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名师互学网 > IT > 软件开发 > 后端开发 > C/C++/C#

C++ GDQL/OGR库创建点要素的shp文件

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C++ GDQL/OGR库创建点要素的shp文件

#include  //Geometry对象
#include  //Spatial Reference
#include  //Feature Class Definition
#include  //LayerDataSourceDrivers
#include 
int main() {
    CPLSetConfigOption("GDAL_FILENAME_IS_UTF8", "NO");
    CPLSetConfigOption("SHAPE_ENCODING", "UTF-8");
    //OGRRegisterAll();
    GDALAllRegister();
    //OGRSFDriverRegistrar* pRegistrar = OGRSFDriverRegistrar::GetRegistrar();
    //GDALDriver* ogrDriver = pRegistrar->GetDriverByName("ESRI Shapefile");
    GDALDriver* shpDriver = GetGDALDriverManager()->GetDriverByName("ESRI Shapefile");
    if (shpDriver == NULL) {
        printf("%sn", "ESRI Shapefile驱动创建失败!");
        return 0;
    }
    GDALDataset* gdalDataSet = shpDriver->Create("..\shp\TestPoint.shp", 0, 0, 0, GDT_Unknown, NULL);
    cout << gdalDataSet << endl;
    OGRSpatialReference oSR;
    //osr.SetWellKnownGeogCS("WGS84");
    if (oSR.importFromEPSGA(4326) != OGRERR_NONE) {
        printf("%sn", "坐标系创建失败!");
        return -1;
    }
    char** papszOptions = NULL;
    papszOptions = CSLSetNameValue(papszOptions, "ENCODING", "UTF-8");
    OGRLayer* shipLayer = gdalDataSet->CreateLayer("ship", &oSR, wkbPoint, papszOptions);
    
    //创建字段
    OGRFieldDefn idField("ID", OFTInteger);
    idField.SetWidth(8);
    shipLayer->CreateField(&idField);
    OGRFieldDefn nameField("NAME", OFTString);
    nameField.SetWidth(16);
    shipLayer->CreateField(&nameField);
    OGRFieldDefn mmsiField("MMSI", OFTString);
    mmsiField.SetWidth(16);
    shipLayer->CreateField(&mmsiField);
    
    OGRFeature* ogrFeature = OGRFeature::CreateFeature(shipLayer->GetLayerDefn());
    ogrFeature->SetField("ID", 1001);
    ogrFeature->SetField("NAME", "航空母舰");
    ogrFeature->SetField("MMSI", "401956542");
    OGRPoint ogrPointI;
    ogrPointI.setX(1.3);
    ogrPointI.setY(1.6);
    ogrFeature->SetGeometry(&ogrPointI);
    shipLayer->CreateFeature(ogrFeature);
    OGRFeature::DestroyFeature(ogrFeature);

    return 0;
}

打开QGIS查看一下shp文件有什么信息
如果出现乱码,则设置一下QGIS的编码


确实插入了一个点

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