Journal of University of Chinese Academy of Sciences >
Curve plotting method for large-capacity data based on VC++ 2008
Received date: 2014-03-19
Revised date: 2014-04-25
Online published: 2015-01-15
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.
Key words： large-capacity data; curve plotting; VC++ 2008; Polyline; dual-buffering
MA Zhigang , LIU Wenyi . Curve plotting method for large-capacity data based on VC++ 2008[J]. Journal of University of Chinese Academy of Sciences, 2015 , 32(1) : 116 -120 . DOI: 10.7523/j.issn.2095-6134.2015.01.019
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