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本文在分析伐区调查设计中绘图、求积的数据结构和坐标变换的基础上,确定了伐区领域信息的检索模式,并提出一套使用计算机一绘图机绘制伐区平面图、交互式图形、求算伐区总面积、采伐小号面积及集材道长度的算法,可编制相应的应用软件,在IBM-PC/XT微机及SR 6602绘图机上实现。该方法不仅可用于林业局的伐区调查设计,使绘图与求积等工作计算机自动化,还可解决其它土地利用工作方面的类似问题。
Based on the analysis of the data structure and coordinate transformation of drawing and quadrature in the survey design of cutting area, this paper determined the retrieval mode of cutting area information, and put forward a set of methods of using computer-drawing machine to draw cutting plan, interactive graphics, Calculate the total area of cutting area, logging trumpet area and the length of the channel algorithm can be prepared corresponding application software, IBM-PC / XT microcomputer and SR 6602 plotter to achieve. This method not only can be used for the forestry bureau cutting survey design, make the computer such as drawing and quadrature work automation, but also can solve the similar problems in other land use work.