在绘制地震剖面时,经常会遇到当地震数据量很大时,无法在屏幕上一屏就显示出整条测线的地震剖面。针对这一问题本文提出了利用虚拟屏幕的方法来绘制地震剖面,即在常规內存中申请一段内存,对其进行一定的操作,绘制出相应的图形。本文还提出了采用滑窗技术来浏览整条地震剖面及在打印机输出的方法。该方法不仅适用于绘制地震剖面,还适用于绘制大的图形。 When drawing a seismic section, it is often encountered that when the amount of seismic data is large, the seismic profile of the entire survey line can not be displayed on the screen. In response to this problem this paper proposes the use of the virtual screen method to draw the seismic section, that is, in the conventional memory for a period of memory, to carry out certain operations, draw the corresponding graphics. This paper also presents a method of using sliding window technology to browse the entire seismic profile and output at the printer. This method is not only suitable for drawing seismic sections, but also for drawing large figures.