Google 将 Json 映射到 GPX

Question

我正在尝试从 google 时间轴获取坐标以将它们转换为 gpx 格式。是否存在可以从 google 地图时间轴 json 中提取时间和位置的 Api？

json 文件如下所示：

{
  "locations" : [{
    "timestampMs" : "1383767355903",
    "latitudeE7" : 481848021,
    "longitudeE7" : 112554011,
    "accuracy" : 100
  }, {
    "timestampMs" : "1383767295887",
    "latitudeE7" : 481848003,
    "longitudeE7" : 112554027,
    "accuracy" : 100
  }]
}

Answer 1

我认为您的坐标以 google 像素为单位，您需要将此坐标转换为经纬度。

function latLng2Point(latLng, map) {
  var topRight = map.getProjection().fromLatLngToPoint(map.getBounds().getNorthEast());
  var bottomLeft = map.getProjection().fromLatLngToPoint(map.getBounds().getSouthWest());
  var scale = Math.pow(2, map.getZoom());
  var worldPoint = map.getProjection().fromLatLngToPoint(latLng);
  return new google.maps.Point((worldPoint.x - bottomLeft.x) * scale, (worldPoint.y - topRight.y) * scale);
}

function point2LatLng(point, map) {
  var topRight = map.getProjection().fromLatLngToPoint(map.getBounds().getNorthEast());
  var bottomLeft = map.getProjection().fromLatLngToPoint(map.getBounds().getSouthWest());
  var scale = Math.pow(2, map.getZoom());
  var worldPoint = new google.maps.Point(point.x / scale + bottomLeft.x, point.y / scale + topRight.y);
  return map.getProjection().fromPointToLatLng(worldPoint);
}

Google 将 Json 映射到 GPX

Google Maps Json to GPX

javascript

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