CODEWITHSUNDEEP
pythongeopandaspyproj
Avto Abashishvili
Avto Abashishvili

Reputation: 453

Invalid projection when opening geopandas

I need to do some spatial operations in geopandas. I created the new conda environment and installed geopandas conda install --channel conda-forge geopandas. When I run the following simple code:

import geopandas as gpd
from shapely.geometry import Point

gdf = gpd.GeoDataFrame([Point(1,1)])
gdf.set_geometry(0).set_crs(epsg=3857)

I get the following error message :

CRSError: Invalid projection: EPSG:3857: (Internal Proj Error: proj_create: no database context specified)

I tried to google the issue. There are several posts, yet I could not find the right solution. It seems that there is a problem with pyproj database. That's what I understood so far.

Any solutions?

Thanks in advance!

Upvotes: 0

Views: 491

Answers (1)

swatchai
swatchai

Reputation: 18812

The error is in the step gdf.set_geometry(0). Try this instead:

import geopandas as gpd
from shapely.geometry import Point
gdf = gpd.GeoDataFrame([Point(1,1)])

# Dont do this
# gdf.set_geometry(0).set_crs(epsg=3857)
# But do it in 2 steps
gdf.set_geometry(0, inplace=True)
gdf.set_crs(epsg=3857, inplace=True)

gdf.plot()

Without inplace=True in gdf.set_geometry(), gdf object is not ready to do .set_crs(), thus, causes the error.

output

Upvotes: 0

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