测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2014年
4期
40-42
,共3页
扣除算法%空间关系%缓冲区%线状地物
釦除算法%空間關繫%緩遲區%線狀地物
구제산법%공간관계%완충구%선상지물
area subtraction algorithm%spatial relationships%buffer%linear-object
线状地物调查是土地资源调查中的一项重要内容。在分类统计汇总土地面积时,计算、扣除线状地物面积时显得尤为重要。本文在分析线状地物与地类图斑空间关系的基础上,设计了线状地物面积快速扣除算法。利用SuperMap Objects作为开发平台,VC++6.0为开发工具实现了该算法。经验证,该算法能够快速实现线状地物面积扣除,可达到相关建库工作的精度要求。
線狀地物調查是土地資源調查中的一項重要內容。在分類統計彙總土地麵積時,計算、釦除線狀地物麵積時顯得尤為重要。本文在分析線狀地物與地類圖斑空間關繫的基礎上,設計瞭線狀地物麵積快速釦除算法。利用SuperMap Objects作為開髮平檯,VC++6.0為開髮工具實現瞭該算法。經驗證,該算法能夠快速實現線狀地物麵積釦除,可達到相關建庫工作的精度要求。
선상지물조사시토지자원조사중적일항중요내용。재분류통계회총토지면적시,계산、구제선상지물면적시현득우위중요。본문재분석선상지물여지류도반공간관계적기출상,설계료선상지물면적쾌속구제산법。이용SuperMap Objects작위개발평태,VC++6.0위개발공구실현료해산법。경험증,해산법능구쾌속실현선상지물면적구제,가체도상관건고공작적정도요구。
The investigation of linear features is an important element of the land resources survey .Calculation and subtraction of line-ar features area are particularly important in the classification statistics of the land area .On the basis of analyzing the spatial relation-ship of linear features with Polygons , we design fast area subtraction algorithm of the linear features .Applying SuperMap Objects as a development platform, VC ++6.0 as the development tools, the algorithm is realized.The algorithm can quickly achieve the linear features area subtraction and the requirements of building the database of land use .