[SoC] Re: Multi-modal public transit routing for pgRouting

[Kishore Kumar]

Hi,

Wow, the last week went too fast and I'm presenting my second week report
with this mail.

Things done in the second week:
* Collected more GTFS data through chennai-rail-gtfs[1] project.
* Finalized database topology and confirmed[2] with mentor.
* Wrote a couple of test cases for testing the SQL functions[3].

Things to finish by next week:
* To sketch the public transit routing algorithm as a modified a_star
* To implement sm_public_transit_route function in c.

Roadblocks:
* Couldn't find enough time till today to finish this week's objectives.
This resulted in cutting down on writing tests. Should write tests alongside
implementation.

[1] - https://github.com/justjkk/chennai-rail-gtfs
[2] - http://lists.osgeo.org/pipermail/pgrouting-dev/2011-June/000266.html
[3] -
https://github.com/justjkk/pgrouting/commit/54b5a24fa8b8d88a25d42d161357ea79237861af

Thanks & Regards,
J Kishore kumar.
<https://github.com/justjkk/chennai-rail-gtfs>
On Fri, May 27, 2011 at 11:58 PM, Kishore Kumar <justjkk at gmail.com> wrote:

> Hi,
>
> I am J Kishore kumar. My GSoC project aims to add public transport routing
> functionality to the pgRouting library. All project related documents are
> linked and managed through this wiki page[1]. Following is the first week
> report of this project.
>
> Things done before first week(till May 23rd):
> * Discussed with pgRouting developers regarding the feasibility of the
> project and algorithms.
> * Implemented unit testing infrastructure[2] for testing the existing code
> base.
> * Created a small flask application[3] that uses pgRouting library and
> draws routes on a Openlayers map.
> * Started creating GTFS data for Chennai Railway network[4] to use it in
> writing test cases for this transit library.
>
> Things done in the first week:
> * Added more trips and stop schedules that are converted from pdf documents
> released by railway authorities to [4].
> * Started with actual transit module code[5] and debugging.
> * Adding more route's trips to [4](yet to commit).
>
> Things to finish by next week:
> * Discuss with mentor and finalise database topology(current topology is a
> subset of GTFS without support for fare).
> * Write tests for single modal transit route functions(thus deciding what
> are the input and output parameters).
>
> Roadblocks:
> * Debugging c code written for postgresql functions is very hard. Should
> learn debugging techniques from project developers.
> * Marriage function in family has diverted me from spending more time. Will
> become better in a week.
>
> Thanks,
> J Kishore kumar.
> http://twitter.com/justjkk
>
> [1] -
> https://github.com/pgRouting/pgrouting/wiki/Multi-modal-Public-Transit-Routing
> [2] -
> https://github.com/pgRouting/pgrouting/wiki/Automated-Testing-%28Unit-Tests%29
> [3] - https://github.com/justjkk/dotpath
> [4] - https://github.com/justjkk/chennai-rail-gtfs
> [5] - https://github.com/pgRouting/pgrouting/tree/gsoc-multimodal
>
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