OpenRouteService Snapping API
Snap coordinates to the nearest road network nodes
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OpenAPI Specification
openapi: 3.2.0
info:
title: OpenRouteService Directions Snapping API
description: OpenRouteService is a free, open-source geospatial API platform built on OpenStreetMap data. It provides routing directions for multiple transport modes, isochrones for reachability analysis, time-distance matrices, geocoding, elevation data, points of interest, and vehicle route optimization for logistics and humanitarian use cases.
version: v2
contact:
name: OpenRouteService Support
url: https://ask.openrouteservice.org
email: support@smartmobility.heigit.org
license:
name: GNU General Public License v3.0
url: https://github.com/GIScience/openrouteservice/blob/main/LICENSE
x-ors-docs: https://giscience.github.io/openrouteservice/
servers:
- url: https://api.openrouteservice.org
description: OpenRouteService Public API
security:
- ApiKeyAuth: []
tags:
- name: Snapping
description: Snap coordinates to the nearest road network nodes
paths:
/v2/snap/{profile}:
post:
tags:
- Snapping
summary: Snap Coordinates to Road Network
description: Snaps arbitrary coordinates to the nearest road network nodes. Supports up to 5,000 locations per request, useful for map matching and correcting GPS coordinates to the road network.
operationId: snapCoordinates
parameters:
- $ref: '#/components/parameters/profile'
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/SnappingRequest'
responses:
'200':
description: Snapped coordinates
content:
application/json:
schema:
$ref: '#/components/schemas/SnappingResponse'
'400':
$ref: '#/components/responses/BadRequest'
'401':
$ref: '#/components/responses/Unauthorized'
'403':
$ref: '#/components/responses/Forbidden'
'500':
$ref: '#/components/responses/InternalServerError'
components:
schemas:
SnappingRequest:
type: object
required:
- locations
properties:
locations:
type: array
description: Array of coordinates as [longitude, latitude] pairs to snap to the road network. Maximum 5,000 locations per request.
maxItems: 5000
items:
type: array
items:
type: number
format: double
minItems: 2
maxItems: 2
example:
- - 8.681495
- 49.41461
- - 8.686507
- 49.41943
maximum_search_radius:
type: number
description: Maximum search radius in meters to find a road network node
format: double
default: 350
return_metadata:
type: boolean
description: Include metadata about snapping results
default: false
id:
type: string
description: Arbitrary identifier for tracking requests
ErrorResponse:
type: object
properties:
error:
type: object
properties:
code:
type: integer
description: Error code
message:
type: string
description: Human-readable error message
info:
type: object
properties:
engine:
$ref: '#/components/schemas/EngineInfo'
attribution:
type: string
timestamp:
type: integer
format: int64
SnappingResponse:
type: object
properties:
locations:
type: array
description: Snapped locations with road network coordinates
items:
type: object
properties:
location:
type: array
items:
type: number
description: Snapped coordinate [longitude, latitude]
name:
type: string
description: Road name at snapped location
snapped_distance:
type: number
format: double
description: Distance from original to snapped location in meters
metadata:
type: object
properties:
attribution:
type: string
service:
type: string
timestamp:
type: integer
format: int64
engine:
$ref: '#/components/schemas/EngineInfo'
EngineInfo:
type: object
properties:
version:
type: string
description: ORS engine version
build_date:
type: string
format: date-time
description: Build date of the ORS engine
parameters:
profile:
name: profile
in: path
description: Specifies the transport mode profile for routing
required: true
schema:
type: string
enum:
- driving-car
- driving-hgv
- cycling-regular
- cycling-road
- cycling-mountain
- cycling-electric
- foot-walking
- foot-hiking
- wheelchair
example: driving-car
responses:
Forbidden:
description: Forbidden - API key does not have permission for this operation
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
InternalServerError:
description: Internal server error
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
Unauthorized:
description: Unauthorized - missing or invalid API key
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
BadRequest:
description: Bad request - invalid parameters or request body
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: Authorization
description: API key obtained from https://openrouteservice.org