利用漸進式網頁應用程式技術建置開放地理空間資料檢視器

Abstract

在政府推動推動資料開放的政策下，各種公開的電子資料其中也包含地理空間資料，如KML、Shapefile、GeoJson...等，但地理空間資料的瀏覽在一般民眾中難以像圖片、PDF、Office檔案一樣簡單的瀏覽，需安裝特定的軟體如QGIS來檢視，對這些一般民眾來說是複雜難以使用的。本研究使用漸進式網頁應用程式技術來建置免安裝、簡單易用的地理空間資料檢視器，提供使用者瀏覽檢視常見的地理空間資料檔案，如：KML、GeoJson、Shapefile，使用體驗能像檢視PDF、圖片般的一樣簡單，不會像傳統GIS軟體一樣有提供豐富但讓使用者不知所措的功能，大幅降低了瀏覽檢視地理空間資料檔案的操作門檻。資料提供者也毋須花費大量時間經費建置圖台就只為了呈現提供的地理空間資料，資料提供者只要專注於提供地理空間資料檔案，並告知使用者可使用，如同發布PDF檔案但毋須建置PDF檢視平台一樣，可降低資料提供者的成本，毋須建置維護一套圖台系統。本研究建置的命名為簡易地理資料檢視器，其能夠大幅降低了瀏覽檢視地理空間資料檔案的操作門檻，降低資料提供者的成本，藉以促進地理空間資料的開放與流通。Under the government's policy to promote data openness, various types of publicly available electronic data also include geospatial information such as KML, Shapefile, GeoJson, and more. However, the browsing of geospatial data is not as straightforward for the general public as viewing images, PDFs, or Office files. It requires the installation of specific software like QGIS to view, which can be complex and challenging for these individuals. This study utilizes progressive web application technology to create aninstallation-free and user-friendly geospatial data viewer. It offers users the ability to easily browse and view common geospatial data files, such as KML, GeoJson, and Shapefile. The user experience is made as simple as viewing PDFs or images, without overwhelming users with the extensive features that traditional GIS software offers. This significantly lowers the barriers to accessing and viewing geospatial data files.Data providers also no longer need to invest significant time and resources into setting up mapping platforms solely for presenting geospatial data. Instead, they can focus on providing the geospatial data files and informing users about their availability. Similar to publishing PDF files without the need for a PDF viewing platform, this approach reduces the costs for data providers and eliminates the necessity to establish and maintain an entire mapping system.The solution developed in this study is named the"Simple GeoData Viewer." It drastically reduces the hurdles associated with browsing and viewing geospatial data files and concurrently minimizes costs for data providers. This endeavor aims to facilitate the openness and dissemination of geospatial data.