Volume 36 Issue 7
Jul.  2011
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TANG Yuanbin, ZHANG Feng, LIU Renyi, LIU Nan. An Adjustment Method to Maintain the Attributes Logical Consistency of Linear Features Basic Unit[J]. Geomatics and Information Science of Wuhan University, 2011, 36(7): 853-856.
Citation: TANG Yuanbin, ZHANG Feng, LIU Renyi, LIU Nan. An Adjustment Method to Maintain the Attributes Logical Consistency of Linear Features Basic Unit[J]. Geomatics and Information Science of Wuhan University, 2011, 36(7): 853-856.
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An Adjustment Method to Maintain the Attributes Logical Consistency of Linear Features Basic Unit

  • 1 Zhejiang Provincial Key Lab of GIS,Zhejiang University,34 Tianmu Road,Hangzhou 310028,China;2 Department of Geographic Information Science,Zhejiang University,34 Tianmu Road,Hangzhou 310028,China

Funds: 国家863计划资助项目(2009AA12Z222,2007AA12Z182)；浙江省科技攻关计划资助项目(2009C33011)；国家教育部博士点专项基金资助项目(200803350017)；浙江省自然科学基金资助项目(Y5090130)
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  • Received Date: April 27, 2011
  • Published Date: July 04, 2011
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    • Abstract
  • The basic unit is the smallest change object of elements in land survey database updating.It was obtained from the overlap of features in two different periods,which reflect the change from one time to another.After the rounding operation,the length of linear features in the basic unit is not equal to the sum or difference of before and after lengths.It leads to logical inconsistency,which should be adjusted.Analyzed the basic adjustment criteria and methods of linear features in the basic unit,refined the change behaviors to 10 types and clarified the data flow of each change type,an adjustment method can maintain the attributes logical consistency of linear features strictly was designed and implemented.The methods was applied and verified in the land-use data management system LandEx.
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