Javascript 用动态图绘制叠层图

我想使用JavaScript库绘制一个堆叠图，我在下面已经完成了。但是我希望每一条线都有不同的颜色。两种颜色，如深色的条形顶部和浅色的底部，如下所示：

请建议如何为动态图像传递不同的颜色。
以下是我目前掌握的情况：

功能条形图绘图仪（e）{
var ctx=e.drawingContext；
var点=e点；
var y_bottom=e.dygraph.toDomYCoord（0）；//请参见
//这实际上应该以最小间隙为基础
变量栏宽度=2/3*（点[1]。canvasx-点[0]。canvasx）；
ctx.fillStyle=e.color；//浅色可能更美观
//进行实际绘图。
对于（变量i=0；i
/*
相关CSS类包括：
X轴和Y轴上的标签：
.动态图轴标签
.dygraph-axis-label-x
.dygraph-axis-label-y
.dygraph-axis-label-y2
图表标签，请参见http://dygraphs.com/tests/styled-chart-labels.html
.动态图标题
.dygraph xlabel
.DYLABEL
.dygraph-y2label
图例，请参见http://dygraphs.com/tests/series-highlight.html
.动态图表图例
*/
.动态图标题{
颜色：灰色；
}

以下是添加不同颜色的代码：

<div id="graph"></div>

function barChartPlotter(e) {
var myColor = ["#ECD078", "#D95B43", "#C02942", "#542437", "#53777A", "#42d7f4", "red", "green"];
var ctx = e.drawingContext;
var points = e.points;
var y_bottom = e.dygraph.toDomYCoord(0); 

// This should really be based on the minimum gap
var bar_width = 2 / 3 * (points[1].canvasx - points[0].canvasx);
// a lighter shade might be more aesthetically pleasing

// Do the actual plotting.
for (var i = 0; i < points.length; i++) {
    var p = points[i];
    var center_x = p.canvasx; // center of the bar
    ctx.fillStyle = myColor[i];
    ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
    ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
}}
g = new Dygraph(document.getElementById("graph"),
"X,Y\n" +
"1,2\n" +
"2,4\n" +
"3,6\n" +
"4,8\n" +
"5,10\n" +
"6,12\n" +
"7,14\n" +
"8,16\n", {
    // options go here. See http://dygraphs.com/options.html
    legend: 'always',
    animatedZooms: true,
    plotter: barChartPlotter,
    dateWindow: [0, 9]
});


功能柱状图绘图仪（e）{
var myColor=[“ECD078”、“D95B43”、“C02942”、“542437”、“53777A”、“42d7f4”、“红色”、“绿色”]；
var ctx=e.drawingContext；
var点=e点；
变量y_bottom=e.dygraph.toDomYCoord（0）；
//这实际上应该以最小间隙为基础
变量栏宽度=2/3*（点[1]。canvasx-点[0]。canvasx）；
//浅色可能更美观
//进行实际绘图。
对于（变量i=0；i
以下是添加不同颜色的代码：

<div id="graph"></div>

function barChartPlotter(e) {
var myColor = ["#ECD078", "#D95B43", "#C02942", "#542437", "#53777A", "#42d7f4", "red", "green"];
var ctx = e.drawingContext;
var points = e.points;
var y_bottom = e.dygraph.toDomYCoord(0); 

// This should really be based on the minimum gap
var bar_width = 2 / 3 * (points[1].canvasx - points[0].canvasx);
// a lighter shade might be more aesthetically pleasing

// Do the actual plotting.
for (var i = 0; i < points.length; i++) {
    var p = points[i];
    var center_x = p.canvasx; // center of the bar
    ctx.fillStyle = myColor[i];
    ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
    ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
}}
g = new Dygraph(document.getElementById("graph"),
"X,Y\n" +
"1,2\n" +
"2,4\n" +
"3,6\n" +
"4,8\n" +
"5,10\n" +
"6,12\n" +
"7,14\n" +
"8,16\n", {
    // options go here. See http://dygraphs.com/options.html
    legend: 'always',
    animatedZooms: true,
    plotter: barChartPlotter,
    dateWindow: [0, 9]
});


功能柱状图绘图仪（e）{
var myColor=[“ECD078”、“D95B43”、“C02942”、“542437”、“53777A”、“42d7f4”、“红色”、“绿色”]；
var ctx=e.drawingContext；
var点=e点；
变量y_bottom=e.dygraph.toDomYCoord（0）；
//这实际上应该以最小间隙为基础
变量栏宽度=2/3*（点[1]。canvasx-点[0]。canvasx）；
//浅色可能更美观
//进行实际绘图。
对于（变量i=0；i
以下是为同一条添加两种不同颜色的代码：

<div id="graph"></div>
    function barChartPlotter(e) {
    var myColor = ["#ECD078", "#D95B43", "#C02942", "#542437", "#53777A", "#42d7f4", "red", "green"];
    var myColor1 = ["black", "red", "green", "#ECD078", "#D95B43", "#C02942", "#542437", "#53777A"];
    var ctx = e.drawingContext;
    var points = e.points;
    var y_bottom = e.dygraph.toDomYCoord(0);

    // This should really be based on the minimum gap
    var bar_width = 2 / 3 * (points[1].canvasx - points[0].canvasx);
    // a lighter shade might be more aesthetically pleasing

    // Do the actual plotting.
    for (var i = 0; i < points.length; i++) {
        var p = points[i];
        var center_x = p.canvasx; // center of the bar
        ctx.fillStyle = myColor[i];
        ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
        ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
    }
    for (var i = 0; i < points.length; i++) {
        var p = points[i];
        console.log(points[1]);
        var center_x = p.canvasx; // center of the bar
        ctx.fillStyle = myColor1[i];
        ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, (y_bottom - p.canvasy) / 2);
        ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, (y_bottom - p.canvasy) / 2);
    }
}
g = new Dygraph(document.getElementById("graph"),
    "X,Y\n" +
    "1,2\n" +
    "2,4\n" +
    "3,6\n" +
    "4,8\n" +
    "5,10\n" +
    "6,12\n" +
    "7,14\n" +
    "8,16\n", {
        // options go here. See http://dygraphs.com/options.html
        legend: 'always',
        animatedZooms: true,
        plotter: barChartPlotter,
        dateWindow: [0, 9]
    });


功能柱状图绘图仪（e）{
var myColor=[“ECD078”、“D95B43”、“C02942”、“542437”、“53777A”、“42d7f4”、“红色”、“绿色”]；
变量myColor1=[“黑色”、“红色”、“绿色”、“ECD078”、“D95B43”、“C02942”、“542437”、“53777A”]；
var ctx=e.drawingContext；
var点=e点；
变量y_bottom=e.dygraph.toDomYCoord（0）；
//这实际上应该以最小间隙为基础
变量栏宽度=2/3*（点[1]。canvasx-点[0]。canvasx）；
//浅色可能更美观
//进行实际绘图。
对于（变量i=0；i
以下是为同一条添加两种不同颜色的代码：

<div id="graph"></div>
    function barChartPlotter(e) {
    var myColor = ["#ECD078", "#D95B43", "#C02942", "#542437", "#53777A", "#42d7f4", "red", "green"];
    var myColor1 = ["black", "red", "green", "#ECD078", "#D95B43", "#C02942", "#542437", "#53777A"];
    var ctx = e.drawingContext;
    var points = e.points;
    var y_bottom = e.dygraph.toDomYCoord(0);

    // This should really be based on the minimum gap
    var bar_width = 2 / 3 * (points[1].canvasx - points[0].canvasx);
    // a lighter shade might be more aesthetically pleasing

    // Do the actual plotting.
    for (var i = 0; i < points.length; i++) {
        var p = points[i];
        var center_x = p.canvasx; // center of the bar
        ctx.fillStyle = myColor[i];
        ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
        ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, y_bottom - p.canvasy);
    }
    for (var i = 0; i < points.length; i++) {
        var p = points[i];
        console.log(points[1]);
        var center_x = p.canvasx; // center of the bar
        ctx.fillStyle = myColor1[i];
        ctx.fillRect(center_x - bar_width / 2, p.canvasy, bar_width, (y_bottom - p.canvasy) / 2);
        ctx.strokeRect(center_x - bar_width / 2, p.canvasy, bar_width, (y_bottom - p.canvasy) / 2);
    }
}
g = new Dygraph(document.getElementById("graph"),
    "X,Y\n" +
    "1,2\n" +
    "2,4\n" +
    "3,6\n" +
    "4,8\n" +
    "5,10\n" +
    "6,12\n" +
    "7,14\n" +
    "8,16\n", {
        // options go here. See http://dygraphs.com/options.html
        legend: 'always',
        animatedZooms: true,
        plotter: barChartPlotter,
        dateWindow: [0, 9]
    });


功能柱状图绘图仪（e）{
变量myColor=[“#ECD078”、“#D95B43”、“#C02942”