City Pulse: Global Metro Line Development History
城市脉搏：全球地铁线路发展历史

The metro is the pulse of a city. Yet, the complexity of metro systems, with their extensive data spanning continents, nations, and cities, surpasses human comprehension. Inspired by Harry Beck's 1933 design of the London Underground map, we designed further abstracted and simplified metro lines. Starting from the topological structure of metros, we generate City Squares by calculating line colors, mileage, and coverage data. These vibrant, color-rich Squares serve as a window into global development, offering a snapshot of a city's metro at any given moment. Such a dynamic visualization not only reveals the city changes but also provides a global overview and comparison, yielding insights from the data. While our primary medium is video to narrate the global metro story, we also offer a website (https://vis.pku.edu.cn/metro/dist/#/) for those who wish to explore metro stories more pertinent to them. This site allows users to explore the data through interactive engagement.
地铁是城市的脉搏。但是地铁系统过于复杂，在全球中，大洲、国家、城市的地铁发展带来的大量数据，超出了人类可以理解的尺度。我们从1933年Harry Beck设计的伦敦地铁图中得到灵感，进一步对地铁线路进行抽象和简化。从地铁的拓扑结构出发，通过计算地铁线路颜色、里程、覆盖率，生成城市方格，在一隅之间，反映某一时刻该城市的地铁缩影。这样充满活力、色彩丰富的地铁方格是我们张望全球发展的一只眼睛，当你把目光投射到任意一个时间，我们既可以看到某一城市地铁线路的变化，也可以看到全球的整体情况，从数据中获得洞察。我们主要使用视频来讲述全球地铁的故事，但如果你想探索更多与你相关的地铁故事，我们也发布了一个网站（https://sleepydui.github.io/global_metro/#/），允许用户通过交互式操作自由探索数据。

感谢观看（｡ò ∀ ó｡）