const gdcm::DataElement & contourdata = nestedds2.GetDataElement( tcontourdata );
at.SetFromDataElement( contourdata );
const double* points = at.GetValues();
const gdcm::DataElement & contourdata = nestedds2.GetDataElement( tcontourdata );
at.SetFromDataElement( contourdata );
const double* points = at.GetValues();