jplot.js

  $(function () {

    $.plot("#placeholder", [{
                                    label: "Abiertos",
                                    data: abiertos
                            }, {
                                    label: "Cerrados",
                                    data: cerrados
                            }], {
                                    series: {
                                        stack: null,
                                        bars: {
                                            show: true,
                                            barWidth: 0.3,
                                            align: "center"
                                        }
                                    },
                                    xaxis: {
                                        mode: "categories",
                                        tickLength: 0
                                    },
                                    legend: {
                                        position: "se",
                                        container: "#legend"
                                    }
     });
 });