Merge branch 'enhancement/fix_gdal_warning' into 'main'

Enhancement/fix gdal warning

See merge request danschef/arosics!34

HISTORY.rst

@@ -7,6 +7,7 @@ History
 
 * Re-implemented interpolation of tie point attributes into space (!23).
   Three techniques are now supported: RBF, GPR, and Ordinary Kriging. Added scikit-learn to dependencies.
+* Fixed GDAL warning related to PROJ_DATA/PROJ_LIB environment variables (!34).
 
 
 1.8.1 (2023-03-10)

arosics/__init__.py

@@ -27,6 +27,7 @@
 
 import warnings as _warnings
 from pkgutil import find_loader as _find_loader
+import os as __os
 
 from arosics.CoReg import COREG
 from arosics.CoReg_local import COREG_LOCAL
@@ -47,3 +48,10 @@
 # check optional dependencies
 if not _find_loader('pyfftw'):
     _warnings.warn('PYFFTW library is missing. However, coregistration works. But in some cases it can be much slower.')
+
+
+# $PROJ_LIB was renamed to $PROJ_DATA in proj=9.1.1, which leads to issues with fiona>=1.8.20,<1.9
+# https://github.com/conda-forge/pyproj-feedstock/issues/130
+# -> fix it by setting PROJ_DATA
+if 'GDAL_DATA' in __os.environ and 'PROJ_DATA' not in __os.environ and 'PROJ_LIB' not in __os.environ:
+    __os.environ['PROJ_DATA'] = __os.path.join(__os.path.dirname(__os.environ['GDAL_DATA']), 'proj')