src/app/CMakeLists.txt

@@ -107,6 +107,7 @@ add_executable(geopro_desktop WIN32
   VolumePropertiesDialog.cpp
   Logging.cpp
   DatasetDimension.cpp
+  DatasetCategory.cpp
   TileBasemap.cpp)
 
 target_include_directories(geopro_desktop PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})

src/app/DatasetCategory.cpp

@@ -0,0 +1,22 @@
+#include "DatasetCategory.hpp"
+
+namespace geopro::app {
+
+CategoryBuckets splitByCategory(const std::vector<geopro::data::DsRow>& rows) {
+    const auto& cfg = categoryConfigs();
+    CategoryBuckets b;
+    b.segments.resize(cfg.size());
+    for (const auto& r : rows) {
+        int hit = -1;
+        // 先按 ddCode（三维体/切片）——它们无 dsTypeCode（来自 Api3dRepository mock 行）。
+        for (std::size_t i = 0; i < cfg.size() && hit < 0; ++i)
+            if (!cfg[i].ddCode.empty() && r.ddCode == cfg[i].ddCode) hit = static_cast<int>(i);
+        // 再按 dsTypeCode。
+        for (std::size_t i = 0; i < cfg.size() && hit < 0; ++i)
+            if (!cfg[i].dsTypeCode.empty() && r.dsTypeCode == cfg[i].dsTypeCode) hit = static_cast<int>(i);
+        if (hit >= 0) b.segments[static_cast<std::size_t>(hit)].push_back(r);
+    }
+    return b;
+}
+
+}  // namespace geopro::app

src/app/DatasetCategory.hpp

@@ -0,0 +1,16 @@
+#pragma once
+#include <vector>
+#include "repo/CategoryConfig.hpp"
+#include "repo/RepoTypes.hpp"
+
+namespace geopro::app {
+
+struct CategoryBuckets {
+    std::vector<std::vector<geopro::data::DsRow>> segments;  // 与 categoryConfigs() 同序同长
+};
+
+// 按 CategoryConfig 把 ds 分入大类段：先判 ddCode 白名单(三维体/切片)，否则按 dsTypeCode 匹配；
+// 不在表内的丢弃（接地电阻/原始数据/白化/坐标等）。保留原顺序。
+CategoryBuckets splitByCategory(const std::vector<geopro::data::DsRow>& rows);
+
+}  // namespace geopro::app

src/data/repo/CategoryConfig.hpp

@@ -0,0 +1,29 @@
+#pragma once
+#include <string>
+#include <vector>
+
+namespace geopro::app {
+
+// 一个数据类型大类段的配置（spec §5）。识别键二选一：dsTypeCode 优先；ddCode 用于三维体/切片。
+struct CategorySpec {
+    std::string id;             // 段稳定 id
+    std::string title;          // 段标题（UI 显示）
+    std::string dsTypeCode;     // 主识别键（空=不按 dsTypeCode）
+    std::string ddCode;         // 次识别键（dd_voxel/dd_slice；空=不按 ddCode）
+    bool canGenerateVolume;     // 段内是否提供「生成三维体」入口（仅反演类）
+    bool hasArrayTypeFilter;    // 段头是否显示装置类型筛选（仅 ERT 类）
+};
+
+// 5 段固定有序（spec §5 表）。
+inline const std::vector<CategorySpec>& categoryConfigs() {
+    static const std::vector<CategorySpec> kCfg = {
+        {"resistivity", "电阻率数据",   "ERT platform inversion data",            "",         true,  true},
+        {"apparent",    "视电阻率数据", "visual resistivity data",                "",         true,  true},
+        {"transient",   "瞬变电磁数据", "DD TRANSIENT ELECTROMAGNETIC INVERSION", "",         true,  false},
+        {"voxel",       "三维体",       "",                                       "dd_voxel", false, false},
+        {"slice",       "切片",         "",                                       "dd_slice", false, false},
+    };
+    return kCfg;
+}
+
+}  // namespace geopro::app

tests/CMakeLists.txt

@@ -168,6 +168,11 @@ target_sources(geopro_tests PRIVATE
     app/test_dataset_dimension.cpp
     ${CMAKE_SOURCE_DIR}/src/app/DatasetDimension.cpp
 )
+# 大类分类纯函数（splitByCategory: dsTypeCode/ddCode -> 5 个数据类型大类段，无 Qt/VTK 依赖）。
+target_sources(geopro_tests PRIVATE
+    app/test_dataset_category.cpp
+    ${CMAKE_SOURCE_DIR}/src/app/DatasetCategory.cpp
+)
 # measurement 散点纯逻辑（值类型变换 / 显隐 id 收集 / 过滤体 / 另存体，Qt6::Core JSON + core model）。
 target_sources(geopro_tests PRIVATE
     app/test_scatter_data_ops.cpp

tests/app/test_dataset_category.cpp

@@ -0,0 +1,47 @@
+#include <gtest/gtest.h>
+#include "DatasetCategory.hpp"
+using geopro::data::DsRow;
+using namespace geopro::app;
+
+namespace {
+DsRow row(const std::string& id, const std::string& ddCode, const std::string& dsTypeCode) {
+    DsRow r;
+    r.id = id;
+    r.ddCode = ddCode;
+    r.dsTypeCode = dsTypeCode;
+    return r;
+}
+}  // namespace
+
+TEST(SplitByCategory, RoutesByDsTypeCodeAndDdCode) {
+    std::vector<DsRow> rows = {
+        row("a", "dd_inversion_data", "ERT platform inversion data"),             // 电阻率
+        row("b", "dd_inversion_data", "visual resistivity data"),                 // 视电阻率
+        row("c", "dd_inversion_data", "DD TRANSIENT ELECTROMAGNETIC INVERSION"),  // 瞬变
+        row("v", "dd_voxel", ""),                                                 // 三维体(按 ddCode)
+        row("s", "dd_slice", ""),                                                 // 切片(按 ddCode)
+        row("x", "dd_ert_measurement_gr_data", "earth resistance"),              // 接地电阻 → 丢弃
+    };
+    const CategoryBuckets b = splitByCategory(rows);
+    ASSERT_EQ(b.segments.size(), categoryConfigs().size());
+    EXPECT_EQ(b.segments[0].size(), 1u); EXPECT_EQ(b.segments[0][0].id, "a");
+    EXPECT_EQ(b.segments[1].size(), 1u); EXPECT_EQ(b.segments[1][0].id, "b");
+    EXPECT_EQ(b.segments[2].size(), 1u); EXPECT_EQ(b.segments[2][0].id, "c");
+    EXPECT_EQ(b.segments[3].size(), 1u); EXPECT_EQ(b.segments[3][0].id, "v");
+    EXPECT_EQ(b.segments[4].size(), 1u); EXPECT_EQ(b.segments[4][0].id, "s");
+    // 接地电阻不进任何段。
+    std::size_t total = 0;
+    for (auto& s : b.segments) total += s.size();
+    EXPECT_EQ(total, 5u);
+}
+
+TEST(SplitByCategory, PreservesOrderWithinSegment) {
+    std::vector<DsRow> rows = {
+        row("a1", "dd_inversion_data", "ERT platform inversion data"),
+        row("a2", "dd_inversion_data", "ERT platform inversion data"),
+    };
+    const CategoryBuckets b = splitByCategory(rows);
+    ASSERT_EQ(b.segments[0].size(), 2u);
+    EXPECT_EQ(b.segments[0][0].id, "a1");
+    EXPECT_EQ(b.segments[0][1].id, "a2");
+}