A Study on Social Mapping and Urban Structural Changes in Tokyo in the Modern Era

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K01161
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 04010:Geography-related
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Nakayama Daichi 東京都立大学, 都市環境科学研究科, 助教 (90336511)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 近代期東京 / ジオコーディングシステム / 社会地図 / OD交通流動

Outline of Final Research Achievements

Using the "Geocoding System for Modern Tokyo" and other tools, we estimated the OD traffic volume of passenger cars, bicycles, and handcarts in 1925 based on the historical traffic volume survey conducted in the former Tokyo City.
As a result, it was found that most of the passenger car traffic originated and terminated at terminal stations such as Tokyo Station and Ueno Station. Traffic coming from the Shinjuku and Shibuya areas was absorbed in the upscale residential areas and government office districts along the main roads. Bicycle traffic was mostly seen to originate and terminate around heavily used stations such as Ueno and Mansebashi. For handcarts, most of the traffic originated and terminated at railroad stations such as Akihabara and Iidamachi, where goods were delivered.

Free Research Field

地理情報科学

Academic Significance and Societal Importance of the Research Achievements

公開されているデジタルデータが極めて少ない近代東京を対象に，印刷された旧版地形図をデジタイズしてジオコーディングシステムを構築した．また，このシステムを中心にして1925年当時の東京市における交通流動について，吸収マルコフ連鎖モデルや遺伝的アルゴリズムなどの交通流動シミュレーションならびに最適化手法を用いて解明しており，この点は学術的意義が大きいと考えられる．また，ジオコーディングシステム自体を公開しており，誰でも簡便に使えるように提供している点は社会的意義が大きい．