public boolean isNumeric() {
    return (getDataType() != DataType.CHAR) &&
            (getDataType() != DataType.STRING) &&
            (getDataType() != DataType.STRUCTURE);
  }
public boolean isNumeric() {
    return (getDataType() != DataType.CHAR) &&
            (getDataType() != DataType.STRING) &&
            (getDataType() != DataType.STRUCTURE);
  }
public boolean isNumeric ( ) { return ( getDataType ( ) != DataType . CHAR ) && ( getDataType ( ) != DataType . STRING ) && ( getDataType ( ) != DataType . STRUCTURE ) ; }
Does the axis have numeric values.

@return true if the CoordAxis is numeric, false if its string valued ("nominal").
Does the axis have numeric values .