[GitHub] zhanzekun opened a new issue #8866: 请问如何让visual map和地图配合的时候，动态的让visual map的hover颜色也根据数据映射到某个数据区间

[GitBox <gi...@apache.org>]

zhanzekun opened a new issue #8866: 请问如何让visual map和地图配合的时候，动态的让visual map的hover颜色也根据数据映射到某个数据区间
URL: https://github.com/apache/incubator-echarts/issues/8866
 
 
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   ### One-line summary [问题简述]
   如何让配合map类型的visualMap组件的hover色 也根据数据映射到某个颜色区间？
   现在的hover色是由series - emphasis -itemStyles - areaColor 决定的，可是文档中这个地方只支持字符串写死…这个有办法吗
   
   
   
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]: 4.0.3
   + Browser version [浏览器类型和版本]: Chrome最新版本
   + OS Version [操作系统类型和版本]: win10 pro
   
   
   
   
   
   ### Expected behaviour [期望结果]
   希望鼠标hover到地图上时，hover高亮色也是根据数据映射到某个颜色区间
   
   
   
   
   ### ECharts option [ECharts配置项]
   <!-- Copy and paste your 'echarts option' here. -->
   <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
   ```javascript
   option = {
      visualMap: [{
   		show: false,
   		max: 100
   		min: 1
   		left: 'left',
   		top: 'bottom',
   		text: ['高', '低']
   		textStyle: {
   		    color: "#8F909E"
   		},
   		seriesIndex: 0,
   		calculable: true,
   		inRange: {
   		    color: [ '#EDF0FF','#849EFF']
   		},
         series: [
   		{
   		        top:'5%',
   		        left:'15%',
   			right:'18%',
   			bottom:'5%',
   			name: 'temp',
   			type: 'map',
   			mapType: 'china',
   			roam: false,
   			label: {
   				normal: {
   					show: false
   				 },
   			       emphasis: {
   				        show: false
   			         }
   			},
   			emphasis: {
   				itemStyle: {
   					areaColor: '#cdcdcd'
   				}
   			},
   			data:data
   				}
   			]
   };
   
   ```
   
   
   
   
   ### Other comments [其他信息]
   <!-- For example: Screenshot or Online demo -->
   <!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->
   
   ![image](https://user-images.githubusercontent.com/17589129/44069086-d24264fc-9faf-11e8-9022-68639edd5ee6.png)
   

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