From efdd1751489dd16212a1df5a9461bb3f8415dd2a Mon Sep 17 00:00:00 2001
From: Dugal Harris <dugalh@gmail.com>
Date: Sun, 8 Oct 2023 12:47:57 +0200
Subject: [PATCH] set env vars to auto-download proj transformation grids

---
 simple_ortho/__init__.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/simple_ortho/__init__.py b/simple_ortho/__init__.py
index 196f279..9f9db73 100644
--- a/simple_ortho/__init__.py
+++ b/simple_ortho/__init__.py
@@ -14,13 +14,15 @@
    limitations under the License.
 """
 
-import logging
 import os
 import pathlib
-import sys
 
+# enable on-demand download of proj transformation grids
+os.environ.update(PROJ_NETWORK='ON', PROJ_ONLY_BEST_DEFAULT='ON', ALLOW_ELLIPSOIDAL_HEIGHT_AS_VERTICAL_CRS='NO')
+
+# path to package root
 if '__file__' in globals():
     root_path = pathlib.Path(__file__).absolute().parents[1]
 else:
-    root_path = pathlib.Path(os.getcwd())
+    root_path = pathlib.Path.cwd().absolute()