From c6711428d3fc80ed6555c026e77d8976cb41c67e Mon Sep 17 00:00:00 2001
From: Talon Chandler <talonchandler@gmail.com>
Date: Thu, 24 Aug 2023 12:07:21 -0700
Subject: [PATCH] exception -> warning for absent `_xy_pixel_size`

---
 iohub/multipagetiff.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/iohub/multipagetiff.py b/iohub/multipagetiff.py
index 4e23651b..fa5a29b2 100644
--- a/iohub/multipagetiff.py
+++ b/iohub/multipagetiff.py
@@ -306,7 +306,10 @@ def _infer_image_meta(self):
     def xy_pixel_size(self):
         """XY pixel size of the camera in micrometers."""
         if self._xy_pixel_size is None:
-            raise AttributeError("XY pixel size cannot be determined.")
+            logging.warning(
+                "XY pixel size cannot be determined. Returning 1.0 um."
+            )
+            return 1.0
         return self._xy_pixel_size
 
     def _get_dimensions(self, position):