关于effectScatter经纬度不准确的问题

zhoufanglu commented 3 years ago

Version

4.9.0

Steps to reproduce

我画了个浦东新区的地图，然后我想在上面标记了effectScatter,点，发现经纬度位置与实际的位置不符合

What is expected?

effectScatter经纬度与实际地图符合

What is actually happening?

effectScatter经纬度与实际地图不符合

echarts-bot[bot] commented 3 years ago

Hi! We've received your issue and please be patient to get responded. 🎉 The average response time is expected to be within one day for weekdays.

In the meanwhile, please make sure that you have posted enough image to demo your request. You may also check out the API and chart option to get the answer.

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echarts-bot[bot] commented 3 years ago

@zhoufanglu It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people, we'd like to suggest using English next time. 🤗

TRANSLATED

**TITLE** On the inaccurate latitude and longitude of EffectScatter **BODY** ### Version 4.9.0 ### Steps to reproduce I drew a map of Pudong New Area, and then I wanted to mark objectScatter on it, and I found that the latitude and longitude position did not match the actual location ### What is expected? EffectScatter's longitude and latitude match the actual map ### What is actually happening? EffectScatter's longitude and latitude do not correspond to the actual map

zhoufanglu commented 3 years ago

https://datav.aliyun.com/tools/atlas/#&lat=30.332329214580188&lng=106.72278672066881&zoom=3.5 地图是用这个生成的

plainheart commented 3 years ago

注意坐标系，阿里云这个应该是高德坐标系，在百度地图上显示需要转换下。

zhoufanglu commented 3 years ago

注意坐标系，阿里云这个应该是高德坐标系，在百度地图上显示需要转换下。

    //将腾讯/高德地图经纬度转换为百度地图经纬度
    qqMapTransBMap(lng, lat) {
      let x_pi = 3.14159265358979324 * 3000.0 / 180.0;
      let x = lng;
      let y = lat;
      let z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
      let theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
      let lngs = z * Math.cos(theta) + 0.0065;
      let lats = z * Math.sin(theta) + 0.006;

      return {
        lng: lngs,
        lat: lats
      }
    }

转换过了没有效果，地图的点往上偏移了点

plainheart commented 3 years ago

可以提供个示例代码，方便我们定位问题。

zhoufanglu commented 3 years ago

可以提供个示例代码，方便我们定位问题。

代码如下：

可能数据点比较大，您只要看points就行了，我这个点应该在浦东新区最下面，而他跑到了最上面，与实际偏差太大

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div style="width: 500px;height: 500px" id="myCharts">

</div>
<script src="https://cdn.bootcdn.net/ajax/libs/echarts/4.9.0-rc.1/echarts.min.js"></script><script>
    console.log(15, echarts)
    //点
    const points = [{
      name: '深水港',
      value: [121.933898,30.867425]
    }]

    echarts.registerMap('chinaMap',  {
      "type": "FeatureCollection",
      "features": [
        {
          "type": "Feature",
          "properties": {
            "adcode": 310115,
            "name": "浦东新区",
            "center": [
              121.567706,
              31.245944
            ],
            "centroid": [
              121.742177,
              31.083823
            ],
            "childrenNum": 0,
            "level": "district",
            "acroutes": [
              100000,
              310000
            ],
            "parent": {
              "adcode": 310000
            }
          },
          "geometry": {
            "type": "MultiPolygon",
            "coordinates": [
              [
                [
                  [
                    121.570471,
                    30.998354
                  ],
                  [
                    121.570438,
                    30.999176
                  ],
                  [
                    121.569405,
                    30.999454
                  ],
                  [
                    121.567961,
                    31.000876
                  ],
                  [
                    121.570704,
                    31.002298
                  ],
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                    121.570249,
                    31.004561
                  ],
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                    121.57146,
                    31.005636
                  ],
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                ]
              ]
            ]
          }
        }
      ]
    })

    let myCharts = echarts.init(document.querySelector('#myCharts'))
    console.log(2119, myCharts)

    const levelColorMap = ['rgba(241, 109, 115, .8)',
      'rgb(255,235,59)',
      'rgba(147, 235, 248)'
    ]

    const option = {
      backgroundColor: '',
      tooltip: {
        trigger: 'item'
      },
      geo: { //地图相关行为
        //silent: true,
        map: 'chinaMap',
        show: false,
        zoom: 0.8,
        top: '0%',
        label: {
          normal: {
            show: true,
            textStyle: {
              color: '#fff'
            }
          },
          emphasis: {
            show: false,
            textStyle: {
              color: '#fff'
            }
          }
        },

        roam: false,
      },
      series: [
        {
          map: 'chinaMap',
          type: 'map',
          zoom: 1.14,
          label: {
            normal: {
              show: true,
              textStyle: {
                color: '#fff'
              }
            },
            emphasis: {
              textStyle: {
                color: '#fff'
              }
            }
          },
          top: '14%',
          tooltip: {
            show: false
          },
          roam: false,
          itemStyle: {
            normal: {
              areaColor: 'transparent',
              borderColor: '#01f3f6',
              borderWidth: 1,
            },
            emphasis: {
              areaColor: `rgba(1, 243, 246, .4)`,
              textStyle: {
                color: 'white'
              }
            }
          }
        },
        {
          type: 'effectScatter',   //  指明图表类型：带涟漪效果的散点图
          coordinateSystem: 'geo', //  指明绘制在geo坐标系上
          showEffectOn: 'render',
          legendHoverLink:true,       //是否启用图例 hover 时的联动高亮
          hoverAnimation:true,        //是否开启鼠标 hover 的提示动画效果
          rippleEffect: {
            period: 2, //速度
            scale: 6, //缩放
            brushType: 'stroke' //stroke fill
          },
          data: points,
          itemStyle: {
            normal: {
              color: params => {
                return levelColorMap[Math.floor(Math.random() * 3)]
              },
              shadowBlur: 10,
              shadowColor: '#333'
            }
          },
          tooltip: {
            show: true,
            trigger: 'item',
            formatter(val) {
              //console.log(val.data.name)
              return val.data.name
            }
          },
        },
      ]
    }

    //myCharts = this.$echarts.init(this.$refs.companyMap)

    myCharts.setOption(option)

</script>
</body>
</html>

plainheart commented 3 years ago

应该是因为 geo 和 map 设定了 top 以及 zoom 的原因，当前的配置项 effectScatter 无法跟随地图同时缩放。在当前的例子基础上稍微改了下，可作为参考。https://www.makeapie.com/editor.html?c=xmveYphRJD&v=2

zhoufanglu commented 3 years ago

应该是因为 geo 和 map 设定了 top 以及 zoom 的原因，当前的配置项 effectScatter 无法跟随地图同时缩放。在当前的例子基础上稍微改了下，可作为参考。https://www.makeapie.com/editor.html?c=xmveYphRJD&v=2

大佬确实强，非常感谢回答我的问题，有空帮我看另外一个问题吗？问题在这里 issues

还是这个demo,我启动了个定时器，切换了地图数据，从中国-上海-浦东新区，来回切换，我想切换的时候加上切换动画，请问有什么方法可以加吗？
setTimeout(_=>{
this.$echarts.registerMap('chinaMap',  data)//类似这样切换了数据源
}, 1000) 