Study on calculating the optimal grid size of GIS grid intersection(GIS网格化求交最佳网格尺寸研究)
网格化求交是GIS中海量矢量数据求交的常用方法,网格尺寸的确定是直接影响其效率的关键步骤.针对网格尺寸的确定问题,对网格化求交的耗时和矢量数据的线段长度分布(线段平均x、y方向长度,线段最大x、y方向长度等)、线段密度进行了相关分析,在此基础上确定了最佳网格尺寸的主要影响因素:线段平均x、y方向长度和线段密度.通过大量实际GIS矢量数据的求交实验,给出了最佳网格尺寸的计算方法,并得到了成功应用....
Main Authors: | YEShi-ping(叶时平), CHENHua-feng(陈华锋), HUANGZhi-cai(黄智才), ZHANGXiao-can(章孝灿) |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2008-09-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2008.05.024 |
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