Relationship of uncertainty between polygon segment and line segment for spatial data in GIS

Chun Liu, Wen Zhong Shi, Dajie Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


The mathematic theories for uncertainty model of line segment are summed up to achieve a general conception, and the line error band model εσ is a basic uncertainty model that can depict the line accuracy and quality efficiently while the model of εm and error entropy can be regarded as the supplement of it. The statistical characteristic of the line error is developed deeply by analyzing the probability that the line error falls inside a certain range. Moreover, the theory accordance is achieved in selecting the error buffer for line feature and the error indicator. The relationship between the accuracy of area for a polygon and the error loop for a polygon boundary is deduced and computed.
Original languageChinese (Simplified)
Pages (from-to)65-68
Number of pages4
JournalGeomatics and Information Science of Wuhan University
Issue number1
Publication statusPublished - 1 Jan 2005


  • ε-error band
  • Polygon unit
  • Spatial data
  • Uncertainty

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Earth-Surface Processes

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