Curve plotting method for large-capacity data based on VC++ 2008
MA Zhi-gan · 2015
In view of the data 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.