Question

我在一组Lat / Lng坐标上运行了两次查询，并且在有多次中途停留时收到失败的结果。

当中途停留：在单个航路点上设置为false时，搜索会正确返回
当中途停留：在多个航点上设置为false时，搜索以ZERO_RESULTS返回。

当中途停留：在任意数量的航路点上设置为true时，航路点似乎从方向距离被解除。

// Query 1 uses the format: Pickup - Taxi rank coods - Destination:
query = 'from: 50.899083,0.040018 to: 50.875629,0.017858 to: 50.972639,0.016789';


// Query 2 uses the format: Pickup - Waypoint 1 - Waypoint 2 - Destination
query = 'from: 50.899083,0.040018 to: 50.82988,-0.14095 to: 50.87077,0.01328 to: 50.972639,0.016789';


var start = query.split('from: '),
    end = start[1].split(' to: '),
    jLength = end.length,
    routeDistance = [],
    jWaypoints = [],
    request,
    i;

start = end[0];
// At this point, start = 50.899083,0.040018

if( (jLength - 2) > 0 ) {
    for (i = jLength - 1; i >= 0; i--) {
        if( i != ( jLength - 1 ) && i != 0 ) {
            jWaypoints.push( {
                location: end[i],
                stopover: false
            });
        }
    }
}
end = end[jLength - 1];

// end = 50.972639,0.016789
// jWaypoints = [Object { location="50.87077,0.01328", stopover=false}, Object { location="50.82988,-0.14095", stopover=false}];


if( jWaypoints.length >= 1 ) {
    request = {
        origin:start,
        destination:end,
        waypoints: jWaypoints,
        optimizeWaypoints: false,
        travelMode: google.maps.TravelMode.DRIVING
    };
} else {
    request = {
        origin:start,
        destination:end,
        travelMode: google.maps.TravelMode.DRIVING
    };
}


directions.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(response);
        routeDistance.push(response.routes[0].legs[0].distance.value, response.routes[0].legs[0].duration.value);
        passDistance(callback, stopnames, latlons, queries, queryindex, results, routeDistance);
    } else {
        console.log( status );
    }
});

// Query 1 comes out as: [20560, 1472] -> Correct
// Query 2 comes out as: ZERO_RESULTS

/ - 编辑 - /

发现，当中途停留设置为真时，仅拾取最终航路点。仍然没有更明智的。

Answer 1

如果你想使用航点的坐标，它必须是一个google.maps.LatLng对象，而不是一个包含两个以逗号分隔的数字的字符串。

Answer 2

问题在于警告他们之前最后的距离。通过循环遍历所有支路并对结果求和，返回正确的距离。由此：

 routeDistance.push(response.routes[0].legs[0])

为：

jDistance = 0;

for(i = 0, i >= response.routes[0].legs.length, i++) {
    jDistance += response.routes[0].legs[i];
}

routeDistance.push(jDistance);

多次虚假中途停留会导致路线搜索失败

2 个答案: