The Application Of Simple Coding Method In The National Surveying And Mapping Vocational Skill Competition

At present,the mapping method of 1: 500 large-scale digital topographic maps mainly includes the electronic tablet method,sketching method and encoding method.However,each method has some limitations and deficiencies,especially in the field of domestic industry efficiency is always difficult In order to make up for these limitations and inefficiency,a method of simple coding from 1 digit to 2 digit was developed.In the field,the rapid coding of the code in the mapping process was developed.The industry developed the conversion software on the drawing software platform,In the data check after the redefinition of the software within the short code table,so that the simple code and the full compilation of objects in contrast to the point in the development process of the map,to achieve automatic mapping of independent symbols and geographical features The connection between symbols,through human-computer interaction editing,graphic finishing,generating the final topographic map,and through conversion software to generate a series of results form.This thesis has three main work and conclusion:1? From the existing equipment and software conditions,a simple coding method is proposed innovatively,and simple numbers are used as codes to downplay the traditional one-to-one relationship between coding and features in the mapping.,Thus greatly improving the speed and accuracy of field acquisition,and cooperating with the conversion software developed to achieve the output of auxiliary maps and tables in the field of homework,and improving the efficiency of internal charting while achieving multi-achievement output.2?Through the sketch map method,the coding method and the simple coding method,the method of field mapping is used to conduct the experiment.The efficiency of the field acquisition and the efficiency of the mapping are compared.The comparative analysis of the experimental data shows the advantage of the simple coding method.3?Through the practical application in the National Surveying and Mapping Vocational Skill Competition,combined with the comparative analysis of the field data collection,factor integrity and topographic map compilation of the actual operation of the 32 teams in the country,the simple coding method In the field of acquisition and internal work on the drawing have obvious advantages.