplib.cpython-37m-darwin.so
Reason: image not found
I am excepting your promote reponse, if it is convenient for you

[lj-mu]

1. locate libgfortran.4.dylib
2. ln -s $PATH_libgfortran.4.dylib ~/Applications/miniconda3/lib/