dropDown.on("change", function () {
                var selected = this.value;
                displayOthers = this.checked ? "inline" : "none";
                display = this.checked ? "none" : "inline";

                hGsvg.selectAll(".bar").data(data[this.value])
                    .filter(function() {return (selected != sF) ;})
                    .attr("display", displayOthers);


                hGsvg.selectAll(".bar").data(data[this.value])
                    .filter(function() {return (selected == sF) ;})
                    .attr("display", display);

                console.log(selected);

            });