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C++基于GDAL库读写shp文件的 我自己封装的包含shp读写操作的类，并不完整，留下了一些接口，有兴趣或者有需要的可以自己补充完整头文件shprw.h #include <gdal.h> #include <gdal_priv.h> #include <ogrsf_frmts.h> #include <fstream> #include <iostream> using namespace std; typedef struct XYZInfo { double x; double y; double z; }XYZInfo; class SHP_RW { public: SHP_RW(); ~SHP_RW(); OGRGeometry *poGeometry; OGRLayer *poLayer; int Get_Point(XYZInfo& coordinate); int Get_LineString(vector<XYZInfo>& vecXYZ); int Get_Polygon(vector<XYZInfo>& OuterRing, vector<vector<XYZInfo>>& InteriorRing); int Get_MultiPoint(vector<XYZInfo> Points); int Get_MultiLineString(vector<vector<XYZInfo>> Lines); int Get_MultiPolygon(vector<vector<XYZInfo>>& OuterRingVec, vector<vector<vector<XYZInfo>>>& InteriorRingVec); int Get_GeometryCollection(); // 设置点要素 // 结构体传参 int Set_Point(XYZInfo point, map<string, string> fieldvalue = map<string, string>()) { return Set_Point(point.x, point.y, point.z, fieldvalue); } // x + y (+z) int Set_Point(int x, int y, int z = 0) {return Set_Point(x, y, z, map<string, string>());} // x + y + 属性 int Set_Point(int x, int y, map<string, string> fieldvalue) { return Set_Point(x, y, 0, fieldvalue);} // x + y + z + 属性 int Set_Point(int x, int y, int z, map<string, string> fieldvalue); //设置线要素 // 结构体传参 int Set_LineString(vector<XYZInfo> Line, map<string, string> fieldvalue = map<string, string>()); // x + y (+z) int Set_LineString(vector<double> vecX, vector<double> vecY, vector<double> vecZ = vector<double> ()) { return Set_LineString(vecX, vecY, vecZ, map<string, string>()); } // x + y + 属性 int Set_LineString(vector<double> vecX, vector<double> vecY, map<string, string> fieldvalue) { return Set_LineString(vecX, vecY, vector<double>(), fieldvalue); } // x + y + z + 属性 int Set_LineString(vector<double> vecX, vector<double> vecY, vector<double> vecZ, map<string, string> fieldvalue); // 设置多边形要素 //结构体传参 //1. 外环 + 属性 int Set_Polygon(vector<XYZInfo> OutRingVec, map<string, string> fieldvalue) { return Set_Polygon(OutRingVec, vector<vector<XYZInfo>>(), fieldvalue); } //2. 外环（+ 内环 （+ 属性）） int Set_Polygon(vector<XYZInfo> OutRingVec, vector<vector<XYZInfo>> InteriorRingVec = vector<vector<XYZInfo>>(), map<string, string> fieldvalue = map<string, string>()); int Set_MultiPoint(); int Set_MultiLineString(); int Set_MultiPolygon(); int Set_GeometryCollection(); //定义属性字段 int SetFieldDefn(vector<string> fieldname, vector<OGRFieldType> fieldtype, vector<int> fieldwidth); private: };.cpp文件 shprw.cpp#include "shprw.h" SHP_RW::SHP_RW() { } SHP_RW::~SHP_RW() { } int SHP_RW::Get_Point(XYZInfo& coordinate) { OGRPoint *poPoint = (OGRPoint *)poGeometry; //将几何结构转换成点类型 coordinate.x = poPoint->getX(); coordinate.y = poPoint->getY(); coordinate.z = poPoint->getZ(); return 0; } int SHP_RW::Get_LineString(vector<XYZInfo>& vecXYZ) { OGRLineString* pLineGeo = (OGRLineString*)poGeometry; //将几何结构转换成线类型 int pointnums = pLineGeo->getNumPoints(); XYZInfo tmpxyz; for (int i = 0; i < pointnums; i++) { tmpxyz.x = pLineGeo->getX(i); tmpxyz.y = pLineGeo->getY(i); tmpxyz.z = pLineGeo->getZ(i); vecXYZ.push_back(tmpxyz); } return 0; } //参数1是外环数据，是一个坐标名到坐标值vec的map，参数2是内环数据，比参数1多了一层编号映射 int SHP_RW::Get_Polygon(vector<XYZInfo>& OuterRing, vector<vector<XYZInfo>>& InteriorRing) { OGRPolygon *poPolygon = (OGRPolygon *)poGeometry; //将几何结构转换成多边形类型 OGRLinearRing *pOGRLinearRing = poPolygon->getExteriorRing(); //获取外环数据 XYZInfo outring; for (int i = 0; i < pOGRLinearRing->getNumPoints(); i++) { outring.x = pOGRLinearRing->getX(i); outring.y = pOGRLinearRing->getY(i); outring.z = pOGRLinearRing->getZ(i); OuterRing.push_back(outring); } //获取内环数据（一个外环包含若干个内环） for (int i = 0; i < poPolygon->getNumInteriorRings(); i++) { vector<XYZInfo> Ringvec; pOGRLinearRing = poPolygon->getInteriorRing(i); for (int j = 0; j < pOGRLinearRing->getNumPoints(); j++) { XYZInfo intrring; intrring.x = pOGRLinearRing->getX(j); intrring.y = pOGRLinearRing->getY(j); intrring.z = pOGRLinearRing->getZ(j); Ringvec.push_back(intrring); } InteriorRing.push_back(Ringvec); } return 0; } //点集合 int SHP_RW::Get_MultiPoint(vector<XYZInfo> Points) { OGRMultiPoint *poMultiPoint = (OGRMultiPoint *)poGeometry; //将几何结构转换成点集合类型 for (int i = 0; i < poMultiPoint->getNumGeometries(); i++) { OGRGeometry * geometry = poMultiPoint->getGeometryRef(i); //根据下标获取点集合中的几何（点）结构 OGRPoint *poPoint = (OGRPoint *)geometry; //转换成点类型 XYZInfo point; point.x = poPoint->getX(); point.y = poPoint->getY(); point.z = poPoint->getZ(); Points.push_back(point); } return 0; } //线集合 int SHP_RW::Get_MultiLineString(vector<vector<XYZInfo>> Lines) { OGRMultiLineString* poMultiLine = (OGRMultiLineString *)poGeometry; //将几何结构转换成线集合类型 for (int i = 0; i < poMultiLine->getNumGeometries(); i++) { vector<XYZInfo> Line; OGRGeometry * currtGeometry = poMultiLine->getGeometryRef(i); //根据下标获取对应独立几何（线）结构 OGRLineString* poLine = (OGRLineString*)currtGeometry; //转换成线类型 for (int j = 0; j < poLine->getNumPoints(); j++) { XYZInfo point; point.x = poLine->getX(j); point.y = poLine->getY(j); point.z = poLine->getZ(j); Line.push_back(point); } Lines.push_back(Line); } return 0; } //多边形集合 int SHP_RW::Get_MultiPolygon(vector<vector<XYZInfo>>& OuterRingVec, vector<vector<vector<XYZInfo>>>& InteriorRingVec) { OGRMultiPolygon *MultiPolygon = (OGRMultiPolygon *)poGeometry; //将几何结构转换成多边形集合类型 int NumMPolygon = MultiPolygon->getNumGeometries(); for (int k = 0; k < NumMPolygon; k++) { OGRGeometry * FirstGeometry = MultiPolygon->getGeometryRef(k); //根据下标获取对应独立几何（多边形）结构 OGRPolygon*poPolygon = (OGRPolygon *)FirstGeometry; //转换成多边形类型 OGRLinearRing *pOGRLinearRing = poPolygon->getExteriorRing(); vector<XYZInfo> OuterRing; vector<vector<XYZInfo>> InnerRing; for (int i = 0; i < pOGRLinearRing->getNumPoints(); i++) { XYZInfo tmpinfo; tmpinfo.x = pOGRLinearRing->getX(i); tmpinfo.y = pOGRLinearRing->getY(i); tmpinfo.z = pOGRLinearRing->getZ(i); OuterRing.push_back(tmpinfo); } OuterRingVec.push_back(OuterRing); //获取内环数据（一个外环包含若干个内环） for (int i = 0; i < poPolygon->getNumInteriorRings(); i++) { vector<XYZInfo> InteriorRing; pOGRLinearRing = poPolygon->getInteriorRing(i); for (int j = 0; j < pOGRLinearRing->getNumPoints(); j++) { XYZInfo tmpinfo; tmpinfo.x = pOGRLinearRing->getX(i); tmpinfo.y = pOGRLinearRing->getY(i); tmpinfo.z = pOGRLinearRing->getZ(i); InteriorRing.push_back(tmpinfo); } InnerRing.push_back(InteriorRing); } InteriorRingVec.push_back(InnerRing); } return 0; } int SHP_RW::Get_GeometryCollection() { return 0; } /* *************** 文件写入操作 ********************* */ int SHP_RW::Set_Point(int x, int y, int z, map<string, string> fieldvalue) { OGRFeature *poFeature; if (poLayer == NULL) return -1; poFeature = OGRFeature::CreateFeature(poLayer->GetLayerDefn()); // 根据提供的字段值map对相应字段赋值 for (auto field : fieldvalue) { poFeature->SetField(field.first.c_str(), field.second.c_str()); } OGRPoint point; point.setX(x); point.setY(y); point.setZ(z); poFeature->SetGeometry((OGRGeometry *)(&point)); if (poLayer->CreateFeature(poFeature) != OGRERR_NONE) { printf("Failed to create feature in shapefile.\n"); return -1; } OGRFeature::DestroyFeature(poFeature); return 0; } //线元素 结构体传参 int SHP_RW::Set_LineString(vector<XYZInfo> Line, map<string, string> fieldvalue) { OGRFeature *poFeature; if (poLayer == NULL) return -1; poFeature = OGRFeature::CreateFeature(poLayer->GetLayerDefn()); // 根据提供的字段值map对相应字段赋值 for (auto field : fieldvalue) { poFeature->SetField(field.first.c_str(), field.second.c_str()); } OGRLineString pLine; for (int i = 0; i < Line.size(); i++) pLine.addPoint(Line[i].x, Line[i].y, Line[i].z); poFeature->SetGeometry((OGRGeometry *)(&pLine)); if (poLayer->CreateFeature(poFeature) != OGRERR_NONE) { printf("Failed to create feature in shapefile.\n"); return -1; } OGRFeature::DestroyFeature(poFeature); return 0; } //线元素 参数分别为线要素上的点的x、y、z坐标的vector (z坐标可以没有) int SHP_RW::Set_LineString(vector<double> vecX, vector<double> vecY, vector<double> vecZ, map<string, string> fieldvalue) { OGRFeature *poFeature; if (poLayer == NULL) return -1; poFeature = OGRFeature::CreateFeature(poLayer->GetLayerDefn()); // 根据提供的字段值map对相应字段赋值 for (auto field: fieldvalue) { poFeature->SetField(field.first.c_str(), field.second.c_str()); } OGRLineString pLine; if (vecX.size() == vecY.size()) { if(vecY.size() == vecZ.size()) for (int i = 0; i < vecX.size(); i++) pLine.addPoint(vecX[i], vecY[i], vecZ[i]); else if(vecZ.size() == 0) //z坐标为空 for (int i = 0; i < vecX.size(); i++) pLine.addPoint(vecX[i], vecY[i], 0); poFeature->SetGeometry((OGRGeometry *)(&pLine)); if (poLayer->CreateFeature(poFeature) != OGRERR_NONE) { printf("Failed to create feature in shapefile.\n"); return -1; } } else return -1; OGRFeature::DestroyFeature(poFeature); return 0; } // 多边形图层(可以无内环） int SHP_RW::Set_Polygon(vector<XYZInfo> OuterRing, vector<vector<XYZInfo>> InteriorRingVec, map<string, string> fieldvalue) { try { OGRFeature *poFeature; if (poLayer == NULL) return -1; poFeature = OGRFeature::CreateFeature(poLayer->GetLayerDefn()); // 根据提供的字段值map对相应字段赋值 for (auto field : fieldvalue) { poFeature->SetField(field.first.c_str(), field.second.c_str()); } //polygon OGRPolygon polygon; // 外环 OGRLinearRing ringOut; for (int i = 0; i < OuterRing.size(); i++) { ringOut.addPoint(OuterRing[i].x, OuterRing[i].y, OuterRing[i].z); } //结束点应和起始点相同，保证多边形闭合 ringOut.closeRings(); polygon.addRing(&ringOut); // 内环 for (int i = 0; i < InteriorRingVec.size(); i++) { OGRLinearRing ringIn; for (int j = 0; j < InteriorRingVec[i].size(); j++) { ringIn.addPoint(InteriorRingVec[i][j].x, InteriorRingVec[i][j].y, InteriorRingVec[i][j].z); } ringIn.closeRings(); polygon.addRing(&ringIn); } poFeature->SetGeometry((OGRGeometry *)(&polygon)); if (poLayer->CreateFeature(poFeature) != OGRERR_NONE) { printf("Failed to create feature in shapefile.\n"); return -1; } OGRFeature::DestroyFeature(poFeature); return 0; } catch (std::exception&e) { //LogInfo(FormatLogStr("E", "ImageShp-> " + string(e.what()) + "!")); return -1; } } int SHP_RW::Set_MultiPoint() { return 0; } int SHP_RW::Set_MultiLineString() { return 0; } int SHP_RW::Set_MultiPolygon() { return 0; } int SHP_RW::Set_GeometryCollection() { return 0; } //创建属性字段 int SHP_RW::SetFieldDefn(vector<string> fieldname, vector<OGRFieldType> fieldtype, vector<int> fieldwidth) { for (int i = 0; i < fieldname.size(); i++) { OGRFieldDefn Field(fieldname[i].c_str(), fieldtype[i]); //创建字段 字段+字段类型 Field.SetWidth(fieldwidth[i]); //设置字段宽度，实际操作需要根据不同字段设置不同长度 poLayer->CreateField(&Field); } return 0; } /* *************** 文件写入操作 ********************* */读写示例#include <iostream> #include <gdal.h> #include <gdal_priv.h> #include <ogrsf_frmts.h> #include "SHP_RW.h" #include <streambuf> #include <fstream> #include <ctype.h> #include <math.h> #include <iomanip> using namespace std; //读shp文件 int shpread(const char* file_path_name) { CPLSetConfigOption("GDAL_FILENAME_IS_UTF8", "NO"); // 支持中文路径 CPLSetConfigOption("SHAPE_ENCODING", ""); //属性表支持中文字段 GDALAllRegister(); GDALDataset *poDS = (GDALDataset*)GDALOpenEx(file_path_name, GDAL_OF_VECTOR, NULL, NULL, NULL); if (poDS == NULL) { printf("Open failed.\n"); exit(1); } cout << "Open successfully!" << endl; //获取图层数量 cout << "<--------获取图层数量-------->" << endl; int LayerCount = poDS->GetLayerCount(); cout << "图层数量: " << LayerCount << endl; //获取shp图层 cout << "<--------获取shp图层-------->" << endl; OGRLayer *poLayer = poDS->GetLayer(0); // 根据序号获取相应shp图层，这里表示第一层 //OGRLayer *poLayer = poDS->GetLayerByName("point"); //根据名称获取相应图层 //获取当前图层的属性表结构 cout << "<--------获取当前图层的属性表结构-------->" << endl; OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn(); //重置要素读取顺序 cout << "<--------重置要素读取顺序-------->" << endl; poLayer->ResetReading(); // ResetReading() 函数功能为把要素读取顺序重置为从第一个开始 //设置要素指针 cout << "<--------设置要素指针-------->" << endl; OGRFeature *poFeature; //用于获取图层上的要素 //创建文件存放数据 string shpname = string(file_path_name).substr(string(file_path_name).find_last_of("/") + 1); shpname = shpname.substr(0, shpname.find_last_of(".")) + "_"; string attrfile = "D:/output/" + shpname + "attrfile_shp.txt"; // 属性文件 string datafile = "D:/output/" + shpname + "datafile_shp.txt"; // 数据文件 cout << attrfile << ' ' << datafile << endl; fstream tmpfile(attrfile, ios::out); fstream tmpdatafile(datafile, ios::out); int num = 0; //用于标记第几个要素 while ((poFeature = poLayer->GetNextFeature()) != NULL) { cout << "图层属性->" << endl; for (int iField = 0; iField < poFDefn->GetFieldCount(); iField++) { OGRFieldDefn *poFieldDefn = poFDefn->GetFieldDefn(iField); cout << poFieldDefn->GetNameRef() << ": "; // 属性表字段名 switch (poFieldDefn->GetType()) // 不同数据类型按不同方式，根据字段号获取相应字段的数据 { case OFTInteger: printf("%d,", poFeature->GetFieldAsInteger(iField)); tmpfile << poFeature->GetFieldAsInteger(iField) << "\t"; // 写入文件 break; case OFTInteger64: printf(CPL_FRMT_GIB ",", poFeature->GetFieldAsInteger64(iField)); tmpfile << poFeature->GetFieldAsInteger64(iField) << "\t"; // 写入文件 break; case OFTReal: printf("%.3f,", poFeature->GetFieldAsDouble(iField)); tmpfile << poFeature->GetFieldAsDouble(iField) << "\t"; // 写入文件 break; case OFTString: printf("%s,", poFeature->GetFieldAsString(iField)); tmpfile << poFeature->GetFieldAsString(iField) << "\t"; // 写入文件 break; default: printf("%s,", poFeature->GetFieldAsString(iField)); tmpfile << poFeature->GetFieldAsString(iField) << "\t"; // 写入文件 break; } /*printf("\n");*/ } tmpfile << endl; OGRGeometry *poGeometry = poFeature->GetGeometryRef(); //判断当前要素的几何类型，是否为点图层，利用 getGeometryType() 函数获取要素类型 SHP_RW geo; geo.poGeometry = poGeometry; if (poGeometry != NULL) { auto GeometryType = wkbFlatten(poGeometry->getGeometryType()); // getGeometryType() 返回的类型可能会有2.5D类型，通过宏 wkbFlatten 转换为2D类型 if (GeometryType == wkbPoint) // 1 { //cout << "点图层要素" << endl; XYZInfo Point; geo.Get_Point(Point); //printf("X= %.3f, Y= %.3f, Z= %.3f\n", staX, staY, staZ); tmpdatafile << Point.x << "\t" << Point.y << "\t" << Point.z << endl; // 写入文件 } else if (GeometryType == wkbLineString) // 2 { vector<XYZInfo> Line; tmpdatafile << "<----- 第" + to_string(1 + num++) + "个要素（线） ---->" << endl; geo.Get_LineString(Line); for (int i = 0; i < Line.size(); i++) //printf("X= %.3f, Y= %.3f, Z= %.3f\n", vecX[i], vecY[i], vecZ[i]); tmpdatafile << Line[i].x << "\t" << Line[i].y << "\t" << Line[i].z << endl; // 写入文件 } else if (GeometryType == wkbPolygon) // 3 { //cout << "多边形图层要素" << endl; vector<XYZInfo> OuterRing; vector<vector<XYZInfo>> InteriorRing; geo.Get_Polygon(OuterRing, InteriorRing); // 将数据写入文件 tmpdatafile << "<----- 第" + to_string(1 + num++) + "个要素（多边形） ---->" << endl; tmpdatafile << "外环数据" << endl; //cout << "数据个数：" << OuterRing.size() << endl; for (int j = 0; j < OuterRing.size(); j++) { tmpdatafile << OuterRing[j].x << "\t" << OuterRing[j].y << "\t" << OuterRing[j].z << endl; // 写入文件 } tmpdatafile << "内环数据" << endl; for (int i = 0; i < InteriorRing.size(); i++) { for (int k = 0; k < InteriorRing[i].size(); k++) tmpdatafile << InteriorRing[i][k].x << "\t" << InteriorRing[i][k].y << "\t" << InteriorRing[i][k].z << endl; // 写入文件 tmpdatafile << endl; } } else if (GeometryType == wkbMultiPoint) // 4 { //cout << "点集合图层要素" << endl; vector<XYZInfo> Points; geo.Get_MultiPoint(Points); //将文件写入文件 tmpdatafile << "<----- 第" + to_string(1 + num++) + "个要素（点集合） ---->" << endl; for (int i = 0; i < Points.size(); i++) { tmpdatafile << Points[i].x << "\t" << Points[i].y << "\t" << Points[i].z << endl; // 写入文件 } } else if (GeometryType == wkbMultiLineString) // 5 { //cout << "线集合图层要素" << endl; vector<vector<XYZInfo>> Lines; geo.Get_MultiLineString(Lines); //将文件写入文件 tmpdatafile << "<----- 第" + to_string(1 + num++) + "个要素（线集合） ---->" << endl; for (int i = 0; i < Lines.size(); i++) { tmpdatafile << "线" + to_string(1 + i) << endl; for (int j = 0; j < Lines[i].size(); j++) { tmpdatafile << Lines[i][j].x << "\t" << Lines[i][j].y << "\t" << Lines[i][j].z << endl; // 写入文件 } } } else if (GeometryType == wkbMultiPolygon) // 6 { //cout << "多边形集合图层要素" << endl; //获取数据 vector<vector<XYZInfo>> OuterRingVec; vector<vector<vector<XYZInfo>>> InteriorRingVec; geo.Get_MultiPolygon(OuterRingVec, InteriorRingVec); // 将数据写入文件 OGRMultiPolygon *MultiPolygon = (OGRMultiPolygon *)poGeometry; int NumMPolygon = MultiPolygon->getNumGeometries(); vector<XYZInfo> xyz; tmpdatafile << "<----- 第" + to_string(1 + num++) + "个要素（多边形集合） ---->" << endl; for (int k = 0; k < OuterRingVec.size(); k++) { tmpdatafile << "外环" + to_string(k) << endl; for (int j = 0; j < OuterRingVec[k].size(); j++) { tmpdatafile << OuterRingVec[k][j].x << "\t" << OuterRingVec[k][j].y << "\t" << OuterRingVec[k][j].z << endl; // 写入文件 } for (int i = 0; i < InteriorRingVec[k].size(); i++) { tmpdatafile << "内环" + to_string(i+1) << endl; for (int j = 0; j < InteriorRingVec[k][i].size(); j++) tmpdatafile << InteriorRingVec[k][i][j].x << "\t" << InteriorRingVec[k][i][j].y << "\t" << InteriorRingVec[k][i][j].z << endl; // 写入文件 } tmpdatafile << endl; } } else if (GeometryType == wkbGeometryCollection) // 7 { cout << "几何体集合图层要素" << endl; } else if (GeometryType == wkbNone) { cout << "该数据只有属性表" << endl; } } else { printf("no geometry\n"); } OGRFeature::DestroyFeature(poFeature); } tmpfile.close(); GDALClose(poDS); return 0; } // 写shp文件 int shpwrite(const char* file_path_name) { CPLSetConfigOption("GDAL_FILENAME_IS_UTF8", "NO"); // 支持中文路径 CPLSetConfigOption("SHAPE_ENCODING", ""); //属性表支持中文字段 //注册所有驱动 OGRRegisterAll(); const char *pszDriverName = "ESRI Shapefile"; GDALDriver *poDriver; poDriver = GetGDALDriverManager()->GetDriverByName(pszDriverName); if (poDriver == NULL) { printf("%s driver not available.\n", pszDriverName); return 0; } //创建数据源 GDALDataset *poDS; poDS = poDriver->Create(file_path_name, 0, 0, 0, GDT_Unknown, NULL); //创建shp文件 if (poDS == NULL) { printf("Creation of output file failed.\n"); return 0; } OGRLayer *poLayer; SHP_RW write_shp; //OGRwkbGeometryType layertype; //layertype = wkbPolygon; string layertype = "多边形"; vector<string> fieldname = { "ID", "NAME", "VALUE" }; vector<OGRFieldType> fieldtype = { OFTInteger, OFTString, OFTReal }; vector<int> fieldwidth = { 32, 32, 32 }; if (layertype == "点") { // 创建图层，这里没有指定空间参考，如果需要的话，需要在这里进行指定 poLayer = poDS->CreateLayer("point_out", NULL, wkbPoint, NULL); write_shp.poLayer = poLayer; write_shp.SetFieldDefn(fieldname, fieldtype, fieldwidth); map<string, string> testpoint = { {"ID", "1"}, {"NAME", "FFF"},{"VALUE", "1"} }; // 属性值 write_shp.Set_Point(100,30, 0, testpoint); //write_shp.Set_Point(100, 30); // 没有z坐标或属性值可以不传入 } else if (layertype == "线") { poLayer = poDS->CreateLayer("string_out", NULL, wkbLineString, NULL); write_shp.poLayer = poLayer; write_shp.SetFieldDefn(fieldname, fieldtype, fieldwidth); //vector<double> xvec = { 100, 30 }, yvec = { 101, 30 }, zvec; //线上的点的x、y、z坐标的集合, 根据需求自己进行赋值 vector<XYZInfo> Line = { {100, 30},{101, 30} }; map<string, string> testline = { {"ID", "2"}, {"NAME", "FFF"},{"VALUE", "2"} }; // 属性值 write_shp.Set_LineString(Line, testline); //write_shp.Set_LineString(xvec, yvec); // 没有z坐标或属性值可以不传入 } else if (layertype == "多边形") { poLayer = poDS->CreateLayer("polygon_out", NULL, wkbPolygon, NULL); write_shp.poLayer = poLayer; write_shp.SetFieldDefn(fieldname, fieldtype, fieldwidth); vector<XYZInfo> OuterRing; vector<vector<XYZInfo>> InteriorRing; map<string, string> testpolygon = { {"ID", "3"}, {"NAME", "FFF"},{"VALUE", "3"} }; // 属性值 write_shp.Set_Polygon(OuterRing, InteriorRing, testpolygon); //write_shp.Set_Polygon(OuterRing); // 内环和属性值没有的话可以不传入 } else if (layertype == "点集合") { } else if (layertype == "线集合") { } else if (layertype == "多边形集合") { } GDALClose(poDS); return 0; } int main() { shpread("1.shp"); system("pause"); return 0; }
