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# 如何根据时间范围计算服务区域
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您可以使用 CalculateIsolines API 确定在指定的时间或距离范围内可到达的服务区域，并考虑到道路网络和交通状况。此功能支持应用程序为餐厅、杂货店或其他服务提供商定义服务区域，这有助于规划燃油效率并定义服务覆盖范围的可达区域。

## 潜在使用案例
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+ **规划服务区域：**使用此 API 可根据行程时间或距离为餐厅或杂货配送等服务规划可达区域。

## 示例
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### 使用 Car TravelMode 根据时间范围计算服务区域
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------
#### [ Sample request ]

```
{
    "Origin": [
        -123.11679620827039,
        49.28147612192166
    ],
    "DepartureTime": "2024-10-28T21:27:56Z",
    "Thresholds": {
        "Time": [
            500,
            1000,
            1500
        ]
    },
    "TravelMode": "Car"
}
```

------
#### [ Sample response ]

```
{
    "DepartureTime": "2024-10-28T14:27:56-07:00",
    "IsolineGeometryFormat": "FlexiblePolyline",
    "Isolines": [
        {
            "Connections": [],
            "Geometries": [
                {
                    "PolylinePolygon": [
                        "Redacted"
                    ]
                }
            ],
            "TimeThreshold": 500
        },
        {
            "Connections": [],
            "Geometries": [
                {
                    "PolylinePolygon": [
                        "Redacted"
                    ]
                }
            ],
            "TimeThreshold": 1000
        },
        {
            "Connections": [],
            "Geometries": [
                {
                    "PolylinePolygon": [
                        "Redacted"
                    ]
                }
            ],
            "TimeThreshold": 1500
        }
    ],
    "SnappedOrigin": [
        -123.11687,
        49.2813999
    ]
}
```

------
#### [ cURL ]

```
curl --request POST \
  --url 'https://routes.geo.eu-central-1.amazonaws.com/v2/isolines?key=Your_key' \
  --header 'Content-Type: application/json' \
  --data '{
    "Origin": [
        -123.11679620827039,
        49.28147612192166
    ],
    "DepartureTime": "2024-10-28T21:27:56Z",
    "Thresholds": {
        "Time": [
            500,
            1000,
            1500
        ]
    },
    "TravelMode": "Car"
}'
```

------
#### [ AWS CLI ]

```
aws geo-routes calculate-isolines --key ${YourKey} \
--origin -123.11679620827039 49.28147612192166 \
--departure-time "2024-10-28T21:27:56Z" \
--thresholds '{"Time": [500, 1000, 1500]}' \
--travel-mode "Car"
```

------