VGI prototype for slum data collection
Author
Gandino, Monica Patricia
Term
4. term
Publication year
2018
Submitted on
2018-08-15
Pages
66
Abstract
Mapping densely populated informal settlements is challenging, and information gaps can delay decisions. This thesis develops a Volunteered Geographic Information (VGI) prototype for slum data collection, informed by Participatory GIS (PGIS) and community mapping. Using Petare in Caracas, Venezuela, as a case study, the work includes a review of VGI/PGIS for slum upgrading, the design and implementation of a web application with map, database, and server- and client-side components that enable residents to report local conditions, and a survey with a partner community organization to assess map use, priority issues (e.g., security, waste, green areas, lighting, urban furniture), the ability to locate them on a map, and willingness to contribute anonymously. A comparison with platforms such as Wikimapia highlights data gaps, including missing categories relevant to everyday problems (e.g., waste). Initial results indicate interest in a platform to visualize community issues, perceived usefulness of thematic maps, and the feasibility of collecting place-based reports from residents. The prototype and workflow are presented with discussion and directions for future development, underscoring the potential of VGI to support evidence-informed action in data-scarce urban settings.
Kortlægning af tætbefolkede, uformelle bosættelser er vanskelig, og manglende information kan forsinke beslutninger. Dette speciale udvikler en prototype for Frivillige Geografiske Oplysninger (VGI) til indsamling af slumdata, inspireret af Deltagende GIS (PGIS) og community mapping. Med Petare i Caracas, Venezuela, som casestudie omfatter arbejdet en gennemgang af VGI/PGIS i relation til slumopgradering, design og implementering af en webapplikation med kort, database samt server- og klientside, der lader beboere indberette lokale forhold, samt en spørgeundersøgelse i en lokal organisation om kortbrug, prioriterede problemstillinger (fx sikkerhed, affald, grønne områder, belysning, byinventar), evnen til at stedfæste dem og viljen til anonym deltagelse. En sammenligning med platforme som Wikimapia peger på datamangler, herunder fravær af relevante kategorier (fx affald). De indledende resultater tyder på interesse for en platform, der visualiserer lokale udfordringer, oplevet nytte af tematiske kort og mulighed for at indsamle stedbaserede indberetninger fra beboere. Prototypen og arbejdsgangen præsenteres sammen med diskussion og forslag til videreudvikling og fremhæver VGI’s potentiale til at understøtte vidensbaserede tiltag i datafattige byområder.
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