private DataType getCoordinateType() {
    List<Dataset> nestedDatasets = getDatasets();
    DatasetOuterDimension first = (DatasetOuterDimension) nestedDatasets.get(0);
    return first.isStringValued ? DataType.STRING : DataType.DOUBLE;
  }
private DataType getCoordinateType() {
    List<Dataset> nestedDatasets = getDatasets();
    DatasetOuterDimension first = (DatasetOuterDimension) nestedDatasets.get(0);
    return first.isStringValued ? DataType.STRING : DataType.DOUBLE;
  }
private DataType getCoordinateType ( ) { List < Dataset > nestedDatasets = getDatasets ( ) ; DatasetOuterDimension first = ( DatasetOuterDimension ) nestedDatasets . get ( 0 ) ; return first . isStringValued ? DataType . STRING : DataType . DOUBLE ; }
What is the data type of the aggregation coordinate ?

@return the data type of the aggregation coordinate
What is the data type of the aggregation coordinate ?