<script src="../../codebase/dhtmlxchart.js" type="text/javascript"></script>
<link rel="STYLESHEET" type="text/css" href="../../codebase/dhtmlxchart.css">
<script src="../common/companies.js"></script>
<script>
var barChart;
window.onload = function() {
    barChart = new dhtmlXChart({
        view: "bar",
        container: "chart_container",
        value: "#sales#",
        preset: "alpha",
        label: "#id#",
        padding: {
            bottom: 0;
        },
        sort: {
            by: "#id#",
            as: "string",
            dir: "asc";
        },
        group: {
            by: "#year#",
            map: {
                sales: ["#sales#", "sum"]
                }
        }
    });
    barChart.parse(data, "json");
}
function groupCompany() {
    barChart.group({
        by: "#company#",
        map: {
            sales: ["#sales#", "sum"]
            }
    });
    barChart.refresh();
}
function groupSum() {
    barChart.group({
        by: "#year#",
        map: {
            sales: ["#sales#", "sum"]
            }
    });
}
function groupMax() {
    barChart.group({
        by: "#year#",
        map: {
            sales: ["#sales#", "max"]
            }
    });
}</script>
 
<div id="chart_container" style="width:600px;height:200px;border:1px solid #A4BED4;"></div>
<br/>
<input type="button" name="some_name" value="Group by" onclick="window['group'+document.getElementById('groupby').value]()">
<select name="groupby" id="groupby">
    <option value="Company">company</option>
    <option value="Sum" SELECTED>year (total sales)</option>
    <option value="Max">year (max sales)</option>
</select>