From 5c27a835df9de9ca04998e7afaddc0621d120c28 Mon Sep 17 00:00:00 2001
From: Piero Toffanin <pt@masseranolabs.com>
Date: Mon, 8 Apr 2019 23:24:58 -0400
Subject: [PATCH] Raise exception instead of return precondition

---
 opendm/location.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/opendm/location.py b/opendm/location.py
index 5229d313..4e5726b9 100644
--- a/opendm/location.py
+++ b/opendm/location.py
@@ -12,8 +12,7 @@ def extract_utm_coords(photos, images_path, output_coords_file):
     :return None
     """
     if len(photos) == 0:
-        log.ODM_ERROR("No input images, cannot create coordinates file of GPS positions")
-        return
+        raise Exception("No input images, cannot create coordinates file of GPS positions")
     
     utm_zone = None
     hemisphere = None