【Echarts每天一例】-1

<div id="main" style="height:400px"></div>
<script src="http://echarts.baidu.com/build/dist/echarts.js"></script>
<script type="text/javascript">
require.config({
paths: {
echarts: 'http://echarts.baidu.com/build/dist'
}
});
// 使用
require
(
[
'echarts',
'echarts/chart/line' ,
'echarts/chart/bar' // 使用柱状图就加载bar模块，按需加载
],
function (ec)
{
// 基于准备好的dom，初始化echarts图表
var myChart = ec.init(document.getElementById('main'));
var option = {
title : {
text: ['基于ZIGBEE的噪声监测系统'],
x: 'center'
//subtext: '纯属虚构'
},
tooltip : {
trigger: 'axis'
},
toolbox: {
show : true,
feature : {
mark : {show: true},
dataView : {show: true, readOnly: false},
magicType : {show: true, type: ['line', 'bar']},
restore : {show: true},
saveAsImage : {show: true}
}
},
dataZoom : {
show : false,
start : 0,
end : 100  //有10列，每一列10厘米
},
xAxis : [   //横轴
{
type : 'category',
//boundaryGap : true,
data : (function (){
var now = new Date();
var res = [];
var len = 10;
while (len--) {
res.unshift(now.toLocaleTimeString().replace(/^\D*/,''));
now = new Date(now - 2000);
}
return res;
})()
},
],
yAxis : [  //纵抽
{
type : 'value',
scale: true,
name : '分贝值',
//boundaryGap: [0.2, 0.2]
},
],
series : [
{  //点住以后的标记
name:'分贝值',
type:'line',
data:(function (){
var res = [];
var len = 10;
while (len--) {
res.push((Math.random()*(110-30) + 30));
}
return res;
})()
}
]
};
myChart.setOption(option);
var lastData = 11;
var axisData;
var timeTicket;
clearInterval(timeTicket);
timeTicket = setInterval(function (){
lastData =Math.round((Math.random()*(110-30) + 30));
axisData = (new Date()).toLocaleTimeString().replace(/^\D*/,'');
myChart.addData([
[
0,        // 系列索引
lastData, // 新增数据
false,    // 新增数据是否从队列头部插入
false,    // 是否增加队列长度，false则自定删除原有数据，队头插入删队尾，队尾插入删队头
axisData  // 坐标轴标签
]
]);
}, 2100);
}
);
</script>