我正在通过amcharts开发图表，我希望它选择某些范围，因为我在地图上处理了超过6000个x值。我试图在地图上使用zoomToCategory控件，但是当我使用它时，地图没有出现.. :( ..任何原因???以下是我的代码。:)
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>amCharts examples</title>
<link rel="stylesheet" href="http://localhost/amcharts/images/style.css" type="text/css">
<script src="http://localhost/amcharts/amcharts.js" type="text/javascript"></script>
<script type="text/javascript">
var chart;
var chartData = JSON.parse('<%=sjson%>');// [{ "Ip": "0", "Count": "10" }, { "Ip": "1", "Count": "11" }, { "Ip": "2", "Count": "12" }, { "Ip": "3", "Count": "13" }, { "Ip": "4", "Count": "14" }, { "Ip": "5", "Count": "15" }, { "Ip": "6", "Count": "16" }, { "Ip": "7", "Count": "17" }, { "Ip": "8", "Count": "18" }, { "Ip": "9", "Count": "19"}];
AmCharts.ready(function () {
// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.dataProvider = chartData;
chart.categoryField = "Ip";
chart.startDuration = 1;
// AXES
// category
var categoryAxis = chart.categoryAxis;
categoryAxis.labelRotation = 90;
categoryAxis.gridPosition = "Count";
// value
// in case you don't want to change default settings of value axis,
// you don't need to create it, as one value axis is created automatically.
// GRAPH
var graph = new AmCharts.AmGraph();
graph.valueField = "Count";
graph.balloonText = "[[category]]: [[value]]";
graph.type = "column";
graph.lineAlpha = 0;
graph.fillAlphas = 0.8;
graph.zoomToCategoryValues("1", "10");
chart.addGraph(graph);
chart.write("chartdiv");
});
</script>
</head>
<body>
<div id="chartdiv" style="width: 100%; height: 400px;"></div>
</body>
</html>
请为我提供帮助...在此grpah上钻取x轴非常重要，因为它显示了大量数据。非常感谢:)
最佳答案
图没有zoomToCategoryValues方法，只有图表有。
而且，您无法在图表初始化之前调用此方法。
您应该侦听“ init”或“ dataUpdated”事件，然后调用将进行缩放的方法：
// this line shoulf go to AmCharts.ready function:
chart.addListener("dataUpdated", zoomChart);
// this is a method which will be called after the event is fired:
function zoomChart() {
chart.zoomToCategoryValues("1", "10");
}
关于javascript - amchart柱形图上的zoomToCategory，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/12250402/