加載圖表后，使用javascript更新變量-amcharts

Question

我需要使用選擇菜單來更新多個JSON數組中的數據。

這個想法是這樣的：選擇一個年份，該年份將使用與該年份關聯的數據更新全局變量（JSON Array）。

我的問題是我不確定變量范圍以及如何控制它。 我還發現amcharts可以在加載時構建圖表，因此更新變量將無濟於事

是否可以使用新數據集更新全局變量，然后使用新數據重新加載圖表？ 看起來像什么？

不確定此更新是否有用，或者是否更清楚。

這是我制作的一張圖表的小提琴的鏈接：

http://jsfiddle.net/kenaesthetic/33JH9/

速記結構如下所示：

<head>
<script> amchart script </script>  
<head>

<body>

<select>
<option>2010</option
<option>2011</option
<option>2012</option
<option>2013</option
<option>2014</option
</select>

<div id="chart-container-1"></div> // These charts are stacked (refer to the fiddle)
<div id="chart-container-2"></div>
<div id="chart-container-3"></div>
<div id="chart-container-4"></div>
<div id="chart-container-5"></div>

</body>

Answer 1

我認為您想做更多這樣的事情：

var chart;

var chartData = [
    {
        "subject": "Personal Services",
        "2010": 493142064,
        "2011": 540156996,
        "2012": 593541335,
        "2013": 640585618,
        "2014": 689417065
    }
];

AmCharts.ready(function () {
    // SERIALL CHART
    chart = new AmCharts.AmSerialChart();
    chart.dataProvider = chartData;
    chart.categoryField = "subject";
    chart.plotAreaBorderAlpha = 0.2;
    chart.rotate = true;

    // AXES
    // Category
    var categoryAxis = chart.categoryAxis;
    categoryAxis.gridAlpha = 0.1;
    categoryAxis.axisAlpha = 0;
    categoryAxis.gridPosition = "start";

    // value                      
    var valueAxis = new AmCharts.ValueAxis();
    valueAxis.stackType = "regular";
    valueAxis.gridAlpha = 0.1;
    valueAxis.axisAlpha = 0;
    chart.addValueAxis(valueAxis);

    // GRAPHS
    // firstgraph 
    var graph = new AmCharts.AmGraph();
    graph.title = "2010";
    graph.labelText = "[[value]]";
    graph.valueField = "2010";
    graph.type = "column";
    graph.lineAlpha = 0;
    graph.fillAlphas = 1;
    graph.lineColor = "#C72C95";
    graph.balloonText = "<b><span style='color:#C72C95'>[[title]]</b></span><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>";
    chart.addGraph(graph);

    // second graph                              
    graph = new AmCharts.AmGraph();
    graph.title = "2011";
    graph.labelText = "[[value]]";
    graph.valueField = "2011";
    graph.type = "column";
    graph.lineAlpha = 0;
    graph.fillAlphas = 1;
    graph.lineColor = "#D8E0BD";
    graph.balloonText = "<b><span style='color:#afbb86'>[[title]]</b></span><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>";
    chart.addGraph(graph);

    // third graph              
    graph = new AmCharts.AmGraph();
    graph.title = "2012";
    graph.labelText = "[[value]]";
    graph.valueField = "2012";
    graph.type = "column";
    graph.lineAlpha = 0;
    graph.fillAlphas = 1;
    graph.lineColor = "#B3DBD4";
    graph.balloonText = "<b><span style='color:#74bdb0'>[[title]]</b></span><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>";
    chart.addGraph(graph);

    // fourth graph 
    graph = new AmCharts.AmGraph();
    graph.title = "2013";
    graph.labelText = "[[value]]";
    graph.valueField = "2013";
    graph.type = "column";
    graph.lineAlpha = 0;
    graph.fillAlphas = 1;
    graph.lineColor = "#69A55C";
    graph.balloonText = "<b><span style='color:#69A55C'>[[title]]</b></span><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>";
    chart.addGraph(graph);

    // fifth graph 
    graph = new AmCharts.AmGraph();
    graph.title = "2014";
    graph.labelText = "[[value]]";
    graph.valueField = "2014";
    graph.type = "column";
    graph.lineAlpha = 0;
    graph.fillAlphas = 1;
    graph.lineColor = "#B5B8D3";
    graph.balloonText = "<b><span style='color:#7a81be'>[[title]]</b></span><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>";
    chart.addGraph(graph);

    // LEGEND
    var legend = new AmCharts.AmLegend();
    legend.position = "right";
    legend.borderAlpha = 0.3;
    legend.horizontalGap = 10;
    legend.switchType = "v";
    chart.addLegend(legend);

    // WRITE
    chart.write("chartdiv");
});

// Make chart 2D/3D
function setDepth() {
    if (document.getElementById("rb1").checked) {
        chart.depth3D = 0;
        chart.angle = 0;
    } else {
        chart.depth3D = 20;
        chart.angle = 30;
    }
    chart.validateNow();
}

本示例基於AmChart的堆疊圖表示例代碼。 它確實將圖表的數據分離到一個全局Javascript變量中，即chartData。

您需要將問題分為兩部分：對數據的操作，然后在更改數據后將數據加載到圖表中。

這是使用jQuery和按鈕操作數據的非常簡單的示例。 http://jsfiddle.net/stevewilhelm/XzmQ6/2/

修改數據后，您將需要更新圖表。 請參閱http://blog.amcharts.com/2013/08/tutorial-live-editing-chart-data.html作為示例。

並查看chart.dataProvider chart.validateData（）以獲得詳細信息。

加載圖表后，使用javascript更新變量-amcharts

問題描述

1 個解決方案

解決方案1
0 已采納 2013-11-02 05:24:46

加載圖表后，使用javascript更新變量-amcharts

問題描述

1 個解決方案

解決方案1 0 已采納 2013-11-02 05:24:46

解決方案1
0 已采納 2013-11-02 05:24:46