咱們將這個容器命名爲「chartContainer」,參考如下代碼: javascript
<body> <div id="chartContainer" style="width: 640px; height: 400px;"></div> </body>
在HEAD部分,引用amCharts JavaScript庫: html
<script src="js/amcharts.js" type="text/javascript"></script>
引用一組JavaScript對象: java
<script type="text/javascript"> var chartData = [{ country: "USA", visits: 4252 }, { country: "China", visits: 1882 }, { country: "Japan", visits: 1809 }, { country: "Germany", visits: 1322 }, { country: "UK", visits: 1122 }, { country: "France", visits: 1114 }, { country: "India", visits: 984 }, { country: "Spain", visits: 711 }, { country: "Netherlands", visits: 665 }, { country: "Russia", visits: 580 }, { country: "South Korea", visits: 443 }, { country: "Canada", visits: 441 }, { country: "Brazil", visits: 395 }, { country: "Italy", visits: 386 }, { country: "Australia", visits: 384 }, { country: "Taiwan", visits: 338 }, { country: "Poland", visits: 328}]; </script>
首先咱們須要爲圖表建立一個AmCharts.AmSerialChart對象,設置它的dataProvider和categoryField屬性。 顧名思義,dataProvider用於指定圖表的數據源,categoryField控制數據對象的字段。 ide
var chart = new AmCharts.AmSerialChart(); chart.dataProvider = chartData; chart.categoryField = "country";
接下來咱們須要添加一個graph到圖表中。一個圖表能夠有多個graph,但本例咱們只用一個graph。指定valueField,設置type字段爲「column」,這樣咱們就能夠建立一個柱狀圖了。 spa
var graph = new AmCharts.AmGraph(); graph.valueField = "visits" graph.type = "column"; chart.addGraph(graph);
最後調用 write()方法將圖表寫入 「chartContainer」 中: code
chart.write('chartContainer');
效果圖: htm
在上圖中,X軸上並未標出每一列的名稱,這樣確定不行,那咱們就調整categoryAxis的gridCount屬性: 對象
var catAxis = chart.categoryAxis; catAxis.gridCount = chartData.length;
會獲得如下結果: ip
這些標籤都擠到一塊兒了,那咱們能夠嘗試用categoryAxis的labelRotation屬性將標籤旋轉90度: it
var catAxis = chart.categoryAxis; catAxis.gridCount = chartData.length; catAxis.labelRotation = 90;
結果標籤字段被截取掉了一部分,那須要設置圖表的margins:
chart.marginTop = 15; chart.marginLeft = 55; chart.marginRight = 15; chart.marginBottom = 80;
這樣就沒有問題了:
首先填充柱子的顏色並隱藏它們的邊框:
graph.lineAlpha = 0; graph.fillAlphas = 0.8;
而後將平面的柱狀圖變爲3D效果,depth3D屬性控制柱子的深度和角度,也就是3D方向:
chart.angle = 30; chart.depth3D = 15;
終於,3D柱狀圖的效果就出來了: