How to solve the invalid projection error in CRS?

Question

from pyproj import CRS
import geopandas as gpd
import matplotlib.pyplot as plt
import matplotlib

import json
import pandas as pd

gdf = geopandas.read_file("Frog_Census_Records.geojson")

The error displayed is :

CRSError: Invalid projection: epsg:4326: (Internal Proj Error: proj_create: no database context specified)

Could someone kindly help me ?

How did you install pyproj? What is the output of `python -m pyproj -v`? — snowman2, Dec 05 '21 at 19:00
Welcome to stack overflow! When displaying errors, please always include the [full traceback](//realpython.com/python-traceback) - they're critical to understanding the full source of the error. Thanks! And yes, this is likely an installation/environment setup issue, so more info about how you set up your python environment and how you installed geopandas, proj, and fiona would be helpful. — Michael Delgado, Dec 05 '21 at 20:29

score 0 · Answer 1 · answered Dec 06 '21 at 10:23

assuming that your data set is this: https://data.gov.au/dataset/ds-vic-d328facd-7545-4d30-aa4e-a5c617b748c0/details?q=
it is in EPSG:4326 so does not need to be projected. Both plotly express and geopandas plotting works without projections

import geopandas as gpd
import requests
import plotly.express as px

# gdf = gpd.read_file("Frog_Census_Records.geojson")
gdf = gpd.GeoDataFrame.from_features(requests.get("https://data-melbournewater.opendata.arcgis.com/datasets/07e011c3e36f4b0aa8023d096d5a50a8_0.geojson?outSR=%7B%22latestWkid%22%3A28355%2C%22wkid%22%3A28355%7D").json())

# px.scatter_mapbox(gdf, lat="Latitude", lon="Longitude", color="Common_name").update_layout(mapbox={"style":"carto-positron"})
gdf.plot(column="Common_name")

score 0 · Answer 2 · answered Feb 26 '23 at 05:18

In my case the error was because geopandas was installed by conda but other packages like pyproj was installed by pip.

I installed everything with pip and it solved the problem.

pip install geopandas

Reference: https://github.com/geopandas/geopandas/issues/1887

How to solve the invalid projection error in CRS?

2 Answers2