Public Transit API Developer's Guide

Transit Isoline

The goal of the Transit Transit Isoline service is to enable geospatial analysis of a given region based on the reachability of an area over time as powered by a combination of pedestrian and public transit services. The output of a multi-parameter route calculation is provided as a catchment area (isoline) around an input origin indicating the area that can be reached within a particular travel time, for a specific day of the week. The resulting response contains a list of reachable points as an input for further analysis, as required. This result can be rendered as a polygon or heat map on a map to be used for geospatial analysis, or to enable more specific search requests within a client implementation.

.../v3/isochrone.{format}?<parameter>=<value>...
      
Table 1. Mandatory Parameters
Parameter Data Type Description
app_id String

A 20 bytes Base64 URL-safe encoded string used for the authentication of the client application.
You must include an app_id and app_code with every request. To get an app_code assigned to you, please see Acquiring Credentials.

app_code String

A 20 bytes Base64 URL-safe encoded string used for the authentication of the client application.
You must include an app_id and app_code with every request. To get an app_code assigned to you, please see Acquiring Credentials.

time DateTime Specifies the time in ISO 8601 (for example, 2017-12-25T01:23:45) format.
center Double,Double Specifies the latitude and the longitude of the center point of your search separated by a comma. Where the latitude is in WGS 84-compliant degrees between -90 and 90 and the longitude in WGS 84-compliant degrees between -180 and 180.
Table 2. Optional Parameters
Parameter Data Type Description
lang String Specifies the language of the response. The value complies with the ISO 639-1 standard and defaults to en.
maxChange Integer

Specifies the maximum number of transfers the response should include.

Minimum = 0, Maximum = 6

The default value is 3.

maxDur Integer Specifies the maximum duration of the journeys in minutes.

Minimum = 5, Maximum = 90

The default value is 15 minutes.

modes String

Specifies the transit type filter used to determine which types of transit to include in the response.
By default the parameter is omitted, meaning all supported transit types are permitted.
See Transit Modes page for more information.

timespan Double Specifies a timespan relative to a given time that the response should include. If you specify a timespan of 5 minutes, the response includes connections leaving at the given time and up to 5 minutes later.

Minimum = 0, Maximum = 1000

The default value is 0.

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