[gdal-dev] OGR C API Help needed

[Stephen Woodbridge]

Nevermind, all is good. It helps if you execute the new code and not the 
one in the path!  <sigh>

-Steve

On 9/17/2010 7:42 PM, Stephen Woodbridge wrote:
> Hi all,
>
> I am stumped by this. I am trying to copy a shapefile and append a new
> attribute column to it. The loop below adds all the existing fields, but
> the code following does not add the new field. I have been trying to
> figure this out for hours and I assume it is something really stupid
> that I am missing, but ...
>
> I would appreciate a hint on this.
>
> -Steve
>
> /* this loop works fine and adds all the existing fields */
> for( iField = 0; iField < OGR_FD_GetFieldCount(hFDefnIn); iField++ ) {
> OGRFieldDefnH hFieldDefnIn = OGR_FD_GetFieldDefn( hFDefnIn, iField );
> OGRFieldDefnH hFieldDefnOut = OGR_Fld_Create(
> OGR_Fld_GetNameRef(hFieldDefnIn), OFTString );
> OGR_Fld_SetType( hFieldDefnOut, OGR_Fld_GetType(hFieldDefnIn));
> OGR_Fld_SetWidth( hFieldDefnOut, OGR_Fld_GetWidth(hFieldDefnIn));
> OGR_Fld_SetPrecision( hFieldDefnOut, OGR_Fld_GetPrecision(hFieldDefnIn));
>
> if( OGR_L_CreateField( hLayerOut, hFieldDefnOut, TRUE ) != OGRERR_NONE ) {
> printf( "Creating %s field failed.\n", OGR_Fld_GetNameRef(hFieldDefnIn) );
> exit(1);
> }
>
> OGR_Fld_Destroy(hFieldDefnOut);
> }
>
> /* I want to append a new field but it is not written to the
> like the above fields are !!!!
> */
> hFldElevUp = OGR_Fld_Create( "ELEV_UP", OFTString );
> OGR_Fld_SetType( hFldElevUp, OFTReal );
> OGR_Fld_SetWidth( hFldElevUp, 8);
> OGR_Fld_SetPrecision( hFldElevUp, 1);
> if( OGR_L_CreateField( hLayerOut, hFldElevUp, TRUE ) != OGRERR_NONE ) {
> printf( "Creating ELEV_UP field failed.\n");
> exit(1);
> }
> OGR_Fld_Destroy( hFldElevUp );
>
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