MNT #321 also for UB

bluesky · Feb 8, 2025 · 15d06c3 · 15d06c3
1 parent 74159ae
commit 15d06c3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hkl/configuration.py b/hkl/configuration.py
@@ -238,7 +238,7 @@ class DCSample:
     reflections: List[DCReflection]
     """List of orientation reflections."""
 
-    UB: List[List[float]]
+    UB: List[List[float]] = field(default_factory=lambda: [[]])
     """
     Orientation matrix (3 x 3).  U is the crystal orientation matrix relative
     to the diffractometer and B is the transition matrix of a non-orthonormal