ClosestFacilityParameters

Property Overview

Property Details

accumulateAttributes String[]

Use this property to specify whether the operation should accumulate values other than the value specified for impedanceAttribute. For example, if your impedanceAttribute is set to travel-time, the total travel time for the route will be calculated by the operation. However, if you also want to calculate the total distance of the route in miles, you can specify Miles as the value for the accumulateAttributes property.

Possible Values:"kilometers"|"miles"|"minutes"|"travel-time"|"truck-minutes"|"truck-travel-time"|"walk-time"|"string"

See also

• Understanding the network attribute.

• accumulateAttributeNames

apiKey String

Since: ArcGIS API for JavaScript 4.21

An authorization string used to access a resource or service. API keys are generated and managed in the ArcGIS Developer dashboard. An API key is tied explicitly to an ArcGIS account; it is also used to monitor service usage. Setting a fine-grained API key on a specific class overrides the global API key.

See also

• API keys

• Display a map tutorial - get an API key

• token

Example

const start = new Graphic({
  geometry: {
    type: "point",
    x: -13656212.041436872,
    y: 5703897.952531632,
    spatialReference
  }
});

const stores = [
  [-122.67484, 45.52087],
  [-122.68365, 45.52327],
  [-122.66406, 45.52378]
];

const storeGraphics = stores.map(
  (store) =>
    new Graphic({
      geometry: {
        type: "point",
        longitude: store[0],
        latitude: store[1],
        spatialReference
      }
    })
);

const closestFacilityParameters = new ClosestFacilityParameters({
  apiKey: "YOUR_API_KEY",
  incidents: new FeatureSet({
    features: [start]
  }),
  facilities: new FeatureSet({
    features: storeGraphics
  }),
  defaultTargetFacilityCount: 2
});

const results = await solve(url, closestFacilityParameters);

attributeParameterValues AttributeParameterValue[]

Use this property to specify additional values required by an attribute or restriction, such as to specify whether the restriction prohibits, avoids, or prefers travel on restricted roads. If the restriction is meant to avoid or prefer roads, you can further specify the degree to which they are avoided or preferred using this property. For example, you can choose to never use toll roads, avoid them as much as possible, or prefer them.

See also

• attributeParameterValues

declaredClass Stringreadonly inherited

The name of the class. The declared class name is formatted as esri.folder.className.

defaultCutoff Number

The travel time or travel distance value at which to stop searching for facilities for a given incident. For example, while finding the closest hospitals from the site of an accident, a cutoff value of 15 minutes means that the tool will search for the closest hospital within 15 minutes from the incident. If the closest hospital is 17 minutes away, no routes will be returned in the output routes. A cutoff value is especially useful when searching for multiple facilities.

The unit for this parameter is based on the unit of the impedance attribute specified using the impedanceAttributeName parameter or the impedanceAttributeName of the travel mode if travel mode is specified . If the impedanceAttributeName parameter is TravelTime, the defaultCutoff is specified in minutes. Otherwise, the value is specified in miles or kilometers based on whether the impedanceAttributeName is set to Miles or Kilometers, respectively.

See also

• defaultCutoff

defaultTargetFacilityCount Number

The number of closest facilities to find per incident. This is useful in situations in which multiple fire engines may be required from different fire stations, such as a fire. You can specify, for example, to find the three nearest fire stations to a fire.

The value for this parameter can be overridden on a per incident basis by specifying a value for the TargetFacilityCount attribute when specifying the incidents parameter.

See also

• defaultTargetFacilityCount

directionsLanguage String

The language that will be used when generating travel directions. This parameter applies only when the returnDirections parameter is set to true. The service supports generating directions in the following languages: ar, bg, bs, ca, cs, da, de, el, en, es, et, fi, fr, he, hr, hu, id, it, ja, ko, lt, lv, nb, nl, pl, pt-BR, pt-PT, ro, ru, sk, sl, sr, sv, th, tr, uk, vi, zh-CN, zh-HK and zh-TW.

See also

• directionsLanguage

directionsLengthUnits String

Specify the units for displaying travel distance in the driving directions. This parameter applies only when the returnDirections parameter is set to true.

Possible Values:"centimeters"|"decimal-degrees"|"decimeters"|"feet"|"inches"|"kilometers"|"meters"|"miles"|"millimeters"|"nautical-miles"|"points"|"yards"

See also

• directionsLengthUnits

directionsOutputType String

Define the content and verbosity of the driving directions. This parameter applies only when the returnDirections parameter is set to true.

Possible Values:"complete"|"complete-no-events"|"featuresets"|"instructions-only"|"standard"|"summary-only"

See also

• directionsOutputType

directionsStyleName String

Specify the name of the formatting style for the directions.

Possible Values:"desktop"|"navigation"|"campus"

See also

• directionsStyleName

directionsTimeAttribute String

Set the time-based impedance attribute to display the duration of a maneuver, such as "Go northwest on Alvorado St. for 5 minutes." The units for all the time attributes is minutes.

Possible Values:"travel-time"|"truck-travel-time"|"walk-time"|"minutes"|"truck-time"

See also

• directionsTimeAttributeName

facilities DataLayer|FeatureSet|NetworkFeatureSet|NetworkUrl

One or more locations that are searched for when finding the closest location.

See also

• facilities

Example

const closestFacilityParameters = new ClosestFacilityParameters({
  facilities: new FeatureSet({
    features: [
      new Graphic({
        geometry: new Point({ x: -122.4079, 37.78356 }),
        attributes: {
          "Name": "Fire Station 34",
          "Attr_TravelTime": 4
        }
      }),
      new Graphic({
        geometry: new Point({ x: -122.404, 37.782 }),
        attributes: {
          "Name": "Fire Station 29",
          "Attr_TravelTime": 5
        }
      })
    ]
  })
});

geometryPrecision Number

Since: ArcGIS API for JavaScript 4.25

Use this property to specify the number of decimal places in the response geometries returned by solve operation. This applies to x- and y-values only (not m- or z-values).

See also

• geometryPrecision

geometryPrecisionM Number

Since: ArcGIS API for JavaScript 4.25

Use this property to specify the number of decimal places in the response geometries returned by solve operation. This applies to m-value only (not x-,y- or z-values).

See also

• geometryPrecisionM

geometryPrecisionZ Number

Since: ArcGIS API for JavaScript 4.25

Use this property to specify the number of decimal places in the response geometries returned by a solve operation. This applies to z-value only (not x-,y- or m-values).

See also

• geometryPrecisionZ

ignoreInvalidLocations Boolean

Since: ArcGIS API for JavaScript 4.25

Specify whether invalid input locations should be ignored when finding the best solution. An input point is deemed invalid by the operation if it is not within the maximum snap tolerance of any traversable street. When true invalid points are ignored. When false any invalid point in your request will cause the operation to return a failure.

See also

• ignoreInvalidLocations

impedanceAttribute String

Specifies the impedance.

Impedance is a value that quantifies travel along the transportation network. Travel distance is an example of impedance; it quantifies the length of walkways and road segments. Similarly, drive time—the typical time it takes to drive a car along a road segment—is an example of impedance. This property will be ignored if travelMode is set.

Possible Values:"kilometers"|"miles"|"minutes"|"travel-time"|"truck-minutes"|"truck-travel-time"|"walk-time"

See also

• Understanding the network attribute

• impedanceAttributeName

incidents DataLayer|FeatureSet|NetworkFeatureSet|NetworkUrl

One or more locations from which the service searches for the nearby locations

See also

• incidents

Example

const closestFacilityParameters = new ClosestFacilityParameters({
  incidents: new FeatureSet({
    features: [
      new Graphic({
        geometry: new Point({ x: -122.4079, 37.78356 }),
        attributes: {
          "Name": "Fire Incident 1",
          "Attr_TravelTime": 4
        }
      }),
      new Graphic({
        geometry: new Point({ x: -122.404, 37.782 }),
        attributes: {
          "Name": "Crime Incident 45",
          "Attr_TravelTime": 5
        }
      })
    ]
  })
});

outputGeometryPrecision Number

Use this property to specify by how much you want to simplify the route geometry returned by the operation. Simplification maintains critical points on a route, such as turns at intersections, to define the essential shape of the route and removes other points. The value of this property, regardless of whether you rely on the default or explicitly set a value, is overridden when you pass in travelMode.

The units are specified with the outputGeometryPrecisionUnits parameter.

See also

• outputGeometryPrecision

outputGeometryPrecisionUnits String

Use this property to specify the units for the value specified for the outputGeometryPrecision parameter. The value of this parameter, regardless of whether you rely on the default or explicitly set a value, is overridden when you pass in travelMode.

Possible Values:"centimeters"|"decimal-degrees"|"decimeters"|"feet"|"inches"|"kilometers"|"meters"|"miles"|"millimeters"|"nautical-miles"|"points"|"yards"

See also

• outputGeometryPrecisionUnits

outputLines String

Use this property to specify the type of route features that are output by the operation. This parameter is applicable only if the returnRoutes parameter is set to true.

Possible Value	Description
none	Do not return any shapes for the routes.
straight	Return a straight line between the stops.
true-shape	Return the exact shape of the resulting route that is based on the underlying streets.
true-shape-with-measure	Return the exact shape of the resulting route that is based on the underlying streets and include route measurements that keep track of the cumulative travel time or travel distance along the route relative to the first stop.

Possible Values:"none"|"straight"|"true-shape"|"true-shape-with-measure"

See also

• outputLines

outSpatialReference SpatialReference

Use this property to specify the spatial reference of the geometries, such as line or point features, returned by a solve operation.

See also

• outSR

overrides Object

Since: ArcGIS API for JavaScript 4.25

Specify additional settings that can influence the behavior of the solver when finding solutions for the network analysis problems.

See also

• overrides

pointBarriers Collection<PointBarrier>|DataLayer|FeatureSet|NetworkFeatureSet|NetworkUrl

Use this property to specify one or more points that will act as temporary restrictions or represent additional time or distance that may be required to travel on the underlying streets. For example, a point barrier can be used to represent a fallen tree along a street or a time delay spent at a railroad crossing.

See also

• barriers

polygonBarriers Collection<PolygonBarrier>|DataLayer|FeatureSet|NetworkFeatureSet|NetworkUrl

Use this property to specify polygons that either completely restrict travel or proportionately scale the time or distance required to travel on the streets intersected by the polygons.

See also

• polygonBarriers

polylineBarriers Collection<PolylineBarrier>|DataLayer|FeatureSet|NetworkFeatureSet|NetworkUrl

Use this property to specify one or more lines that prohibit travel anywhere the lines intersect the streets. For example, a parade or protest that blocks traffic across several street segments can be modeled with a line barrier.

See also

• polylineBarriers

preserveObjectID Boolean

Since: ArcGIS API for JavaScript 4.25

Use this property to specify if the Object IDs specified for input locations such as stops or barriers should be preserved when the input locations are returned as output.

See also

• preserveObjectID

restrictionAttributes String[]

Use this property to specify which restrictions should be honored by the operation. A restriction represents a driving preference or requirement. This value is ignored if travelMode is specified.

Possible Values:"any-hazmat-prohibited"|"avoid-carpool-roads"|"avoid-express-lanes"|"avoid-ferries"|"avoid-gates"|"avoid-limited-access-roads"|"avoid-private-roads"|"avoid-roads-unsuitable-for-pedestrians"|"avoid-stairways"|"avoid-toll-roads"|"avoid-toll-roads-for-trucks"|"avoid-truck-restricted-roads"|"avoid-unpaved-roads"|"axle-count-restriction"|"driving-a-bus"|"driving-a-taxi"|"driving-a-truck"|"driving-an-automobile"|"driving-an-emergency-vehicle"|"height-restriction"|"kingpin-to-rear-axle-length-restriction"|"length-restriction"|"preferred-for-pedestrians"|"riding-a-motorcycle"|"roads-under-construction-prohibited"|"semi-or-tractor-with-one-or-more-trailers-prohibited"|"single-axle-vehicles-prohibited"|"tandem-axle-vehicles-prohibited"|"through-traffic-prohibited"|"truck-with-trailers-restriction"|"use-preferred-hazmat-routes"|"use-preferred-truck-routes"|"walking"|"weight-restriction"|"string"

See also

• restrictionAttributeNames

restrictUTurns String

Specifies how U-Turns should be handled.

Possible Value	Description
allow-backtrack	U-turns are permitted everywhere. Allowing U-turns implies that the vehicle can turn around at a junction and double back on the same street.
at-dead-ends-only	U-turns are prohibited at all junctions and intersections and are permitted only at dead ends.
no-backtrack	U-turns are prohibited at all junctions, intersections, and dead-ends.
at-dead-ends-and-intersections	U-turns are prohibited at junctions where exactly two adjacent streets meet.

Possible Values:"allow-backtrack"|"at-dead-ends-only"|"no-backtrack"|"at-dead-ends-and-intersections"

See also

• restrictUTurns

returnDirections Boolean

Specify whether the operation should generate driving directions for each route. If true directions are configured based on the values for the directionsLanguage, directionsOutputType, directionsStyleName, and directionsLengthUnits properties.

Default Value:false

See also

• returnDirections

returnFacilities Boolean

Determines if facilities will be returned by the service.

Default Value:false

See also

• returnFacilities

returnIncidents Boolean

Determines if incidents will be returned by the service.

Default Value:false

See also

• returnIncidents

returnPointBarriers Boolean

Specify whether point barriers will be returned by the routing operation.

Default Value:false

See also

• returnBarriers

returnPolygonBarriers Boolean

Specify whether polygon barriers will be returned by the routing operation.

Default Value:false

See also

• returnPolygonBarriers

returnPolylineBarriers Boolean

Specify whether polyline barriers will be returned by the routing operation.

Default Value:false

See also

• returnPolylineBarriers

returnRoutes Boolean

Use this property to specify if the operation should return routes. If true, the shape of the routes depends on the value for the outputLines property.

Default Value:true

See also

• returnCFRoutes

returnTraversedEdges Boolean

Since: ArcGIS API for JavaScript 4.25

Specify whether traversed edges will be returned by the operation.

See also

• returnTraversedEdges

returnTraversedJunctions Boolean

Since: ArcGIS API for JavaScript 4.25

Specify whether traversed junctions will be returned by the operation.

See also

• returnTraversedJunctions

returnTraversedTurns Boolean

Since: ArcGIS API for JavaScript 4.25

Specify whether traversed turns will be returned by the operation.

See also

• returnTraversedTurns

returnZ Boolean

Since: ArcGIS API for JavaScript 4.25

Include z values for the returned geometries if supported by the underlying network.

See also

• returnZ

timeOfDay Date|String

Specify the time and date to depart from or arrive at incidents or facilities. You can also specify a value of "now", to set the depart or arrive time to current time.

For ClosestFacilityParameters the timeOfDay is always "now".

See also

• timeOfDay

timeOfDayIsUTC Boolean

Since: ArcGIS API for JavaScript 4.25

Specify the time zone or zones of the timeOfDay property.

See also

• timeOfDayIsUTC

timeOfDayUsage String

The timeOfDay parameter value represents the arrival or departure time for the routes.

Possible Values:"start"|"end"

See also

• timeOfDayUsage

travelDirection String

Specifies how the travel direction for the closest facility search will be measured.

Possible Value	Description
from-facility	Direction of travel is from facilities to incidents.
to-facility	Direction of travel is from incidents to facilities.

Possible Values:"from-facility"|"to-facility"

See also

• travelDirection

travelMode TravelMode

A travel mode represents a means of transportation, such as driving or walking. Travel modes define the physical characteristics of a vehicle or pedestrian.

Use networkService.fetchServiceDescription to obtain a list of predefined travel modes and the default travel mode that is used if one is not specified in a routing reqest.

See also

• Introduction to travel modes

• Default travel modes

• travelMode

useHierarchy Boolean

Specify whether hierarchy should be used when finding the shortest paths. This value is ignored if a travelMode is specified.

Default Value:false

See also

• useHierarchy

Method Overview

Method Details

addHandles(handleOrHandles, groupKey)inherited

Since: ArcGIS API for JavaScript 4.25

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

// Handle gets removed when the object is destroyed.
this.addHandles(handle);

Parameters

handleOrHandles WatchHandle|WatchHandle[] Handles marked for removal once the object is destroyed.

groupKey * optional Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

clone(){this}

Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.

Returns

Type	Description
this	A deep clone of the class instance that invoked this method.

fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameter

json Object A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns

Type	Description
*	Returns a new instance of this class.

hasHandles(groupKey){Boolean}inherited

Since: ArcGIS API for JavaScript 4.25

Returns true if a named group of handles exist.

Parameter

groupKey * optional A group key.

Returns

Type	Description
Boolean	Returns true if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles(groupKey)inherited

Since: ArcGIS API for JavaScript 4.25

Removes a group of handles owned by the object.

Parameter

groupKey * optional A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.

Type Definitions

AttributeParameterValue

An object describing the parameter values for the attributeParameterValues property of ClosestFacilityParameters.

Properties

attributeName String The name of the restriction.

parameterName String The name of the parameter associated with the restriction. A restriction can have one or more parameterName properties.

value String|Number The value for parameterName.