Still experienceing CRS error.

[Trevy05]

When I try loading my flow direction grid I get the error: CRSError Traceback (most recent call last)

in ----> 1 grid.read_raster('C:/Users/18683/Desktop/Datasets/DEM/Flow_direction.tif', data_name='dir') ~\miniconda3\lib\site-packages\pysheds\grid.py in read_raster(self, data, data_name, band, window, window_crs, metadata, **kwargs) 270 with rasterio.open(data, **kwargs) as f: 271 crs = pyproj.Proj(f.crs, preserve_units=True) --> 272 if window is None: 273 shape = f.shape 274 if len(f.indexes) > 1: ~\miniconda3\lib\site-packages\pyproj\proj.py in __init__(self, projparams, preserve_units, **kwargs) 105 '116.366 39.867' 106 """ --> 107 self.crs = CRS.from_user_input(projparams, **kwargs) 108 # make sure units are meters if preserve_units is False. 109 if not preserve_units and "foot" in self.crs.axis_info[0].unit_name: ~\miniconda3\lib\site-packages\pyproj\crs\crs.py in from_user_input(value, **kwargs) 438 if isinstance(value, CRS): 439 return value --> 440 return CRS(value, **kwargs) 441 442 def get_geod(self) -> Optional[Geod]: ~\miniconda3\lib\site-packages\pyproj\crs\crs.py in __init__(self, projparams, **kwargs) 294 projstring = _prepare_from_string(" ".join((projstring, projkwargs))) 295 --> 296 super().__init__(projstring) 297 298 @staticmethod pyproj/_crs.pyx in pyproj._crs._CRS.__init__() CRSError: Invalid projection: : (Internal Proj Error: proj_create: unrecognized format / unknown name)

[bmalbusca]

Hi, can you format the error log to markdown code (using `)? Also, can you show how is your flow direction ?

[mdbartos]

Greetings, I need more info to address this issue.

Was this raster one that you generated yourself using pysheds/rasterio?

[T4mmi]

Hi there, trying out this package for flow accumulation computation ... can't pass importing, seems to be something wrong with pyproj default SRS steps to reproduce (python 3.9, pysheds 0.3.2):

conda create -n testenv python=3.9
conda activate testenv
conda install pysheds ipython -y
ipython

from pysheds.grid import Grid

then get (dont mind conda env, i installed everything in my base env):

In [3]: from pysheds.grid import Grid
D:\Conda\lib\site-packages\pyproj\__init__.py:89: UserWarning: pyproj unable to set database path.
  _pyproj_global_context_initialize()
---------------------------------------------------------------------------
CRSError                                  Traceback (most recent call last)
Input In [3], in <module>
----> 1 from pysheds.grid import Grid

File D:\Conda\lib\site-packages\pysheds\grid.py:7, in <module>
      5     _HAS_NUMBA = False
      6 if _HAS_NUMBA:
----> 7     from pysheds.sgrid import sGrid as Grid
      8 else:
      9     from pysheds.pgrid import Grid as Grid

File D:\Conda\lib\site-packages\pysheds\sgrid.py:29, in <module>
     26 _pyproj_init = '+init=epsg:4326' if _OLD_PYPROJ else 'epsg:4326'
     28 # Import input/output functions
---> 29 import pysheds.io
     31 # Import viewing functions
     32 from pysheds.sview import Raster, MultiRaster

File D:\Conda\lib\site-packages\pysheds\io.py:9, in <module>
      7 from affine import Affine
      8 from distutils.version import LooseVersion
----> 9 from pysheds.sview import Raster, ViewFinder, View
     11 _OLD_PYPROJ = LooseVersion(pyproj.__version__) < LooseVersion('2.2')
     12 _pyproj_crs = lambda Proj: Proj.crs if not _OLD_PYPROJ else Proj

File D:\Conda\lib\site-packages\pysheds\sview.py:304, in <module>
    301         obj.metadata = metadata
    302         return obj
--> 304 class ViewFinder():
    305     """
    306     Class that defines a spatial reference system for a Raster or Grid instance.
    307     The spatial reference is completely defined by an affine transformation matrix (affine),
   (...)
    331     dy_dx : Tuple describing the cell size in the y and x directions.
    332     """
    333     def __init__(self, affine=Affine(1., 0., 0., 0., 1., 0.), shape=(1,1),
    334                  nodata=0, mask=None, crs=pyproj.Proj(_pyproj_init)):

File D:\Conda\lib\site-packages\pysheds\sview.py:334, in ViewFinder()
    304 class ViewFinder():
    305     """
    306     Class that defines a spatial reference system for a Raster or Grid instance.
    307     The spatial reference is completely defined by an affine transformation matrix (affine),
   (...)
    331     dy_dx : Tuple describing the cell size in the y and x directions.
    332     """
    333     def __init__(self, affine=Affine(1., 0., 0., 0., 1., 0.), shape=(1,1),
--> 334                  nodata=0, mask=None, crs=pyproj.Proj(_pyproj_init)):
    335         self.affine = affine
    336         self.crs = crs

File D:\Conda\lib\site-packages\pyproj\proj.py:109, in Proj.__init__(self, projparams, preserve_units, **kwargs)
     47 def __init__(
     48     self, projparams: Any = None, preserve_units: bool = True, **kwargs
     49 ) -> None:
     50     """
     51     A Proj class instance is initialized with proj map projection
     52     control parameter key/value pairs. The key/value pairs can
   (...)
    107     '116.366 39.867'
    108     """
--> 109     self.crs = CRS.from_user_input(projparams, **kwargs)
    110     # make sure units are meters if preserve_units is False.
    111     if not preserve_units and "foot" in self.crs.axis_info[0].unit_name:
    112         # ignore export to PROJ string deprecation warning

File D:\Conda\lib\site-packages\pyproj\crs\crs.py:479, in CRS.from_user_input(cls, value, **kwargs)
    477 if isinstance(value, cls):
    478     return value
--> 479 return cls(value, **kwargs)

File D:\Conda\lib\site-packages\pyproj\crs\crs.py:326, in CRS.__init__(self, projparams, **kwargs)
    324     self._local.crs = projparams
    325 else:
--> 326     self._local.crs = _CRS(self.srs)

File pyproj\_crs.pyx:2352, in pyproj._crs._CRS.__init__()

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

In [4]: from pysheds.grid import Grid
---------------------------------------------------------------------------
CRSError                                  Traceback (most recent call last)
Input In [4], in <module>
----> 1 from pysheds.grid import Grid

File D:\Conda\lib\site-packages\pysheds\grid.py:7, in <module>
      5     _HAS_NUMBA = False
      6 if _HAS_NUMBA:
----> 7     from pysheds.sgrid import sGrid as Grid
      8 else:
      9     from pysheds.pgrid import Grid as Grid

File D:\Conda\lib\site-packages\pysheds\sgrid.py:29, in <module>
     26 _pyproj_init = '+init=epsg:4326' if _OLD_PYPROJ else 'epsg:4326'
     28 # Import input/output functions
---> 29 import pysheds.io
     31 # Import viewing functions
     32 from pysheds.sview import Raster, MultiRaster

File D:\Conda\lib\site-packages\pysheds\io.py:9, in <module>
      7 from affine import Affine
      8 from distutils.version import LooseVersion
----> 9 from pysheds.sview import Raster, ViewFinder, View
     11 _OLD_PYPROJ = LooseVersion(pyproj.__version__) < LooseVersion('2.2')
     12 _pyproj_crs = lambda Proj: Proj.crs if not _OLD_PYPROJ else Proj

File D:\Conda\lib\site-packages\pysheds\sview.py:304, in <module>
    301         obj.metadata = metadata
    302         return obj
--> 304 class ViewFinder():
    305     """
    306     Class that defines a spatial reference system for a Raster or Grid instance.
    307     The spatial reference is completely defined by an affine transformation matrix (affine),
   (...)
    331     dy_dx : Tuple describing the cell size in the y and x directions.
    332     """
    333     def __init__(self, affine=Affine(1., 0., 0., 0., 1., 0.), shape=(1,1),
    334                  nodata=0, mask=None, crs=pyproj.Proj(_pyproj_init)):

File D:\Conda\lib\site-packages\pysheds\sview.py:334, in ViewFinder()
    304 class ViewFinder():
    305     """
    306     Class that defines a spatial reference system for a Raster or Grid instance.
    307     The spatial reference is completely defined by an affine transformation matrix (affine),
   (...)
    331     dy_dx : Tuple describing the cell size in the y and x directions.
    332     """
    333     def __init__(self, affine=Affine(1., 0., 0., 0., 1., 0.), shape=(1,1),
--> 334                  nodata=0, mask=None, crs=pyproj.Proj(_pyproj_init)):
    335         self.affine = affine
    336         self.crs = crs

File D:\Conda\lib\site-packages\pyproj\proj.py:109, in Proj.__init__(self, projparams, preserve_units, **kwargs)
     47 def __init__(
     48     self, projparams: Any = None, preserve_units: bool = True, **kwargs
     49 ) -> None:
     50     """
     51     A Proj class instance is initialized with proj map projection
     52     control parameter key/value pairs. The key/value pairs can
   (...)
    107     '116.366 39.867'
    108     """
--> 109     self.crs = CRS.from_user_input(projparams, **kwargs)
    110     # make sure units are meters if preserve_units is False.
    111     if not preserve_units and "foot" in self.crs.axis_info[0].unit_name:
    112         # ignore export to PROJ string deprecation warning

File D:\Conda\lib\site-packages\pyproj\crs\crs.py:479, in CRS.from_user_input(cls, value, **kwargs)
    477 if isinstance(value, cls):
    478     return value
--> 479 return cls(value, **kwargs)

File D:\Conda\lib\site-packages\pyproj\crs\crs.py:326, in CRS.__init__(self, projparams, **kwargs)
    324     self._local.crs = projparams
    325 else:
--> 326     self._local.crs = _CRS(self.srs)

File pyproj\_crs.pyx:2352, in pyproj._crs._CRS.__init__()

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

[T4mmi]

Ok, this is a pyproj error : https://github.com/geopandas/geopandas/issues/2270 ... but the explanation for fixup is shady and NOT documented : https://pyproj4.github.io/pyproj/stable/gotchas.html#internal-proj-error-sqlite-error-on-select

[edit] : Uninstalling postgis solved my problem !

[kavyajeetbora]

I had the same issue. My application was running in my system but not in remote machine as it had postgis installed in it and PROJ path was redirected to C:\Program Files\PostgreSQL\... I overcame with this simple import in my code:

import geopandas as gpd
import pyproj
pyproj.datadir.set_data_dir('C:\\Users\\<USERNAME>\\Anaconda3\\envs\\geospatial_env\\Library\\share\\proj') ## set the pyproj data directory

Application code.....

Reinstallation of the packages was not required.

Also as it is mentioned in the docs:

• To get data directory being used: pyproj.datadir.get_data_dir()
• To change the data directory: pyproj.datadir.set_data_dir()