Edit on GitHub1.7.3. 使用实体创建图表
在本章节我们将创建类似 AmCharts 示例中 3D 重叠列图的图表。这个图将从数据库获取数据，所以必须要定义 dataContainer 属性。amCharts 用来定义这种图所使用的 JavaScript 如下：
var chart = AmCharts.makeChart("chartdiv", {
"theme": "light",
"type": "serial",
"dataProvider": [{
"country": "USA",
"year2004": 3.5,
"year2005": 4.2
}, {
"country": "UK",
"year2004": 1.7,
"year2005": 3.1
}, {
"country": "Canada",
"year2004": 2.8,
"year2005": 2.9
}, {
"country": "Japan",
"year2004": 2.6,
"year2005": 2.3
}, {
"country": "France",
"year2004": 1.4,
"year2005": 2.1
}, {
"country": "Brazil",
"year2004": 2.6,
"year2005": 4.9
}, {
"country": "Russia",
"year2004": 6.4,
"year2005": 7.2
}, {
"country": "India",
"year2004": 8,
"year2005": 7.1
}, {
"country": "China",
"year2004": 9.9,
"year2005": 10.1
}],
"valueAxes": [{
"stackType": "3d",
"unit": "%",
"position": "left",
"title": "GDP growth rate",
}],
"startDuration": 1,
"graphs": [{
"balloonText": "GDP grow in [[category]] (2004): <b>[[value]]</b>",
"fillAlphas": 0.9,
"lineAlpha": 0.2,
"title": "2004",
"type": "column",
"valueField": "year2004"
}, {
"balloonText": "GDP grow in [[category]] (2005): <b>[[value]]</b>",
"fillAlphas": 0.9,
"lineAlpha": 0.2,
"title": "2005",
"type": "column",
"valueField": "year2005"
}],
"plotAreaFillAlphas": 0.1,
"depth3D": 60,
"angle": 30,
"categoryField": "country",
"categoryAxis": {
"gridPosition": "start"
},
"export": {
"enabled": true
}
});