Google Chart：如何绘制条形图的垂直线

更新时间：2023-11-23 13:02:40

以下示例演示如何绘制额外的垂直线

  google.load（'visualization'，'1'，{packages：['corechart']}）; google.setOnLoadCallback（drawChart）;函数drawChart（）{var data = google.visualization.arrayToDataTable（[[Element，Difference，{role：style}]，[FOLDERADDUPDATE，2.29，＃e5e6e2]，[NOTEUPDATE ，3.63，silver]，[DELETENOTE，1.12，e5e4e7]，[NOTEUPDATEANDFOLDER，5.02，color：＃e5e4e2]，[FOLDERREMOVEUPDATE，。082，color：e5e5e2]， [PENDINGEVENT，0，color：e5e4e4]]）; var view = new google.visualization.DataView（data）; view.setColumns（[0，1，{calc：stringify，sourceColumn：1，type：string，role：annotation}，2]）; var options = {title：，width：600，height：300，bar：{groupWidth：95％}，legend：{position：none}}; var chart = new google.visualization.BarChart（document.getElementById（barchart_values））; chart.draw（view，options）; drawVAxisLine（图表，3.0）; //设置x值的位置}函数drawVAxisLine（chart，value）{var layout = chart.getChartLayoutInterface（）; var chartArea = layout.getChartAreaBoundingBox（）; var svg = chart.getContainer（）。getElementsByTagName（'svg'）[0]; var xLoc = layout.getXLocation（value）svg.appendChild（createLine（xLoc，chartArea.top + chartArea.height，xLoc，chartArea.top，'＃00cccc'，4））; //轴线}函数createLine（x1，y1，x2，y2，color，w）{var line = document.createElementNS（'http://www.w3.org/2000/svg'，'line'）; line.setAttribute（'x1'，x1）; line.setAttribute（'y1'，y1）; line.setAttribute（'x2'，x2）; line.setAttribute（'y2'，y2）; line.setAttribute（'stroke'，color）; line.setAttribute（'stroke-width'，w）; return line;}

< script type =text / javascriptsrc =https://www.google.com/jsapi>< / script>< div id =barchart_values>< / div>

I'm trying to add a vertical line so that there can be a visual distinction for when an element exceeds the value.

Thanks

<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
    google.load("visualization", "1", {
    packages: ["corechart"]
    });
    google.setOnLoadCallback(drawChart);

    function drawChart() {
        var data = google.visualization.arrayToDataTable([
            ["Element", "Difference", {
                role: "style"
            }],
            ["FOLDERADDUPDATE", 2.29, "#e5e6e2"],
            ["NOTEUPDATE", 3.63, "silver"],
            ["DELETENOTE", 1.12, "e5e4e7"],
            ["NOTEUPDATEANDFOLDER", 5.02, "color: #e5e4e2"],
            ["FOLDERREMOVEUPDATE",.082,"color:e5e5e2"],
            ["PENDINGEVENT", 0,"color:e5e4e4"]
        ]);

        var view = new google.visualization.DataView(data);
        view.setColumns([0, 1, {
            calc: "stringify",
            sourceColumn: 1,
            type: "string",
            role: "annotation"
        },
        2]);

        var options = {
            title: "",
            width: 600,
            height: 300,
            bar: {
                groupWidth: "95%"
            },
            legend: {
                position: "none"
            },
        };
        var chart = new google.visualization.BarChart(document.getElementById("barchart_values"));
        chart.draw(view, options);
}
</script>

The following example demonstrates how to draw an additional vertical line

google.load('visualization', '1', {packages: ['corechart']});
google.setOnLoadCallback(drawChart);

 
 function drawChart() {
        var data = google.visualization.arrayToDataTable([
            ["Element", "Difference", {
                role: "style"
            }],
            ["FOLDERADDUPDATE", 2.29, "#e5e6e2"],
            ["NOTEUPDATE", 3.63, "silver"],
            ["DELETENOTE", 1.12, "e5e4e7"],
            ["NOTEUPDATEANDFOLDER", 5.02, "color: #e5e4e2"],
            ["FOLDERREMOVEUPDATE",.082,"color:e5e5e2"],
            ["PENDINGEVENT", 0,"color:e5e4e4"]
        ]);

        var view = new google.visualization.DataView(data);
        view.setColumns([0, 1, {
            calc: "stringify",
            sourceColumn: 1,
            type: "string",
            role: "annotation"
        },
        2]);

        var options = {
            title: "",
            width: 600,
            height: 300,
            bar: {
                groupWidth: "95%"
            },
            legend: {
                position: "none"
            }
        };
        var chart = new google.visualization.BarChart(document.getElementById("barchart_values"));
        chart.draw(view, options);
        drawVAxisLine(chart, 3.0);  //set x value where line shoud be located 
}

function drawVAxisLine(chart,value){
    var layout = chart.getChartLayoutInterface();
    var chartArea = layout.getChartAreaBoundingBox();

    var svg = chart.getContainer().getElementsByTagName('svg')[0];
    var xLoc = layout.getXLocation(value)
    svg.appendChild(createLine(xLoc,chartArea.top + chartArea.height,xLoc,chartArea.top,'#00cccc',4)); // axis line 
}

function createLine(x1, y1, x2, y2, color, w) {
    var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
    line.setAttribute('x1', x1);
    line.setAttribute('y1', y1);
    line.setAttribute('x2', x2);
    line.setAttribute('y2', y2);
    line.setAttribute('stroke', color);
    line.setAttribute('stroke-width', w);
    return line;
}

<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<div id="barchart_values"></div>

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Google Chart：如何绘制条形图的垂直线

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