摘  要：简述了电磁场数值计算后处理的意义；研究了磁力线、彩色云图、矢量图的绘制算法，并以VC++6.0作为开发平台，在现有有限元前处理和计算的软件的基础上开发了电磁场数值计算的后处理软件，包括磁力线、云图、矢量图的绘制；最后结合具体实例，说明本软件的正确性和有效性。
关键词：电磁场；有限元法；后处理；可视化；等位线；彩色云图；矢量图

Abstract: Brief introduced the post-processiag for electromagnetic field numerical calculation.Strdied the magnetic lines,color image,vector drauing algorthun.Based on existing fiuite element pre-treatment and calculation software,developed the post-processing software of electromagetic field numerical calculation,induding magnetic lines,color image and vector drawing.Specific examples to illustrate the correctness and effectiveness of the software.
Key Words: Electromagnetic field;FEM;Post-processing;Visualization;Equipotential line;Color image;Vector drawing