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jbeilstenedmands · May 21, 2024 · 310747b · 310747b
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diff --git a/newsfragments/XXX.bugfix b/newsfragments/XXX.bugfix
@@ -0,0 +1 @@
+``dials.cosym``: Make function return structure correct in recently added cc_weights option
diff --git a/src/dials/algorithms/scaling/scaling_library.py b/src/dials/algorithms/scaling/scaling_library.py
@@ -522,7 +522,7 @@ def weighted_cchalf(
             sx = flex.sum(flex.pow2(dx) * norm_jw)
             sy = flex.sum(flex.pow2(dy) * norm_jw)
             if sx == 0.0 or sy == 0.0:
-                return [(None, 0)]
+                return [(None, 1)]
             # effective sample size of weighted sample
             # Kish, Leslie. 1965. Survey Sampling New York: Wiley. (R documentation)
             # neff = sum(w)^2 / sum(w^2). But sum(w) == 1 as normalised already
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		@@ -0,0 +1 @@
		``dials.cosym``: Make function return structure correct in recently added cc_weights option