Basemap won't import because 'epsg' fi

Question

I am trying to use the Matplotlib Basemap toolkit but am running into a FileNotFoundError related to epsg when I try importing it.

I installed it using the following command:

conda install -c conda-forge basemap

Here's my import command:

from mpl_toolkits.basemap import Basemap

Here's the error:

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-1-d9467465a3b6> in <module>
----> 1 from mpl_toolkits.basemap import Basemap

/anaconda3/lib/python3.7/site-packages/mpl_toolkits/basemap/__init__.py in <module>
    154 # create dictionary that maps epsg codes to Basemap kwargs.
    155 pyproj_datadir = os.environ['PROJ_LIB']
--> 156 epsgf = open(os.path.join(pyproj_datadir,'epsg'))
    157 epsg_dict={}
    158 for line in epsgf:

FileNotFoundError: [Errno 2] No such file or directory: '/anaconda3/share/proj/epsg'

I'm completely new to Basemap, so I'm not sure how to go about fixing this. I'm using Jupyter Notebook to run Python 3.7.3 on macOS Mojave 10.14.6.

Thanks in advance.

Answer 1

You are looking for this file: https://github.com/matplotlib/basemap/blob/master/lib/mpl_toolkits/basemap/data/epsg

Your PROJ_LIB env var does not appear to end with .../site-packages. Please refer to https://ctcoding.wordpress.com/2019/01/29/solved-proj_lib-error-when-installing-basemap-on-windows-using-anaconda/

Take a look at $ conda info --base, and then run

$ find `conda info --base` -name epsg

to verify the file was installed in the intended directory. Adjust PROJ_LIB to point there.