KSubway
From Chaehyun
Contents |
Korea Subway Positioning System
Overview
This is my experimental result about subway positioning system. In Korea, some local governments construct bus positioning system and provide real time bus positions to public. It is really useful when you wait a bus in a bus station.
However, subway is a different story. I am pretty sure that a subway operator has a system which estimates where each subway is, because it shows when the next station arrives in a station inside. But it does not provide any OpenAPI system so that a 3rd party developers can make a useful application with real time positions of subway.
Therefore, I try to estimate a real time position of each subway. The idea is simple. Subways in Korea arrive at and depart from a station in time except few cases like rush hour or an accident.
- . The time tables of all trains are crawled through the subway operator’s website.
- . And each station’s position is gathered by Yahoo’s open api system.
- . Positions of junction stations which have more than two positions are corrected by hand.
- . The position of subway is estimated using current time, time table of trains, and a position of a station.
Here is a demonstration video which shows you a brief concept of this system.
To do list)
Incorrect path information of a train
sql information is provided...
Progress
2009. 11. 15
* 프로젝트 시작
2009. 11. 16
* http://www.seoulmetro.co.kr/station/trainschedule.action?stationId=0226&mainLine=2 * 지하철 시간표 crawling * 역정보 crawling * Yahoo API http://kr.open.gugi.yahoo.com/document/poisearch.php 를 사용하여, 역의 위치 정보 수집