Fig. 7From: A new approach to the space–time analysis of big data: application to subway traffic data in SeoulThe second mode of CSEOF representing the weekly patterns of passengers for Subway Line #2. a hourly and total number of boarding passengers at each of the 50 subway stations numbered from 201 to 250; b hourly and total number of alighting passengers; c number of boarding (red) and alighting passengers in all stations; and d corresponding amplitude time series. Four sets of stations show regular patterns during weekdaysBack to article page