一、引言在病虫历史资料比较及病虫发生消长动态分析中,图形以其直观的表达深受人们欢迎。可用于处理病虫测报日常应用及科研工作的绘图软件尚不多,一般来说,通用的交互作图软件只能在屏幕上实现简单的图形绘制,打印和存盘,这些作图方法只适用于画相对简单的几何图形,但在病虫测报数据管理、统计分析中,要求作图软件除应具有以上简单的图形功能(画点、圆、矩形、圆和椭圆)外,还应当有高级绘图功能,如在屏 I. INTRODUCTION In the dynamic analysis of historical data of pests and diseases and the growth and decline of pests, the graphic is welcomed by people in its intuitive expression. Generally speaking, the common interactive drawing software can only realize simple graphic drawing, printing and saving on the screen. These drawing methods are only applicable to Draw relatively simple geometry, but in pest forecasting data management and statistical analysis, it is required that the drawing software should have the above simple graphic functions (painting dots, circles, rectangles, circles and ellipses) Function, such as in the screen