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matplotlib / basemap

Plot on map projections (with coastlines and political boundaries) using matplotlib
MIT License
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ImportError: dlopen ... symbol not found in flat namespace '_GEOSArea' #524

Closed joaquinezcurra closed 3 years ago

joaquinezcurra commented 3 years ago

Hello! While using Peter Kuma's ccplot I came accross this error:

Traceback (most recent call last): File "/Users/joaquinx/opt/anaconda3/bin/ccplot", line 54, in <module> from mpl_toolkits import basemap File "/Users/joaquinx/opt/anaconda3/lib/python3.8/site-packages/mpl_toolkits/basemap/__init__.py", line 53, in <module> from mpl_toolkits.basemap import _geoslib ImportError: dlopen(/Users/joaquinx/opt/anaconda3/lib/python3.8/site-packages/mpl_toolkits/basemap/_geoslib.cpython-38-darwin.so, 0x0002): symbol not found in flat namespace '_GEOSArea'

Peter "re-cythonized" a version of the basemap respository and I tried one of basemap's samples on a Jupyter notebook finding the same error message again. I am running this on a Mac with the M1 chip though it seems it shouldn't be a problem since the OS translates the code via Rosetta.

`ImportError Traceback (most recent call last)

in ----> 1 from mpl_toolkits.basemap import Basemap 2 import matplotlib.pyplot as plt 3 import numpy as np 4 # set up orthographic map projection with 5 # perspective of satellite looking down at 50N, 100W. ` `~/opt/anaconda3/lib/python3.8/site-packages/mpl_toolkits/basemap/__init__.py in 51 import numpy as np 52 import numpy.ma as ma ---> 53 from mpl_toolkits.basemap import _geoslib 54 import functools 55 ` `ImportError: dlopen(/Users/joaquinx/opt/anaconda3/lib/python3.8/site-packages/mpl_toolkits/basemap/_geoslib.cpython-38-darwin.so, 0x0002): symbol not found in flat namespace '_GEOSArea'` Any clues on why this might be happening? thank you!
joaquinezcurra commented 3 years ago

The issue seems to be related to Apple M1 processor, as I tried runnig a basemap example on an Intel Mac and it worked perfectly.