SAS GTL for 'butterfly' plot

gistfile1.txt

  proc template ;
    define statgraph psa_butterfly ;
    begingraph ;
      layout lattice _id='lattice' /  columndatarange = data
                                      columngutter    = 0
                                      rowdatarange    = data
                                      rowgutter       =  10
                                      /* columnweights   = (0.62 0.38) */
                                      columns         = 2 ;
        layout overlay _id='overlay' / yaxisopts  = (gridattrs=(color=CXE8E6E8 pattern=SOLID thickness=1 )
                                                    gridDisplay = on
                                                    display     =(LINE TICKVALUES TICKS))
                                        xaxisopts = (label = '# PSAs 75+'
                                                    reverse = true
                                                    type = linear
                                                    gridDisplay = on )
          barchart _id='bar2' x=PROVIDER y=FRQ / name='bar2' orient = horizontal ;
        endlayout;
        layout overlay _id='overlay2' / yaxisopts=(gridattrs=(color=CXE8E6E8 pattern=SOLID thickness=1 )
                                        gridDisplay=on
                                        display=(LINE ))
                                        xaxisopts=(label="Percent of 75+ males in panel having PSA"
                                                  type=linear
                                                  gridDisplay = on
                                                  );
          barchart _id='bar' x=PROVIDER y= pct_overpsa / name='bar' orient = horizontal ;
        endlayout;
      endlayout;
    endgraph;
  end;