修复nikebus改为vue版本后的一些bug

<template>

  <v-chart class="chart" :option="echartsOption" :autoresize="true" />

  <img src="https://visitor-badge.laobi.icu/badge?page_id=nikebus" alt="visitor badge"

       class="visitor-badge"/>

  <img src="https://visitor-badge.laobi.icu/badge?page_id=nikebus" alt="visitor badge" class="visitor-badge" />

</template>

<script>

import {

  TitleComponent,

  TooltipComponent,

  // LegendComponent,

  MarkPointComponent,

  // MarkPointComponent,

  GridComponent,

} from "echarts/components";

  SVGRenderer,

  TitleComponent,

  TooltipComponent,

  MarkPointComponent,

  // LegendComponent,

  GridComponent,

  ScatterChart,

  }),

  methods: {

    setEchartsOption(appendOption) {

      this.echartsOption = Object.assign({}, this.echartsOption, appendOption)

      this.echartsOption = appendOption

    },

    //加载线路与站点信息

    load_data() {

          navigator.geolocation.getCurrentPosition(pos => {

            let lat = pos.coords.latitude,

              lng = pos.coords.longitude;

            //标记出最近的站点

            const p = point([lng, lat])

            const nearest_line1 = nearestPoint(p, this.stops1);

              coord: [2, line2_pos_dir2]

            }

            ]

            this.setEchartsOption({

              series: [{

                markPoint: {

    this.load_data();

    this.timer = setInterval(() => {

      this.refresh();

    }, 5000);

    }, 500);//0.5秒刷新一次位置，每10次刷新中，9次为推测的位置，1次为抓取的位置

  },

  unmounted() {

    clearInterval(this.timer);