diff --git a/common/DiffractionExperiment.cpp b/common/DiffractionExperiment.cpp
index ca2f4c46..bfeda9a2 100644
--- a/common/DiffractionExperiment.cpp
+++ b/common/DiffractionExperiment.cpp
@@ -1642,3 +1642,7 @@ int64_t DiffractionExperiment::GetDarkMaskNumberOfFrames() const {
         return GetDarkMaskSettings().GetNumberOfFrames();
     return 0;
 }
+
+bool DiffractionExperiment::IsRotationIndexing() const {
+    return GetGoniometer().has_value() && indexing.GetRotationIndexing();
+}
diff --git a/common/DiffractionExperiment.h b/common/DiffractionExperiment.h
index ab35096f..ffd2149e 100644
--- a/common/DiffractionExperiment.h
+++ b/common/DiffractionExperiment.h
@@ -404,6 +404,8 @@ public:
 
     bool IsDetectIceRings() const;
     int64_t GetDarkMaskNumberOfFrames() const;
+
+    bool IsRotationIndexing() const;
 };
 
 #endif //DIFFRACTIONEXPERIMENT_H