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underground-live-map
====================

http://traintimes.org.uk/map/tube/

This uses the TfL API to plot the approximate live locations of
all the trains on the London Underground.

It is very hacky. Built on top of many-years-old code, with
many hacks to get things working. But here it is anyway. Feel
free to improve, it shouldn't be hard!

Licence - PDMarker is LGPL. Pins/loading pretty generic. Rest is MIT.

Issues
------
* H&C stations between Paddington and Hammersmith are missing or empty
  in the source data from TfL.

Install
-------
To install:
* Create a local folder for the project and configure this as the root of your webserver
* Create folders /map/tube/ inside the project root.
* Pull the repo into the /map/tube folder, e.g. git pull --recursive https://github.com/dracos/underground-live-map.git
* In terminal, cd to the bin folder. Then Run the script fetch.py to generate the data/london.js output file.

Possible TODOs
--------------
* Fix the remaining stations that are misplaced, consolidate all
  the station/ line information into one authoritative file.
* Locate the Depots, Sidings and other non-station places they can be.
* Improve station canonicalisation.
* Show disruptions/ closed lines/ stations.
* Occasionally more than one train on a line with the same ID (e.g.
  saw two 477s on Northern this morning), the code currently munges
  them together leading to an oddly-behaving train;
* A couple of trains do do weird things in the data, rushing from
  one end to another and back - is this in the source or is the
  script that reads the source making a mistake somehow?
* Initial placement of trains assumes constant inter-station journey
  time. Locate a file of journey times and use that instead. (Doesn't
  matter /too/ much as the front end code will get the train to the
  next station at the right time, hopefully.)
* Store history of live API results so can be used for "Approaching"
  trains to know where they were, and for moreuses than that.
* Much improve the front end so e.g. when it fetches updates every couple
  of minutes via AJAX, it doesn't just redraw the entire map, but
  cleverly updates train positions. Given the server-given starting
  position isn't currently that great, that would need improving too
  to prevent large jumps.


Matthew Somerville
http://www.dracos.co.uk/
http://twitter.com/dracos

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Copyright (c) 2010 Matthew Somerville

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