基于VC++2008的大容量数据曲线绘制方法  

Curve plotting method for large-capacity data based on VC++ 2008

作　　者：马志刚[1,2] 刘文怡[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,电子测试技术重点实验室,太原030051 [2]山西农业大学信息科学与工程学院,山西太谷030801

出　　处：《中国科学院大学学报（中英文）》2015年第1期116-120,共5页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(51275491)资助

摘　　要：针对大容量数据曲线绘制中的数据提取问题,提出"逐块读取"→"拼接数据"→"提取数据",最后达到"完整提取"的方式,可以实现对超过4 GB数据文件的处理.当数据量较大时,常规的绘图方法会暴露出效率低、绘图区域闪烁的问题.利用Polyline函数优化绘图程序,提高了绘图效率;采用双缓冲法解决绘图区域闪烁的问题,并进一步缩短了绘图时间.In view of the data extraction problems in large-capacity data curve plotting, the ＂ data reading by-block＂ → ＂data join＂ → ＂ data extraction＂ → achieving finally ＂ full extraction＂ process is proposed, which can achieve the processing of the large-capacity data file over 4 GB. When the data quantity is large, conventional curve plotting methods may give rise to the low efficiency or the flicker problem in the plotting area. The ＂ Polyline＂ function is employed to optimize the plotting program, and greatly improves the plotting efficiency. The dual-buffering method is adopted to eliminate the flicker in plotting area, and thus further shortens the drawing time.

关 键 词：大容量数据 曲线绘制 VC++2008 POLYLINE 双缓冲 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]