Contour Automatically Integrated Technology Research And Software Development

With the application of GIS in the areas of the continuous deepening of, the existing GIS data-processing technology has been unable to meet the information age and the digital space needs of the information society,one important aspect is the spatial data can not be solved with the change in the scale of change in the amount of information issues,the solution of the problem lies in fundamental way to achieve comprehensive map of automation.Therefore, Map is no longer just a single integrated solution map as a means of production automation,and a national spatial data infrastructure and an important foundation for Digital Earth Technology Support.Topography map is automatically integrated comprehensive study of the more traditional one of,it is also integrated with high difficulty of the issue, with contours of the most comprehensive study challenging.Line generalization,one of the most important fields of the cartographic generalization,is still a central issue for experts and scholars after many years' development.That has two reasons:one is the importance of line in map representation,the other is the imperfectability and immaturity of the theory of cartographic generalization and line generalization itself.In addition,as a main partition of spatial information representation,analysis and deal of line play an important role in GIS.With the expansion of GIS applying field and development of internet technique,now available data processing system of GIS couldn't meet the requirements of the information society.One of the important reasons is that GIS couldn't adjust the quantity of spatial information with deriving small scale from large scale automatically,which is also called spatial information compression and reappearance of scales GIS.Consequently,it's essential to pay attentions to the research in line simplification more than in line generalization.This paper is in MapObjects platform on the contour automatically integrated.Based on the Comprehensive Review of automatic map and MapObjects development on the basis of discussion of the contours comprehensive strategy, and design and development platform to MapObjects contour automatically integrated system.The system uses a tool provided by the MapObjects,C# environment in the development of applications,C# environment in the development of applications.Such research,Development Methods,solve the good contour comprehensive practical problems encountered in the course of. Finally the contour lines developed integrated interactive system MapObjects, To achieve the following main aspects of the functions:1.The contour of the basic algorithm automatically integrated conducted a comprehensive in-depth study,focus on the Douglas - Puke (Douglas-Peucker)Act.2.Declination restrictions on the strategy of Douglas-Peucker algorithm perfect,to avoid the contours of the process automatically integrated graphics distortion.3.Contour topographical features on the set point and topographical feature of the search,and the contour lines on the basis of the structure of the tree under the Comprehensive control factor to track terrain characteristics.4.Layers of contour lines to join.Users need to join the integrated graphics contour.5.Contour data preprocessing.The original contour data preprocessing, for example,to delete the wrong elevation,Settings such as distance.Because of various reasons,In this paper,only to achieve the contour from the set.6.Implementation of the contours of the SR Group,and to achieve a platform based on MapObjeets contour data for the downsizing of the dilution method.