yudao-dev/src/views/energy/analysis/trendAnalysis/components/barChart.vue

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<template>
<div
id="analysischartBar"
style="width: 100%"
:style="{ height: chartHeight + 'px' }"
></div>
</template>
<script>
import * as echarts from 'echarts'
import resize from '@/utils/chartMixins/resize'
export default {
name: "BarChart",
mixins: [resize],
data() {
return {
chartDom: '',
chart: '',
chartHeight: this.tableHeight(214) - 70
}
},
props: {
chartData: {
type: Array,
required: true,
default: () => {
return []
}
},
timeDim: {
type: String,
default: ''
}
},
watch: {
chartData: function () {
this.getChart()
}
},
mounted() {
window.addEventListener('resize', () => {
this.chartHeight = this.tableHeight(214) - 70
})
},
methods: {
getChart() {
if (
this.chart !== null &&
this.chart !== '' &&
this.chart !== undefined
) {
this.chart.dispose() // 页面多次刷新会出现警告Dom已经初始化了一个实例这是销毁实例
}
this.chartDom = document.getElementById('analysischartBar')
this.chart = echarts.init(this.chartDom)
let xData = []
let yData = []
for (let i = 0; i < this.chartData.length; i++) {
let time = ""
if (this.timeDim === '3') {
let year = this.chartData[i].time.slice(0,4)
let weak = this.chartData[i].time.slice(4,6)
time = year+' 第 '+weak+' 周'
} else {
time = this.chartData[i].time
}
xData.push(time)
yData.push(this.chartData[i].useNum)
}
var option = {
color:['#288AFF'],
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'shadow'
}
},
grid: {
left: '4%',
right: '1%',
bottom: '1%',
containLabel: true
},
xAxis: {
type: 'category',
data: xData,
axisLabel: {
rotate: "45"
}
},
yAxis: {
type: 'value'
},
series: [
{
data: yData,
type: 'bar',
barMaxWidth: 20,
label: {
show: true,
position: 'top'
}
}
]
};
option && this.chart.setOption(option);
}
}
}
</script>