The SHELX HKLF 4 file now has one record per full reflection - its partials summed,
the per-frame scale and every correction applied, sigma(I) as the merge weighted it -
at the index it was measured at, not averaged with its equivalents: the chemical
crystallographer's convention, so SHELXL computes Rint and Rsigma itself. Outliers
the merge rejected and fulls beyond its resolution cut are left out; no batch column
(it would select a BASF scale in SHELXL). The engine hands the fulls back only for a
merge that may be written (RotationScaleMerge::SetExportScaledFulls), so the search
merges, the pre-pass and the P1 cross-check carry no copy; the fulls follow the same
relabelling as the merged reflections (merge_to_written). Stills keep the merged
file. --mode scale writes the unmerged form too.
Validation: p.mtz md5 unchanged on myob/cytc/thau (GPU). SHELXL on the same runs,
merged-old vs unmerged-new (COD models, harness /data/tmp/sm_shared):
aspirin 20 keV Rint 0 -> 0.071, Rsigma 0.036 -> 0.043, R1 0.0964 -> 0.0969,
wR2 0.312 -> 0.310, GooF 1.53 -> 1.47; HEPES 20 keV Rint 0 -> 0.163, Rsigma 0.057
-> 0.068, R1 0.0903 -> 0.0897, wR2 0.318 -> 0.263, GooF 1.57 -> 1.10; the "input
data appear to be merged" warning is gone.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K5K8jvPPbmCrbqnWkddTuB
leonarski_fandClaude Opus 5.5
9874db5d7f