Echarts 实现温度计图标展示
参考的:https://blog.csdn.net/soldierofyou/article/details/8266126
首先需要引入echarts.js
function getChart(value) {
var TP_value = value;
var kd = [];
var Gradient = [];
var leftColor = '';
var showValue = '';
var boxPosition = [65, 0];
var TP_txt = ''
// 刻度使用柱状图模拟，短设置1，长的设置3；构造一个数据
for(var i = 0, len = 135; i <= len; i++) {
if(i < 10 || i > 130) {
kd.push('')
} else {
if((i - 10) % 20 === 0) {
kd.push('-2');
} else if((i - 10) % 4 === 0) {
kd.push('-1');
} else {
kd.push('');
}
}
}
//中间线的渐变色和文本内容
if(TP_value > 20) {
TP_txt = '温度偏高';
Gradient.push({
offset: 0,
color: '#93FE94'
}, {
offset: 0.5,
color: '#E4D225'
}, {
offset: 1,
color: '#E01F28'
})
} else if(TP_value > -20) {
TP_txt = '温度正常';
Gradient.push({
offset: 0,
color: '#93FE94'
}, {
offset: 1,
color: '#E4D225'
})
} else {
TP_txt = '温度偏低';
Gradient.push({
offset: 1,
color: '#93FE94'
})
}
if(TP_value > 62) {
showValue = 62
} else {
if(TP_value < -60) {
showValue = -60
} else {
showValue = TP_value
}
}
if(TP_value < -10) {
boxPosition = [65, -120];
}
leftColor = Gradient[Gradient.length - 1].color;
// 因为柱状初始化为0，温度存在负值，所以加上负值60和空出距离10
var option = {
backgroundColor: '#0C2F6F',
title: {
text: '温度计',
show: false
},
yAxis: [{
show: false,
data: [],
min: 0,
max: 135,
axisLine: {
show: false
}
}, {
show: false,
min: 0,
max: 50,
}, {
type: 'category',
data: ['', '', '', '', '', '', '', '', '', '', '°C'],
position: 'left',
offset: -80,
axisLabel: {
fontSize: 10,
color: 'white'
},
axisLine: {
show: false
},
axisTick: {
show: false
},
}],
xAxis: [{
show: false,
min: -10,
max: 80,
data: []
}, {
show: false,
min: -10,
max: 80,
data: []
}, {
show: false,
min: -10,
max: 80,
data: []
}, {
show: false,
min: -5,
max: 80,
}],
series: [{
name: '条',
type: 'bar',
// 对应上面XAxis的第一个对)象配置
xAxisIndex: 0,
data: [{
value: (showValue + 30),
label: {
normal: {
show: true,
position: boxPosition,
width: 20,
height: 100,
formatter: '{back| ' + TP_value + ' }{unit|°C}\n{downTxt|' + '}',
rich: {
back: {
align: 'center',
lineHeight: 50,
fontSize: 30,
fontFamily: 'digifacewide',
color: leftColor
},
unit: {
fontFamily: '微软雅黑',
fontSize: 15,
lineHeight: 50,
color: leftColor
},
downTxt: {
lineHeight: 50,
fontSize: 25,
align: 'center',
color: '#fff'
}
}
}
}
}],
barWidth: 18,
itemStyle: {
normal: {
color: new echarts.graphic.LinearGradient(0, 1, 0, 0, Gradient)
}
},
z: 2
}, {
name: '白框',
type: 'bar',
xAxisIndex: 1,
barGap: '-100%',
data: [134],
barWidth: 28,
itemStyle: {
normal: {
color: '#0C2E6D',
barBorderRadius: 50,
}
},
z: 1
}, {
name: '外框',
type: 'bar',
xAxisIndex: 2,
barGap: '-100%',
data: [135],
barWidth: 38,
itemStyle: {
normal: {
color: '#4577BA',
barBorderRadius: 50,
}
},
z: 0
}, {
name: '圆',
type: 'scatter',
hoverAnimation: false,
data: [0],
xAxisIndex: 0,
symbolSize: 48,
itemStyle: {
normal: {
color: '#93FE94',
opacity: 1,
}
},
z: 2
}, {
name: '白圆',
type: 'scatter',
hoverAnimation: false,
data: [0],
xAxisIndex: 1,
symbolSize: 60,
itemStyle: {
normal: {
color: '#0C2E6D',
opacity: 1,
}
},
z: 1
}, {
name: '外圆',
type: 'scatter',
hoverAnimation: false,
data: [0],
xAxisIndex: 2,
symbolSize: 70,
itemStyle: {
normal: {
color: '#4577BA',
opacity: 1,
}
},
z: 0
}, {
name: '刻度',
type: 'bar',
yAxisIndex: 0,
xAxisIndex: 3,
label: {
normal: {
show: true,
position: 'left',
distance: 10,
color: 'white',
fontSize: 14,
formatter: function(params) {
if(params.dataIndex > 130 || params.dataIndex < 10) {
return '';
} else {
if((params.dataIndex - 10) % 20 === 0) {
return params.dataIndex - 30;
} else {
return '';
}
}
}
}
},
barGap: '-100%',
data: kd,
barWidth: 1,
itemStyle: {
normal: {
color: 'white',
barBorderRadius: 120,
}
},
z: 0
}]
};
return option;
}