Abstract: In aerospace test field, the representation of test data in curve format is always indispensable,
which can reflect the change or conditions in test system. In view of the massive data processing in
curve plotting, reading method is adopted, which can satisfy with the processing of the massive data
over 4GB. When the amount of data is large, the general curve plotting methods may bring about the
low implementation efficiency or the flicker problem in the display area. The plotting program is
optimized by the API function "Polyline" in MFC, and the program′s execution efficiency is improved
greatly. The double-buffering method is applied to clear the flicker in the plotting area when the curve is
displayed, and the plotting time is further shortened.

Key words: aerospace test, massive data, curve plotting, MFC, "Polyline", function, double-buffering
method