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2_5_bar_chart.html
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<!--阶梯瀑布图-->
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>a</title>
<style>
body {
background-color: #FFF
}
</style>
</head>
<body>
<div id="main" style="height:500px;width: 100%; margin-left: 0px;float: left;"></div>
<!-- ECharts单文件引入 -->
<script src="echarts-2/build/dist/echarts.js"></script>
<script src="http://libs.baidu.com/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
// 路径配置
require.config({
paths: {
echarts: 'echarts-2/build/dist'
}
});
// 使用
require(
[
'echarts',
'echarts/chart/bar', // 使用柱状图就加载bar模块，按需加载
'echarts/chart/line'
],
function (ec) {
// 基于准备好的dom，初始化echarts图表
var myChart = ec.init(document.getElementById('main'));
var json;
$.getJSON("data/airdaily.json", function (datajson) {
optionfun(datajson);
});
function optionfun(json){
option = {
title: {
text: '空气质量变化',
subtext: 'airquality'
},
tooltip : {
trigger: 'axis',
axisPointer : { // 坐标轴指示器，坐标轴触发有效
type : 'shadow' // 默认为直线，可选为：'line' | 'shadow'
},
formatter: function (params) {
var tar;
if (params[1].value != '') {
tar = params[1];
}
else {
tar = params[0];
}
return tar.name + '<br/>' + tar.seriesName + ' : ' + tar.value;
}
},
legend: {
data: ['+CO','-CO'],
},
toolbox: {
show : true,
orient: 'vertical',
x: 'right',
y: 'center',
feature : {
mark : {show: true},
dataView : {show: true, readOnly: false},
magicType : {show: true, type: ['line', 'bar', 'stack', 'tiled']},
restore : {show: true},
saveAsImage : {show: true}
}
},
calculable: true,
xAxis: [
{
type: 'category',
boundaryGap: true,
data: (function(){
var data=[];
for(var i=0;i<10;i++){
data.push(json[i].date);
}
return data;
})()
}
],
yAxis: [
{
type: 'value',
axisLabel: {
formatter: '{value} ug/cm3'
}
}
],
series: [
{
name:'辅助',
type:'bar',
stack: '总量',
itemStyle:{
normal:{
barBorderColor:'rgba(0,0,0,0)',
color:'rgba(0,0,0,0)'
},
emphasis:{
barBorderColor:'rgba(0,0,0,0)',
color:'rgba(0,0,0,0)'
}
},
data: (function(){
var data=[];
var sum=0;
for(var i=0;i<10;i++){
if(i%2==0){
if(i==0){
data.push(0);
sum += Number(json[i].CO);
continue;
}
data.push(sum);
sum += Number(json[i].CO);
}else {
sum -= Number(json[i].CO-1);
data.push(sum);
}
}
return data;
})()
},
{
name: '+CO',
type: 'bar',
stack: '总量',
itemStyle : { normal: {label : {show: true, position: 'top'}}},
data: (function(){
var data=[];
for(var i=0;i<10;i++){
if(i%2!=0){
data.push('');
}else {
data.push(Number(json[i].CO));
}
}
return data;
})()
},
{
name: '-CO',
type: 'bar',
stack: '总量',
itemStyle : { normal: {label : {show: true, position: 'bottom'}}},
data: (function(){
var data=[];
for(var i=0;i<10;i++){
if(i%2==0){
data.push('');
}else {
data.push(Number(json[i].CO-1));
}
}
return data;
})()
}
]
};
// 为echarts对象加载数据
myChart.setOption(option);
}
}
);
</script>
</body>
</html>