isochronerequest

Used to request an isochrone, which is the sequence of points of equal travel time from a particular location. The centre location can be defined either by specifying a latitude and longitude or by using an existing location within the input data.

Syntax:

[ DynamicComponentDependency ] isochronerequest IsochroneRequestName {
[ TimeSpanUOM ] [ TimeZoneOverride ] [ ChangeDetection ] [ CustomChangeHandler ] #SqlDml.QueryBlock ;
}

Mandatory columns

Column Name	Data Type	Description	Default Value
id	String(32)	Defines a unique id for the isochrone.

Optional columns

Column Name	Data Type	Description	Default Value
calculate_envelope	Number (0 = False, 1 = True)	Specifies whether to return only the outer points that can be reached within the time. If false return all points that can be reached within the time.	True
end_datetime	Date	If specified, the travels will be calculated assuming they end at this time.
grid_metres	Double	Specifies that a grid of points this distance apart should be used as the basis of the calculation.
latitude	Double	Specifies the latitude of the centre location of the isochrone.
location_id	String(32)	Defines the id of the centre location of the isochrone.
longitude	Double	Defines the longitude of the centre location of the isochrone.
profile_id_travel	String(32)	Defines the id of the profile to use when calculating travel times.
speed_factor	Double	Defines an additional speed factor to apply when calculating travels.
start_datetime	Date	If specified, the travels will be calculated assuming they start at this time.
travel_time	Number (minutes by default)	Defines the maximum travel time on which the isochrone calculation should be based.



            isochronerequest IsochroneRequest {{SelectName}} {
               SELECT
                     ..                  id,
                  -- optional columns
                     ..                  calculate_envelope,
                     ..                  end_datetime,
                     ..                  grid_metres,
                     ..                  latitude,
                     ..                  location_id,
                     ..                  longitude,
                     ..                  profile_id_travel,
                     ..                  speed_factor,
                     ..                  start_datetime,
                     ..                  travel_time
               FROM {{sourceTableName}}
               WHERE ...;
            }

Note: All selected columns must have correct aliases that match a IFS Scheduling IsochroneRequest.

IsochroneRequestName

Syntax:

<Identifier>

This page is generated from IFS Developer Studio at 2021-08-13 08:48.