1 files changed, 8 insertions, 0 deletions
diff --git a/common.py b/common.py
index b46840f..67ab208 100644
--- a/common.py
+++ b/common.py
@@ -135,6 +135,14 @@ def load_config(path=None, groupnames=None):
         layers = { name: layers[name] for name in layernames }
 
     config['layers'] = layers
+
+    extent = config.get('extent', None)
+    if extent is not None:
+        if isinstance(extent, list):
+            config['extent'] = tuple(extent)
+        if config.get('SRS', None) is None:
+            raise Exception('Configured extent without SRS')
+
     sys.modules[__name__].config = config
 
 def format_bytes(n):