python_weather/web/js/chart32.js
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2024-06-07 20:54:53 +08:00

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function echarts_32() {
// 基于准备好的dom初始化echarts实例
var myChart = echarts.init(document.getElementById('fb2'));
var data = Chart32_Data;
// 指定图表的配置项和数据
option = {
title: {
text: '空气质量地区排行',
// subtext: '数据来源:环保局',
left: 'center',
textStyle: {
color: '#fff',
fontSize: '16'
}
},
tooltip: {
trigger: 'item',
position: function (p) { //其中p为当前鼠标的位置
return [p[0] + 60, p[1] - 10];
},
formatter: function (params) {
var dataItem = data.find(item => item.name === params.name);
var value = `${dataItem.name}: ${params.value} (${params.percent}%) <br>`;
dataItem.degree.forEach((v, index) => {
value += `${v} `;
if (index % 2 === 1) {
value += '<br>';
}
});
return value; // 动态遍历数据显示地区、天气和百分比
}
},
legend: {
orient: 'vertical',
left: 'left',
top: '70%',
itemWidth: 10,
itemHeight: 10,
textStyle: {
color: 'rgba(255,255,255,.5)',
fontSize: '12',
},
// data: ['优', '良', '轻度污染', '中度污染', '重度污染', '严重污染'],
},
series: [
{
name: '空气质量',
type: 'pie',
center: ['50%', '42%'],
radius: ['40%', '60%'],
data: data.map(item => ({
value: item.value,
name: item.name,
itemStyle: {color: item.color},
label: {
show: false,
position: 'center',
formatter: '{b}: {c}' // 显示地区名称和天气数据
},
})),
emphasis: {
itemStyle: {
show: true,
fontSize: '30',
fontWeight: 'bold'
}
},
labelLine: {
show: false
}
// itemStyle: {
// color: ['#0f63d6', '#0f78d6', '#0f8cd6', '#0fa0d6', '#0fb4d6', '#0fc8d6'] // 添加更多的颜色
// }
}
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
window.addEventListener("resize", function () {
myChart.resize();
});
}