DHTMLX Docs & Samples Explorer

### Colors: color gradient

The color of Bar Chart can be defined by gradient property.
In this case you should set a function that takes a gradient object as an argument. And using addColorStop you may define colors for chart.

Source

    <script src="../../codebase/dhtmlxchart.js" type="text/javascript"></script>
    <link rel="STYLESHEET" type="text/css" href="../../codebase/dhtmlxchart.css">

    <style>
        .dhx_chart_title{
            padding-left:3px
        }
    </style>
    <script>var data = [{
        sales: "2.9",
        year: "2000"
    }, {
        sales: "3.5",
        year: "2001"
    }, {
        sales: "3.1",
        year: "2002"
    }, {
        sales: "4.2",
        year: "2003"
    }, {
        sales: "4.5",
        year: "2004"
    }, {
        sales: "9.6",
        year: "2005"
    }, {
        sales: "7.4",
        year: "2006"
    }, {
        sales: "9.0",
        year: "2007"
    }, {
        sales: "7.3",
        year: "2008"
    }, {
        sales: "4.8",
        year: "2009"
    }];
    window.onload = function() {
        var barChart = new dhtmlXChart({
            view: "bar",
            container: "chart_container",
            value: "#sales#",
            label: "#year#",
            padding: {
                bottom: 0,
                right: 0,
                left: 0;
            },
            width: 30,
            gradient: function(gradient) {
                gradient.addColorStop(1.0, "#FF0000");
                gradient.addColorStop(0.2, "#FFFF00");
                gradient.addColorStop(0.0, "#00FF22");
            }
        });
        barChart.parse(data, "json");
    }</script>

    <div id="chart_container" style="width:500px;height:300px;border:1px solid #A4BED4;"></div>
    <script>var data = [{
        sales: "2.9",
        year: "2000"
    }, {
        sales: "3.5",
        year: "2001"
    }, {
        sales: "3.1",
        year: "2002"
    }, {
        sales: "4.2",
        year: "2003"
    }, {
        sales: "4.5",
        year: "2004"
    }, {
        sales: "9.6",
        year: "2005"
    }, {
        sales: "7.4",
        year: "2006"
    }, {
        sales: "9.0",
        year: "2007"
    }, {
        sales: "7.3",
        year: "2008"
    }, {
        sales: "4.8",
        year: "2009"
    }];
    var barChart = new dhtmlXChart({
        view: "bar",
        container: "chart_container",
        value: "#sales#",
        label: "#year#",
        padding: {
            bottom: 0,
            right: 0,
            left: 0;
        },
        width: 30,
        gradient: function(gradient) {
            gradient.addColorStop(1.0, "#FF0000");
            gradient.addColorStop(0.2, "#FFFF00");
            gradient.addColorStop(0.0, "#00FF22");
        }
    });
    barChart.parse(data, "json");</script>