R help - Apr 2019 - New package to query the OpenTripPlanner (OTP) API

Dear all

A new R package 'otpr' is now available on CRAN. It's a wrapper for
the OpenTripPlanner (OTP) API and is primarily aimed at researchers and
transport planners who want to use OTP to carry out accessibility studies or
generate variables for transport models. The package consists of four main
functions:

otp_connect() - defines and tests the connection to an OTP instance.
otp_get_distance() - gets the distance in metres between an origin and
destination on the street and/or path network by specified mode.
otp_get_times() - in its simplest use case gets the journey time between an
origin and destination by specified mode(s). It can also return more detailed
information, breaking down the journey by transit time, walking time, waiting
time and the number of transfers.
otp_get_isochrone() - returns one or more travel time isochrones for a location
in GeoJSON format. These can be generated either from or to the specified
location.

The package currently supports a subset of the parameters that are available for
the OTP 'planner' and 'isochrone' API resources. This is based
on my experience of using OTP to generate this type of data and to keep the
functions relatively simple from the user perspective. For a future release I
will be allowing a larger range of parameters to be optionally passed through to
the API query, giving greater flexibility but still keeping the external
functions simple for users who don't need such detailed control.

For more information, including code examples, take a look at the GitHub
repository for the package:

https://github.com/marcusyoung/otpr
 
I also have an OTP intermediate level tutorial - 'creating and querying your
own multi-modal route planner' -  which incorporates use of the package:

https://github.com/marcusyoung/otp-tutorial

I'd welcome any feedback as well as suggestions for future development. 

Best wishes

Marcus

---------------------------------------------------
Dr Marcus Young
Research Fellow
Transportation Research Group
University of Southampton

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