I've been passed some GeoJSON shape data that I've been told is in the CRS ESRI:102001, although that property has not been written into the GeoJSON file. I've been able to confirm that is the correct CRS by converting it to EPSG:4326 using Python GDAL:

ds = gdal.VectorTranslate(input_file, srcDS=srcDS, srcSRS='ESRI:102001', dstSRS='EPSG:4326', format = 'GeoJSON', layerCreationOptions = ['RFC7946=YES', 'WRITE_BBOX=YES'])

I'd prefer to do the same in GeoPandas as I'm already using that for other tasks, while I'm only using GDAL for this one step. I've had a few goes at setting the CRS with no luck so far. This was my first effort:

inputGDF.crs = {'init' :'esri:102001'}
output_wgs84_GDF = inputGDF.to_crs("epsg:4326")

This fails on the 2nd line, with error:

pyproj.exceptions.CRSError: Invalid projection: +init=esri:102001 +type=crs: (Internal Proj Error: proj_create: cannot expand +init=esri:102001 +type=crs)

My second effort came from the proj4 info from:


inputGDF.crs = {'init' :'+proj=aea +lat_1=50 +lat_2=70 +lat_0=40 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs'}
output_wgs84_GDF = inputGDF.to_crs('epsg:4326')

This throws a similar error:

pyproj.exceptions.CRSError: Invalid projection: +init=proj=aea +lat_1=50 +lat_2=70 +lat_0=40 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +type=crs: (Internal Proj Error: proj_create: cannot expand +init=proj=aea +lat_1=50 +lat_2=70 +lat_0=40 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +type=crs)

Am I missing something?

  • Is the input data block really GeoJSON? That should have an SRID of 4326 to start.
    – Vince
    Jan 19, 2020 at 12:27
  • Please, include the output for: import sys; import pyproj; import geopandas; print(sys.version); print(pyproj.__version__); print(geopandas.__version__). Jan 19, 2020 at 13:09
  • @Vince - yeah I know, apparently ArcGIS can export in geojson format without a crs. I believe the geojson spec allows for any crs - or none.
    – Mike Honey
    Jan 19, 2020 at 22:02
  • @GabrielDeLuca - good point, sorry for not including that. Anyway snowman2 has a fix (below).
    – Mike Honey
    Jan 19, 2020 at 22:03
  • While other than 4326 is permitted, it is not recommended.
    – Vince
    Jan 20, 2020 at 1:24

1 Answer 1


The +init= syntax is deprecated. So all you need is the ESRI:102001 part. See: https://pyproj4.github.io/pyproj/stable/gotchas.html#init-auth-auth-code-should-be-replaced-with-auth-auth-code

inputGDF.crs = 'esri:102001'
  • thanks for the speedy fix!
    – Mike Honey
    Jan 19, 2020 at 21:59

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