The Contour Drawing Automatically Based on PDA Environment

This paper is focused on contour drawing based on PDAs automatically. We use the advantages of various techniques to improve the contour drawing and analysis of the accuracy and efficiency, thus becomes the pursuit of the goal of researchers. The advantage of this article is to integrate of these technologies and algorithms, which is based on the PDA environment and MapX Mobile component technology to complete the automatic drawing of the contour, and something useful is obtained.