Route

---

A Route Maps API is a feature provided by VIETMAP that allows developers to calculate and display the optimal route between two or more locations on a map. With a Route Maps API, developers can specify the start and end points of a journey, along with any additional constraints such as preferred mode of transportation, and retrieve a detailed route that can be displayed on a map. The API may also provide information such as the total distance, estimated travel time, and turn-by-turn directions. Developers can use Route Maps APIs to create applications that help with navigation, transportation planning, and logistics management.

URL

https://maps.vietmap.vn/api/route?api-version=1.1&apikey={your-apikey}&point={point}&point={point}&points_encoded={points_encoded}&vehicle={vehicle}

Method

GET

Parameters

Parameter	Type	Required	Default	Description
point	array string	yes	none	The points for which the route should be calculated. Format: [latitude,longitude]. Specify at least an origin and a destination. Via points are possible. The maximum number depends on your plan. Example query: &point=lat,lng
points_encoded	boolean	no	true	Allows changing the encoding of location data in the response. The default is polyline encoding, which is compact but requires special client code to unpack. Set this parameter to false to switch the encoding to simple coordinate pairs like [lon,lat]. See the description of the response format for more information. We suggest this query should receive true value to decrease the size of the response JSON.
vehicle	string	no	car	Enum: car, bike, foot, motorcycle. Config the vehicle profiles for which the route should be calculated.
optimize	string	no	false	Execute TSP if the value = true

Example

Input

https://maps.vietmap.vn/api/route?api-version=1.1&apikey={your-apikey}&point=10.79628438955497,106.70592293472612&point=10.801891047584164,106.70660958023404&vehicle=motorcycle

Response

{
    "license": "vietmap",
    "code": "OK",
    "messages": null,
    "paths": [
        {
            "distance": 2194.4,
            "weight": 351.4,
            "time": 351400,
            "transfers": 0,
            "points_encoded": true,
            "bbox": [
                106.70594,
                10.79479,
                106.71154,
                10.80325
            ],
            "points": "}s{`Ac_hjSjAkCFQRu@Lu@F_@D]Ng@ZaALa@JY~AoDDEmBiBe@[WMg@M_@KmA]uA_@a@KkA]qA[[Gs@MUE_AKu@Co@Ew@CYAmAGeBKaAEsAKCQMQUGM?KBIFGHCJoBO{@Ck@AQ@MZAJAjAG|ACz@MnCEnAGlBCx@EjA?\\EvAEjBE~@Cr@F?HqBv@DBSDIBAl@HFADAVSD@JLB@h@BDADEDAJ@",
            "instructions": [
                {
                    "distance": 403.4,
                    "heading": 0,
                    "sign": 0,
                    "interval": [
                        0,
                        11
                    ],
                    "text": "Tiếp tục theo Nguyễn Cửu Vân",
                    "time": 54800,
                    "street_name": "Nguyễn Cửu Vân",
                    "last_heading": null
                },
                /// More guide direction here
                {
                    "distance": 58.7,
                    "heading": 0,
                    "sign": 0,
                    "interval": [
                        71,
                        79
                    ],
                    "text": "Tiếp tục theo Đường Không Tên",
                    "time": 26300,
                    "street_name": "Đường Không Tên",
                    "last_heading": null
                },
                {
                    "distance": 0,
                    "heading": 0,
                    "sign": 4,
                    "interval": [
                        79,
                        79
                    ],
                    "text": "Đích đến",
                    "time": 0,
                    "street_name": "Đường Không Tên",
                    "last_heading": null
                }
            ],
            "snapped_waypoints": "c_hjS}s{`AeDab@"
        }
    ]
}

Response description

Parameter	Type	Description
license	string	License type associated with the routing data
code	string	Status code indicating the success or failure of the request
messages	string	Additional messages related to the request (if any)
paths	array	Array containing route information including distance, time, etc.

For each route in the paths array:

Sub-Parameter	Type	Description
distance	number	Total distance of the route (in meters)
weight	number	Weight assigned to the route
time	int	Total time required for the route (in milliseconds)
transfers	int	Number of transfers required for the route
points_encoded	boolean	Whether the points and snapped_waypoints fields are polyline-encoded strings rather than JSON arrays of coordinates
bbox	array	The bounding box of the route geometry. Format: [minLon, minLat, maxLon, maxLat]
points	string	Encoded points representing the route using google polyline 5 format. If the points_encoded is false, points will response a list of [lat,lng] format.
instructions	array	Array containing turn-by-turn navigation instructions
snapped_waypoints	string	Snapped waypoints representing the route (if available)

For each navigation instruction in the instructions array:

Sub-Parameter	Type	Description
distance	double	Distance until the next instruction (in meters)
heading	int	Heading direction of the instruction (if available)
sign	int	Direction sign of the instruction, sign description here
interval	array	Two indices into points, referring to the beginning and the end of the segment of the route this instruction refers to.
text	string	A description what the user has to do in order to follow the route.
time	int	The duration for this instruction, in milliseconds.
street_name	string	The name of the street to turn onto in order to follow the route.
last_heading	null	Last heading direction of the instruction (if available)