<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- 引入 echarts.js -->
<script src="js/echarts.min.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></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 dataCount = 5e5;
var data = generateData(dataCount);
var option = {
title: {
text: echarts.format.addCommas(dataCount) + ' Data',
left: 10
},
toolbox: {
feature: {
dataZoom: {
yAxisIndex: false
},
saveAsImage: {
pixelRatio: 2
}
}
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
}
},
grid: {
bottom: 90
},
dataZoom: [{
type: 'inside'
}, {
type: 'slider'
}],
xAxis: {
data: data.categoryData,
silent: false,
splitLine: {
show: false
},
splitArea: {
show: false
}
},
yAxis: {
splitArea: {
show: false
}
},
series: [{
type: 'bar',
data: data.valueData,
// Set `large` for large data amount
large: true
}]
};
function generateData(count) {
var baseValue = Math.random() * 1000;
var time = +new Date(2011, 0, 1);
var smallBaseValue;
function next(idx) {
smallBaseValue = idx % 30 === 0 ?
Math.random() * 700 :
(smallBaseValue + Math.random() * 500 - 250);
baseValue += Math.random() * 20 - 10;
return Math.max(
0,
Math.round(baseValue + smallBaseValue) + 3000
);
}
var categoryData = [];
var valueData = [];
for(var i = 0; i < count; i++) {
categoryData.push(echarts.format.formatTime('yyyy-MM-dd\nhh:mm:ss', time));
valueData.push(next(i).toFixed(2));
time += 1000;
}
return {
categoryData: categoryData,
valueData: valueData
};
}
myChart.setOption(option);
</script>
</body>
</html>
