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Study on the Arithmetic of Automatically Drawing Isoline of Groundwater Level Based on GIS

CHI Bao-ming, LI Zhi-jun, YE Yong, LIN Lan, SHI Feng-zhi   

  1. College of Environment and Resources, Jilin University, Changchun 130026, China
  • Received:2006-06-08 Revised:1900-01-01 Online:2007-03-26 Published:2007-03-26
  • Contact: CHI Bao-ming

Abstract: The authors carried through the secondary development of GIS by utilizing VB and MapObject control. During the development, interpolation, tracing of iso-points and smoothing isolines were adopted. The program building isolines of hydraulic head automatically was developed. By inputting Shp file this program can be used to build isolines. At the same time isoline data can be outputted and read by some GIS software which regard Shp file as one of input data format. This program has been applied effectively to Songliao Basin groundwater manag ement information system.

Key words: isoline, Delaunay triangulation, MapObject, Bezier curve, GIS, groundwater

CLC Number: 

  • P6411
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