add a data sequence concode_field_sep XySequence data concode_elem_sep String label concode_elem_sep String id concode_elem_sep String yLabel concode_elem_sep String xLabel concode_field_sep XY_DataGroup create
XY_DataGroup function ( String arg0 , String arg1 , XySequence arg2 ) { this . data . add ( new Series ( arg0 , arg1 , arg2 ) ) ; return this ; }