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題名 | 地理資訊系統中地理資料庫輸入技術之研討 |
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作者姓名(中文) | 蘇明道; | 書刊名 | 農業工程學報 |
卷期 | 39:4 1993.12[民82.12] |
頁次 | 頁31-37 |
分類號 | 440.98 |
關鍵詞 | 地理資訊系統; 數化; 地圖; GIS; Digitizing; Map; |
語文 | 中文(Chinese) |
中文摘要 | 水資源系統之規劃、設計及管理往往牽涉大量具有空間及時間分佈特性之資料,傳統上是以地圖來處理這類資炓,但是地圖之管理與保存不易,各種比例的地圖在運用上也會產生相當多的困擾。近年來由於電腦軟硬體的快速發展,地理資訊系統不論在軟硬體價格及功能上均已接近可被應用者接受的程度,我國亦在內政部主導之下開始發展國土資訊系統,在國內政府及學術單位通力合作之下,希望在不久的將來即可有可供使用的地理資訊系統,可以應用在土木水利工程的規劃設計之上。但是地理資訊系統之建立過程中,一項相當繁雜的工作即在於基本地理資料庫之輸入,地理資料庫分為數字性及圖形兩類,文數字性之資料輸入問題不大,但地圖部份的數化輸入則往往需要耗費大量的人力及財力,目前雖然有數種可供選擇的數化方式,但各有其優缺點及適用的範圍,如果選擇不當,常會產生事倍功半的結果。本文就目前較常見的三種地圖數化方式加以介紹並比較其優缺點,以供作日後各種應用狀況選用數化方法之參考。文中並對目前PC作業環境所能使用之軟硬體資源做研討,以現成之繪圖軟體及簡單之硬體設備(滑鼠及掃描器),對地圖之數化過程作一介紹,供作相關應用之參考。 |
英文摘要 | There is a lot of spatially and temporally distributed information involved in planning, design and management of water resources systems or regional development. Maps are traditionally used to handle these kind of information. The paper maps are not easy in storage and management. Maps with different scales will cause difficulties in mapping process. The Geographic Information Systems (GIS) become more and more popular now because the power of software are stronger, and the price of hardware is relatively lower. In the implementation of a GIS application, the most costly aspect is the digitizing of maps. It needs more careful evaluations in the choice of data capture method in the map digitizing process. This paper evaluates three data capture methods widely used in GIS implementations: tabletop digitizing, line following, and heads-up digitizing. A brief discussions and also the advantages and disadvantages of each method for different types of source data and applications is also presented. A small example is also included to show how to use commercial software in PC environment for a quick digitizing of map. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。