From 976d3ad1bdd35bae59ad4db490158571f32dd495 Mon Sep 17 00:00:00 2001
From: "clemens.schmid@esrf.fr" <clemens.schmid@esrf.fr>
Date: Tue, 25 Aug 2026 10:54:45 +0200
Subject: [PATCH 1/2] Add method GetRwHistory to lsq

turns internal std::vector<REAL> into Python list
---
 src/extensions/lsq_ext.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/extensions/lsq_ext.cpp b/src/extensions/lsq_ext.cpp
index b63d104..694960f 100644
--- a/src/extensions/lsq_ext.cpp
+++ b/src/extensions/lsq_ext.cpp
@@ -45,6 +45,15 @@ bool _SafeRefine(LSQNumObj & lsq, REAL maxChi2factor, int nbCycle, bool useLeven
                           callBeginEndOptimization, minChi2var);
 }
 
+bp::list _GetRwHistory(const LSQNumObj & lsq)
+{
+    bp::list out;
+    const std::vector<REAL> & h = lsq.GetRwHistory();
+    for (std::vector<REAL>::const_iterator it = h.begin(); it != h.end(); ++it)
+        out.append(*it);
+    return out;
+}
+
 }   // namespace
 
 void wrap_lsq()
@@ -81,6 +90,7 @@ void wrap_lsq()
                  bp::arg("minChi2var")=0.01))
         .def("Rfactor", &LSQNumObj::Rfactor)
         .def("RwFactor", &LSQNumObj::RwFactor)
+        .def("GetRwHistory", &_GetRwHistory)
         .def("ChiSquare", &LSQNumObj::ChiSquare)
         .def("SetRefinedObj", &LSQNumObj::SetRefinedObj,
                 (bp::arg("obj"), bp::arg("LSQFuncIndex")=0,

From 8a2b9856f1d991a5e3f0b42b985a2ed5c7991928 Mon Sep 17 00:00:00 2001
From: Clemens Schmid <clem.schmid@gmail.com>
Date: Tue, 25 Aug 2026 13:48:02 +0200
Subject: [PATCH 2/2] add news file

---
 news/rw_history.rst | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 news/rw_history.rst

diff --git a/news/rw_history.rst b/news/rw_history.rst
new file mode 100644
index 0000000..a348487
--- /dev/null
+++ b/news/rw_history.rst
@@ -0,0 +1,23 @@
+**Added:**
+
+* Add method ``GetRwHistory`` on LSQ object to get history of Rw values through one run of ``lsq.Refine()``.
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>