效果图
源代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- 引入 echarts.js -->
<script src="js/echarts.min.js"></script>
<script src="js/jquery-1.11.0.min.js"></script>
<script src="dist/extension/dataTool.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" ></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
var option;
var yearCount = 7;
var categoryCount = 30;
var xAxisData = [];
var customData = [];
var legendData = [];
var dataList = [];
legendData.push('trend');
var encodeY = [];
for (var i = 0; i < yearCount; i++) {
legendData.push((2010 + i) + '');
dataList.push([]);
encodeY.push(1 + i);
}
for (var i = 0; i < categoryCount; i++) {
var val = Math.random() * 1000;
xAxisData.push('category' + i);
var customVal = [i];
customData.push(customVal);
var data = dataList[0];
for (var j = 0; j < dataList.length; j++) {
var value = j === 0
? echarts.number.round(val, 2)
: echarts.number.round(Math.max(0, dataList[j - 1][i] + (Math.random() - 0.5) * 200), 2);
dataList[j].push(value);
customVal.push(value);
}
}
function renderItem(params, api) {
var xValue = api.value(0);
var currentSeriesIndices = api.currentSeriesIndices();
var barLayout = api.barLayout({
barGap: '30%', barCategoryGap: '20%', count: currentSeriesIndices.length - 1
});
var points = [];
for (var i = 0; i < currentSeriesIndices.length; i++) {
var seriesIndex = currentSeriesIndices[i];
if (seriesIndex !== params.seriesIndex) {
var point = api.coord([xValue, api.value(seriesIndex)]);
point[0] += barLayout[i - 1].offsetCenter;
point[1] -= 20;
points.push(point);
}
}
var style = api.style({
stroke: api.visual('color'),
fill: null
});
return {
type: 'polyline',
shape: {
points: points
},
style: style
};
}
option = {
tooltip: {
trigger: 'axis'
},
legend: {
data: legendData
},
dataZoom: [{
type: 'slider',
start: 50,
end: 70
}, {
type: 'inside',
start: 50,
end: 70
}],
xAxis: {
data: xAxisData
},
yAxis: {},
series: [{
type: 'custom',
name: 'trend',
renderItem: renderItem,
itemStyle: {
normal: {
borderWidth: 2
}
},
encode: {
x: 0,
y: encodeY
},
data: customData,
z: 100
}].concat(echarts.util.map(dataList, function (data, index) {
return {
type: 'bar',
animation: false,
name: legendData[index + 1],
itemStyle: {
normal: {
opacity: 0.5
}
},
data: data
};
}))
};
myChart.setOption(option);
</script>
</body>
</html>
