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|Other Titles: ||A Study on Data Conversion for Digital Mapping|
Protection forest;Geographic information system;GIS;Digital cartographic data;Digital mapping
|Issue Date: ||2014-09-12 16:15:22 (UTC+8)|
|Abstract: ||地理資料庫內資料種類甚多，資料格式、座標系統、資料品質、資料生產目的不盡相同，對同一地理資料項目之定義或有差異。為達成資料整合與共享目標，資料格式轉換乃重要課題。本文以臺北市區外保安林為例，將不同來源、不同尺度保安林基本圖、地籍圖、地形圖、控制點圖、行政區界圖、檢訂成果圖、表簿資料等，經資料格式轉換後，供整合建置保安林地理資訊查詢系統，支援保安林經營管理空間決策。 其中，就地籍圖圖資格式轉換而言，以Microstation軟體轉換地籍圖檔，無法直接轉換保安林宗地屬性資料，耗時費力；以ARC/INFO軟體進行地籍資料檔轉換，則較容易將地籍圖地號段號及土地權屬等屬性鏈結，可兼顧空間性圖資與屬性資料，屬較較處理方式。地形圖圖資格式轉換方面，原有地形圖圖徵之屬性及相依性未被完整考慮，限制其GIS之應用價值，或於圖層建檔時未依照所制定的圖層表存放，增加資料轉換及修圖工作的繁複度。此等問題本研究均已設法解法。|
Geographic database usually consists of various types of data that have different data format, coordinate system, data quality, and objectives for data production. For some geographic data items, the definition may not be the same. For data integration and data sharing, conversion of data having different format is an important issue. In this study, the protection forest base maps, parcel maps, topographic maps, control points maps, administrative boundary maps, forest inventory maps, and related tabular data were integrated to establish a geographic information system for the protection forests in Taipei City. Data conversion was performed on these data, and valuable spatial information may be provided by the system to facilitate protection forest management and decision making. For converting the parcel maps, the attribute data of the parcels can not be retrieved directly by using the Microstation software such that more time were needed to process the data. In comparison, using the ARC/INFO software to convert the parcel maps can provide spatial information as well as attribute data, therefore is a more efficient manner. For topographic mps conversion, due to the attributes of the topographic features and their spatial relationships were not properly described in the original maps, usage of these maps are limited to data display for GIS applications. In addition, some data layers were misplaced within the topographic maps, which caused more works for data conversion and editing. The aforementioned problems were all resolved in this study.
|Relation: ||臺大實驗林研究報告, Vol.14, No.1, pp.21-28.|
|Data Type: ||article|
|Appears in Collections:||[地政學系] 期刊論文|
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