[gdal-dev] OGR API for ESRI Shapefile writer

[Chandra Shekhar Kumar]

Hi All,

 

I was trying to create a shapefile using the code below:

It looks like though the fieldnames are getting created but the values
(I tried just one row) are not getting created:

 

OGRRegisterAll();

    OGRSFDriver *poDriver =
OGRSFDriverRegistrar::GetRegistrar()->GetDriverByName("ESRI Shapefile");

 

    OGRDataSource *poDS = poDriver->CreateDataSource("point_out.shp",
0);

 

    OGRLayer *poLayer = poDS->CreateLayer("point_out", 0, wkbPoint, 0);

 

    OGRFieldDefn oField1("Longitude", OFTReal);

    OGRFieldDefn oField2("Latitude", OFTReal);

    OGRFieldDefn oField3("Speed", OFTReal);

 

    if(poLayer->CreateField(&oField1) != OGRERR_NONE)

    {

        std::cout << "creation of Longitude failed" << std::endl;

        exit(1);

    }

    if(poLayer->CreateField(&oField2) != OGRERR_NONE)

    {

        std::cout << "creation of Latitude failed" << std::endl;

        exit(1);

    }

    if(poLayer->CreateField(&oField3) != OGRERR_NONE)

    {

        std::cout << "creation of Speed failed" << std::endl;

        exit(1);

    }

 

        OGRFeature *poFeature = OGRFeature::CreateFeature(
poLayer->GetLayerDefn() );

        poFeature->SetField("Longitude", 1.1);

        poFeature->SetField("Latitude", 2.2);

        poFeature->SetField("Speed", 3.3);

 

        if( poLayer->CreateFeature( poFeature ) != OGRERR_NONE )

        {

           std::cout <<  "Failed to create feature in shapefile" <<
std::endl;

           exit( 1 );

        }

 

       OGRFeature::DestroyFeature( poFeature );

 

 

Am I missing something basic here ?

 

Thanks,

Chandra


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