Unable to open EPSG support file gcs.csv (GDAL 3.0.1 PROJ 6.1.1)

[snowman2]

Not sure if this is a rasterio or a GDAL problem. Currently leaning towards GDAL, but figured I would start here.

Observed behavior

CPLE_OpenFailedError                      Traceback (most recent call last)
rasterio/_crs.pyx in rasterio._crs._CRS.from_epsg()

rasterio/_err.pyx in rasterio._err.exc_wrap_int()

CPLE_OpenFailedError: Unable to open EPSG support file gcs.csv.  Try setting the GDAL_DATA environment variable to point to the directory containing EPSG csv files.

During handling of the above exception, another exception occurred:

CRSError                                  Traceback (most recent call last)
<ipython-input-13-2f2ceb7ed749> in <module>
      1 with rasterio.Env():
----> 2     cc = CRS.from_epsg(6933)

~/.local/lib/python3.6/site-packages/rasterio/crs.py in from_epsg(cls, code)
    301         """
    302         obj = cls()
--> 303         obj._crs = _CRS.from_epsg(code)
    304         return obj
    305 

rasterio/_crs.pyx in rasterio._crs._CRS.from_epsg()

CRSError: The EPSG code is unknown. Unable to open EPSG support file gcs.csv.  Try setting the GDAL_DATA environment variable to point to the directory containing EPSG csv files.

Data directory contents

ls $GDAL_DATA | grep header.dxf
header.dxf

gcs.csv is missing from the directory.

Steps to reproduce the problem.

import rasterio
from rasterio.crs import CRS

cc = CRS.from_epsg(6933)

import rasterio
from rasterio.crs import CRS

with rasterio.Env():
    cc = CRS.from_epsg(6933)

Operating system

    python: 3.7.3 | packaged by conda-forge | (default, Jul  1 2019, 21:52:21)  [GCC 7.3.0]
   machine: Linux-4.15.0-64-generic-x86_64-with-debian-buster-sid

Rasterio version and provenance

rasterio                  1.0.28           py36h900e953_0    conda-forge
libgdal                   3.0.1                hf47eb90_8    conda-forge
proj4                     6.1.1                hc80f0dc_1    conda-forge

[snowman2]

Update: rasterio==1.0.28 works fine with GDAL 2.4.2 as $GDAL_DATA contains the gcs.csv file.

[sgillies]

@snowman2 if you were really using GDAL 3.0.1, you would see this:

rasterio.errors.CRSError: The EPSG code is unknown. PROJ: proj_create_from_database: Cannot find proj.db

This is another case of a screwed up conda environment. I'm going to close.

[snowman2]

This is another case of a screwed up conda environment. I'm going to close.

Huh, makes sense. Thanks!

[maphew]

"another case of a screwed up conda environment" sounds like a frequent occurence, and like where I am right now. Anyone have pointers to docs about how to correctly use conda and rasterio?

[snowman2]

After re-installing with conda-forge it worked.

[sgillies]

@maphew let me clarify: I don't think conda and conda-forge are extra fragile or risky. Conda-forge is a good project and Rasterio profits from its support!

Python environments, whether conda or virtualenv, can become unstable after incremental updates to them. Best practice in my opinion is to keep their configuration under version control using a requirements file or whatever (I'm not that familiar with coda) and regularly recycle them. In other words, delete them and recreate replacements.

[ClaireBrenner]

@snowman2 if you were really using GDAL 3.0.1, you would see this:

rasterio.errors.CRSError: The EPSG code is unknown. PROJ: proj_create_from_database: Cannot find proj.db

This is another case of a screwed up conda environment. I'm going to close.

I have the same problem with GDAL 3.0.2 installed from conda forge and rasterio also installed from conda forge. Is there a solution to this problem?

[ClaireBrenner]

@snowman2 if you were really using GDAL 3.0.1, you would see this:
rasterio.errors.CRSError: The EPSG code is unknown. PROJ: proj_create_from_database: Cannot find proj.db
This is another case of a screwed up conda environment. I'm going to close.

I have the same problem with GDAL 3.0.2 installed from conda forge and rasterio also installed from conda forge. Is there a solution to this problem?

Sorry, I missed that I have to downgrade to an older version of GDAL.

[sgillies]

@ClaireBrenner no, that's not true. The lastest version of rasterio works fine with GDAL 3.