echarts柱状折线图数据量大,柱状图不显示问题解决办法.
2017-01-23 09:39
375 查看
前言
百度的echarts是一款开源软件，为我们提供了漂亮的图形界面。它的简单,易用,种类多和兼容性好等特点备受开发人员青睐。本文将提供一种思路来解决柱状图后台返回的数据量大，无法渲染的问题，供大家参考。问题如下：只显示了折线图，用电负荷(柱状图)是有数据的但未显示，原因是数据量过大无法渲染出来，并且在鼠标移动在图上时会卡顿：
1.在html中引入echarts,并为echarts图准备容器.
<head> <meta charset="utf-8"> <title>demo</title> <script src="js/jquery.min.js"></script> <script src="js/echarts/echarts.min.js"></script> </head> <body> <!-- 图表展示--> <h4>数据图</h4> <div style="width:100%"> <div id="main1" class="chart2"></div> </div> </body>
2.添加echarts图数据和属性设置
var main1Json ={id:"main1",
title:"",
subtitle:"",
unit:['负荷:KW','同比:%'],
legend:['用电负荷','同比增长率'],
xAxis:['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23','24','2','3','4','5','6','7','8','9','10','11','12','13','1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yAxis:[{min: 0,max: 80,interval: 10},{min: -2,max: 10,interval: 2}],
series: [
{
name:'用电负荷',
type:'bar',
barWidth:18,
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2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3,-1, 2.2, 3.3, 4.5, 6.3, 9.2, 8.3, 4.4, 8.0, 6.5, 2.0, 6.2,2.0, 4.9, 7.0, 2.2, 2.6, 7.7, 5.6, 1.2, 3.6, 2.0, 6.4, 3.3]
}
]
};3.渲染echarts图并初始化.
//echarts画折柱混合图
function creatBigDataCharts(json){
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById(json.id));
option = {
title : {
text: json.title,
subtext: json.subtitle,
x:'center'
},
tooltip: {
trigger: 'item'
},
calculable : true,
legend: {
x : 'center',
y : '85%',
data: json.legend
},
grid: {
top: '10%',
left: '3%',
right: '4%',
bottom: '15%',
containLabel: true
},
xAxis: [
{
type: 'category',
data: json.xAxis,
axisLabel :{
interval:0,
clickable:true
},
splitLine:{
show:false
},
axisTick: {
alignWithLabel: true
}
}
],
yAxis: [
{
type: 'value',
name: json.unit[0],
min: json.yAxis[0].min,
max: json.yAxis[0].max,
interval: json.yAxis[0].interval
},
{
type: 'value',
name: json.unit[1],
min: json.yAxis[1].min,
max: json.yAxis[1].max,
interval: json.yAxis[1].interval,
splitLine:{
show:false
}
}
],
dataZoom: [
{
show: true,//dataZoom，框选区域缩放，自动与存在的dataZoom控件同步，分别是启用，缩放后退
start: 0,
end: 10
}
],
series: json.series
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
}
//初始化加载
$(document).ready(function(){
creatBigDataCharts(main1Json);
});4.运行效果显示
5.总结
echarts图下方的可拖动区域实际上是框选区域缩放的dataZoom属性在起作用，这样就可以实现数据量太大无法显示的问题，并且鼠标在echarts图在移动时也不会太卡顿。注：想进一步了解可以参考官方api文档的雨量流量关系图。另外，需要完整demo的可以私信我。欢迎指出文章中的缺陷与不足。
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