From d4721d7b672ee424fabc8659185bdce4307a2d8f Mon Sep 17 00:00:00 2001
From: "Timur A. Fatkhullin" <timur@sao.ru>
Date: Fri, 27 Mar 2026 12:25:36 +0300
Subject: [PATCH] ...

---
 include/mcc/mcc_pcm_construct.h |  4 +++
 tests/mcc_pcm_z1000_test.cpp    | 46 +++++++++++++++++++++++++++++++--
 2 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/include/mcc/mcc_pcm_construct.h b/include/mcc/mcc_pcm_construct.h
index 17a468e..d65beb3 100644
--- a/include/mcc/mcc_pcm_construct.h
+++ b/include/mcc/mcc_pcm_construct.h
@@ -114,6 +114,7 @@ public:
 
         std::vector<double> model_colon{}, model_colat{};  // fitting model values
         std::vector<double> colon_res{}, colat_res{};      // target - model
+        std::vector<double> colon_weight{}, colat_weight;  // Tukey's weights
 
 #ifdef USE_BSPLINE_PCM
         int bspline_fit_err{};  // bivariate B-spline fitting exit code (see FITPACK)
@@ -576,6 +577,9 @@ protected:
         result.colon_res.resize(numberOfPoints());
         result.colat_res.resize(numberOfPoints());
 
+        result.colon_weight = {weights.begin(), weights.begin() + numberOfPoints()};
+        result.colat_weight = {weights.begin() + numberOfPoints(), weights.end()};
+
         for (size_t i = 0; i < numberOfPoints(); ++i) {
             result.colon_res[i] = _table.colon_res[i] - result.model_colon[i];  // = target - model
             result.colat_res[i] = _table.colat_res[i] - result.model_colat[i];  // = target - model
diff --git a/tests/mcc_pcm_z1000_test.cpp b/tests/mcc_pcm_z1000_test.cpp
index bda506c..38d2c06 100644
--- a/tests/mcc_pcm_z1000_test.cpp
+++ b/tests/mcc_pcm_z1000_test.cpp
@@ -16,6 +16,23 @@ int main(int narg, char* argv[])
 
     MccDefaultPCM<MOUNT_TYPE>::pcm_data_t fit_pcm_data;
 
+    size_t haM = 10;   // number of B-spline inner knots along HA-axis
+    size_t decM = 10;  // number of B-spline inner knots along DEC-axis
+
+    double ha_step = 360.0_degs / (haM - 1);
+    fit_pcm_data.bspline.knotsX.resize(haM);  // [0, 360]
+    for (size_t i = 0; i < haM; ++i) {
+        fit_pcm_data.bspline.knotsX[i] = i * ha_step;
+    }
+
+    double dec_start = -25.0_degs;
+    double dec_step = (90.0_degs - dec_start) / (decM - 1);
+    fit_pcm_data.bspline.knotsY.resize(decM);
+    for (size_t i = 0; i < decM; ++i) {
+        fit_pcm_data.bspline.knotsY[i] = dec_start + i * dec_step;
+    }
+
+
     std::ifstream fst;
 
     std::string fname = "z1000_pcm_measu.data";
@@ -63,7 +80,7 @@ int main(int narg, char* argv[])
         return 1;
     }
 
-    std::println("\n\n{:*^40}\n", " FITTED RESULT ");
+    std::println("\n\n{:*^40}\n", " FITTED RESULT (TYPE = GEOMETRY) ");
     std::println("\tNUM OF ITERS: {}", r.final_iter);
 
     std::println("FITTED COEFFS:");
@@ -80,11 +97,36 @@ int main(int narg, char* argv[])
     std::println("\n\n{:*^40}\n", " FITTED DIFFS ");
     auto tab = pcm_cstr.getTable();
     for (size_t i = 0; i < pcm_cstr.numberOfPoints(); ++i) {
-        std::println("{}\t {} {} {:6.2f}%\t{} {} {:6.2f}%", i, MccAngleFancyString(tab.colon_res[i]),
+        std::println("{}     {} {} {:6.2f}% ({:5.3f})      {} {} {:6.2f}% ({:5.3f})", i,
+                     MccAngleFancyString(tab.colon_res[i]), MccAngleFancyString(r.model_colon[i]),
+                     std::abs(r.colon_res[i] / tab.colon_res[i]) * 100.0, r.colon_weight[i],
+                     MccAngleFancyString(tab.colat_res[i]), MccAngleFancyString(r.model_colat[i]),
+                     std::abs(r.colat_res[i] / tab.colat_res[i]) * 100.0, r.colat_weight[i]);
+    }
+
+
+
+    std::println("\n\n{:*^40}\n", " FITTED RESULT (TYPE = BSPLINE) ");
+
+    fit_pcm_data.type = MccDefaultPCMType::PCM_TYPE_BSPLINE;
+
+    r = pcm_cstr.computeModel(fit_pcm_data);
+
+    if (r.error) {
+        std::println("error: {}", r.error.message());
+        std::println("b-spline error: {}", r.bspline_fit_err);
+        return 1;
+    }
+
+    std::println("\n\n{:*^40}\n", " FITTED DIFFS ");
+    for (size_t i = 0; i < pcm_cstr.numberOfPoints(); ++i) {
+        std::println("{}     {} {} {:6.2f}%      {} {} {:6.2f}%", i, MccAngleFancyString(tab.colon_res[i]),
                      MccAngleFancyString(r.model_colon[i]), std::abs(r.colon_res[i] / tab.colon_res[i]) * 100.0,
                      MccAngleFancyString(tab.colat_res[i]), MccAngleFancyString(r.model_colat[i]),
                      std::abs(r.colat_res[i] / tab.colat_res[i]) * 100.0);
     }
 
+
+
     return 0;
 }
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