[echarts]同指标对比柱状图相关的知识介绍及应用示例

http://echarts.baidu.com/echarts2/doc/example/bar1.html

option = {
title : {
text: ‘学院课程获得学分率对比统计‘,
subtext: ‘绿色柱：通过率由高到低；蓝色柱：本学院课程平均获得学分率；红色柱：挂科率由高到低‘
},
tooltip : {
trigger: ‘axis‘
},
legend: {
data:[‘获得学分率‘]
},
toolbox: {
show : true,
feature : {
mark : {show: false},
dataView : {show: false, readOnly: false},
magicType : {show: false, type: [‘line‘, ‘bar‘]},
restore : {show: false},
saveAsImage : {show: false}
}
},
calculable : true,
xAxis : [
{
type : ‘category‘,
axisLabel: {
interval: 0,
rotate: 40
},
data : [‘高数1‘,‘高数2‘,‘高数3‘,‘高数4‘,‘高数5‘,‘高数6‘,‘高数7‘,‘高数8‘,‘...‘,‘全部课程‘,‘...‘,‘大学英语1‘,‘大学英语2‘,‘大学英语3‘,‘大学英语4‘,‘大学英语5‘,‘大学英语6‘,‘大学英语7‘,‘大学英语8‘]
}
],
yAxis : [
{
type : ‘value‘,
axisLabel : {
formatter: ‘{value} %‘
}
}
],
series : [

{
name:‘获得学分率‘,
type:‘bar‘,
barWidth:30,
itemStyle: {
normal: {
color: function(params) {
console.log(params);
// build a color map as your need.
var colorList = [
‘#9BCA63‘, ‘#9BCA63‘, ‘#9BCA63‘, ‘#9BCA63‘, ‘#9BCA63‘, ‘#9BCA63‘,‘#9BCA63‘, ‘#9BCA63‘,
‘#27727B‘,‘#27727B‘,‘#27727B‘,
‘#C1232B‘,‘#C1232B‘,‘#C1232B‘,‘#C1232B‘,‘#C1232B‘,‘#C1232B‘,‘#C1232B‘,‘#C1232B‘
];
return colorList[params.dataIndex]
}
}
},
data:[100, 100, 100, 100,100,100,100,100,0,95.4,0, 58.5, 48.2,58.5, 48.2, 38.7, 24.8, 16.0, 5.3]
}
]
};